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Ligi S, Ali A, Yang G. Cystathionine gamma-lyase deficiency exaggerates diethylnitrosamine-induced liver damage in mice. Nitric Oxide 2024; 151:1-9. [PMID: 39151724 DOI: 10.1016/j.niox.2024.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Revised: 08/09/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Cystathionine gamma-lyase (CSE) is a key enzyme in reverse transsulfuration pathway and contributes to the majority of H2S generation in liver tissues via cysteine metabolism. Dysfunction of the CSE/H2S system is linked to both chronic and acute liver damage. This study investigated the regulatory role of CSE deficiency on diethylnitrosamine (DEN)-induced liver damage in mice. A single injection of DEN was administered into 4-week-old male CSE knockout (CSE-KO) mice and wild-type (WT) littermates, and the mice were sacrificed at 28 weeks of age. Compared to age-matched WT mice, CSE-KO mice spontaneously developed steatosis with increased oxidative stress and higher expressions of inflammation and fibrosis-related genes at 28-weeks of age. Following DEN injection, CSE-KO mice experienced more severe liver damage in comparison with the WT group as reflected by elevated levels of lipid accumulation, increased activities of alanine aminotransferase and aspartate aminotransferase, higher oxidative stress and fibrosis development, and increased expressions of inflammation and fibrosis-related genes. No visible tumors were observed in both types of mice with DEN treatment. In addition, the expression levels of the three H2S-generating proteins (CSE, cystathionine beta-synthase, and 3-mercaptopyruvate sulfurtransferase) and the H2S production rate in liver tissues were unaffected by DEN. Taken together, our study demonstrates that CSE provides a significant hepatoprotective effect and deficiency of CSE exaggerates DEN-induced liver damage in mice. Based on these findings, it can be suggested that targeting the CSE/H2S signaling pathway could be a potential therapeutic target for the treatment of liver diseases.
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Affiliation(s)
- Samantha Ligi
- School of Natural Sciences, Laurentian University, Sudbury, Canada; Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
| | - Arm Ali
- School of Natural Sciences, Laurentian University, Sudbury, Canada; Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada
| | - Guangdong Yang
- School of Natural Sciences, Laurentian University, Sudbury, Canada; Cardiovascular and Metabolic Research Unit, Laurentian University, Sudbury, Canada.
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2
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Hua X, Ge S, Zhang L, Jiang Q, Chen J, Xiao H, Liang C. MED15 is upregulated by HIF-2α and promotes proliferation and metastasis in clear cell renal cell carcinoma via activation of SREBP-dependent fatty acid synthesis. Cell Death Discov 2024; 10:188. [PMID: 38649345 PMCID: PMC11035615 DOI: 10.1038/s41420-024-01944-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
Emerging evidence has highlighted that dysregulation of lipid metabolism in clear cell renal cell carcinoma (ccRCC) is associated with tumor development and progression. HIF-2α plays an oncogenic role in ccRCC and is involved in abnormal lipid accumulation. However, the underlying mechanisms between these two phenomena remain unknown. Here, MED15 was demonstrated to be a dominant factor for HIF-2α-dependent lipid accumulation and tumor progression. HIF-2α promoted MED15 transcriptional activation by directly binding the MED15 promoter region, and MED15 overexpression significantly alleviated the lipid deposition inhibition and malignant tumor behavior phenotypes induced by HIF-2α knockdown. MED15 was upregulated in ccRCC and predicted poor prognosis. MED15 promoted lipid deposition and tumor progression in ccRCC. Mechanistic investigations demonstrated that MED15 acts as SREBP coactivator directly interacting with SREBPs to promote SREBP-dependent lipid biosynthesis enzyme expression, and promotes SREBP1 and SREBP2 activation through the PLK1/AKT axis. Overall, we describe a molecular regulatory network that links MED15 to lipid metabolism induced by the SREBP pathway and the classic HIF-2α pathway in ccRCC. Efforts to target MED15 or inhibit MED15 binding to SREBPs as a novel therapeutic strategy for ccRCC may be warranted.
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Affiliation(s)
- Xiaoliang Hua
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Shengdong Ge
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Qing Jiang
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Juan Chen
- Department of Urology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
- The Ministry of Education Key Laboratory of Laboratory Medical Diagnostics, the College of Laboratory Medicine, Chongqing Medical University, 400016, Chongqing, China.
| | - Haibing Xiao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, China.
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3
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Rajput PK, Varghese JF, Srivastava AK, Kumar U, Yadav UCS. Visfatin-induced upregulation of lipogenesis via EGFR/AKT/GSK3β pathway promotes breast cancer cell growth. Cell Signal 2023; 107:110686. [PMID: 37084841 DOI: 10.1016/j.cellsig.2023.110686] [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: 11/12/2022] [Revised: 03/27/2023] [Accepted: 04/17/2023] [Indexed: 04/23/2023]
Abstract
Breast cancer (BC) incidence and associated mortality have increased in tandem with the growth in obesity among the females worldwide. An adipokine, visfatin, has been shown to potentially impact glucose, lipid, and protein metabolism, and promote cancer growth however, the mechanism underlying the effect of visfatin on lipid metabolism dysregulation contributing to BC cell survival, proliferation, and metastasis has not been elucidated. Herein, we have investigated the role of visfatin on the induction of Sterol regulatory element binding protein (SREBP-1) and its upstream and downstream mediators in MCF-7 breast cancer cells. The survival and proliferation was investigated using MTT and Trypan blue assays, cytosolic lipid accumulation was observed using Nile red staining, mRNA and protein expressions were examined using RT-qPCR and western blotting, respectively, and cell cycle analysis was performed using fluorescence-activated cell sorting. Our results indicate that visfatin increased the survival and proliferation of MCF-7 cells in a time- and dose-dependent manner and augmented lipid buildup via activation of SREBP-1 and its associated downstream lipid synthesizing enzymes, at both mRNA and protein levels in MCF-7 cells. Inhibiting SREBP-1 using fatostatin or silencing with siRNA abrogated excessive lipid deposition by suppressing the expression of genes related to lipid synthesis pathway. Further, in-silico study showed high affinity binding of visfatin with epidermal growth factor receptor (EGFR), which was confirmed in an in-vitro study where visfatin increased the phosphorylation of EGFR at tyrosine residue and activated its downstream proteins via phosphorylation of AKT and GSK3β in MCF-7 cells. Inhibition of GSK3β by phosphorylation led to increased activity of SREBP-1 and associated downstream proteins. In summary, SREBP-1 may be a critical player in visfatin-induced lipid synthesis and accumulation in BC cells via activation of EGFR/AKT/GSK3β pathway leading to increased cell survival and proliferation of BC cells.
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Affiliation(s)
- Pradeep Kumar Rajput
- Metabolic Disorders and Inflammatory Pathologies Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Johnna Francis Varghese
- Metabolic Disorders and Inflammatory Pathologies Laboratory, School of Life Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India; Ann Romney Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States of America
| | - Amit Kumar Srivastava
- School of Nano Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Umesh Kumar
- School of Nano Sciences, Central University of Gujarat, Gandhinagar 382030, Gujarat, India
| | - Umesh C S Yadav
- Special Centre for Molecular Medicine and Special Centre for Systems Medicine (Concurrent Faculty), Jawaharlal Nehru University, New Delhi 110067, India.
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4
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Chen TC, Huang CW, Lo CY, Chen CN, Chang SF, Chen YY. Suppression of SREBP-1 Expression by Simvastatin Decreases Visfatin-Induced Chemoresistance to Sunitinib in Human Renal Carcinoma 786-O Cells. LIFE (BASEL, SWITZERLAND) 2022; 12:life12111890. [PMID: 36431025 PMCID: PMC9695258 DOI: 10.3390/life12111890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 11/05/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022]
Abstract
The resistance of renal cell carcinoma (RCC) to sunitinib impedes the success of chemotherapy in cancer treatment. Although several sunitinib resistance mechanisms have been proposed, little is known concerning the impact of obesity and adipokines in RCC cells. The upregulation of sterol-regulatory element-binding protein-1 (SREBP-1) has been reported to modulate the progression of tumor cells. The present study investigated the effect of visfatin on sunitinib-induced cytotoxicity in RCC cells through SREBP-1 expression. We found that visfatin-induced Akt and p70S6K activation increased SREBP-1 expression in 786-O cells. The visfatin-induced SREBP-1 mRNA and protein levels were attenuated through the inactivation of Akt and p70S6K by pharmacological inhibitors. In addition, the SREBP-1 knockdown using siRNA enhanced the cytotoxic effects of sunitinib. Our results also revealed the roles of simvastatin in attenuating the effects of visfatin on 786-O cells by inhibiting the production of reactive oxygen species. In particular, simvastatin co-treatment increased the cell cytotoxicity of sunitinib in visfatin-treated 786-O cells, which were associated with down-regulation of SREBP-1 expression. Our results suggest an important role of SREBP-1 in visfatin-induced drug resistance of RCC cells to sunitinib. The cytotoxic mechanism of simvastatin on RCC cells may provide a new strategy to improve therapeutic outcomes for the RCC treatment.
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Affiliation(s)
- Te-Chuan Chen
- School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung 804, Taiwan
- Division of Nephrology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung 833, Taiwan
| | - Chen-Wei Huang
- Department of Food Science, National Chiayi University, Chiayi 600, Taiwan
| | - Chih-Yu Lo
- Department of Food Science, National Chiayi University, Chiayi 600, Taiwan
| | - Cheng-Nan Chen
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi 600, Taiwan
| | - Shun-Fu Chang
- Department of Medical Research and Development, Chang Gung Memorial Hospital Chiayi Branch, Chiayi 613, Taiwan
| | - Yih-Yuan Chen
- Department of Biochemical Science and Technology, National Chiayi University, Chiayi 600, Taiwan
- Correspondence:
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Lu Y, He X, Fang X, Chai N, Xu F. A novel lipid metabolism-related lncRNA signature predictive of clinical prognosis in cervical cancer. Front Genet 2022; 13:1001347. [PMID: 36324514 PMCID: PMC9621320 DOI: 10.3389/fgene.2022.1001347] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 10/05/2022] [Indexed: 12/01/2022] Open
Abstract
Background: Cervical cancer (CC) is a serious threat to women populations worldwide. Lipid metabolism is believed to have modulating functions in cancer. Long non-coding RNAs (lncRNAs) are potential biomarkers for the different tumor prognosis. Our work aims at investigating the prognostic value of lipid metabolism-related lncRNAs in CC. Methods: LncRNA expression profiling was conducted in 291 patients from The Cancer Genome Atlas (TCGA). Patient samples were randomly assigned to the training or testing set in a 3:2 ratio. A novel lipid metabolism-related five-lncRNA signature with prognostic value for CC was built through the univariate Cox regression, least absolute contraction and selection operator (LASSO) regression and multivariate Cox regression analyses, and was further evaluated by the Kaplan-Meier methods. Relevant analyses were also applied to identify the independent clinicopathological factors. GO and KEGG analyses were conducted to investigate the biological functions and molecular pathways. Immune infiltration analysis was included to probe the relationship between lncRNA signature and cancer cell microenvironment. Results: The novel lipid metabolism-related five-lncRNA signature was confirmed to be predictive of overall survival (OS) in CC patients. Risk score, cancer stage, pregnancy, and BMI were validated as independent factors with prognostic value. GO and KEGG indicated that lipid metabolism participated in several tumor associated functions and pathways. Moreover, our results suggested that the five-lncRNA expression has potential link with tumor immune microenvironment. Conclusion: In conclusion, we built an innovative prognostic risk signature based upon lipid metabolism-related lncRNAs. The five-lncRNA signature may be beneficial to provide novel potential therapeutic targets and improve personalized treatment strategies for CC patients in future clinical treatments.
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Affiliation(s)
- Yanzhen Lu
- Department of Gynaecology, The People's Hospital of Beilun District, Beilun Branch Hospital of the First Affiliated Hospital of Medical School of Zhejiang University, Ningbo, China
| | - Xiujun He
- Department of Gynaecology, The People's Hospital of Beilun District, Beilun Branch Hospital of the First Affiliated Hospital of Medical School of Zhejiang University, Ningbo, China
| | - Xia Fang
- Department of Gynaecology, The People's Hospital of Beilun District, Beilun Branch Hospital of the First Affiliated Hospital of Medical School of Zhejiang University, Ningbo, China
| | - Ningxia Chai
- Department of Gynaecology, The People's Hospital of Beilun District, Beilun Branch Hospital of the First Affiliated Hospital of Medical School of Zhejiang University, Ningbo, China
| | - Fangfang Xu
- Department of Gynaecology, The People's Hospital of Beilun District, Beilun Branch Hospital of the First Affiliated Hospital of Medical School of Zhejiang University, Ningbo, China
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Zhou J, Simon JM, Liao C, Zhang C, Hu L, Zurlo G, Liu X, Fan C, Hepperla A, Jia L, Tcheuyap VT, Zhong H, Elias R, Ye J, Henne WM, Kapur P, Nijhawan D, Brugarolas J, Zhang Q. An oncogenic JMJD6-DGAT1 axis tunes the epigenetic regulation of lipid droplet formation in clear cell renal cell carcinoma. Mol Cell 2022; 82:3030-3044.e8. [PMID: 35764091 PMCID: PMC9391320 DOI: 10.1016/j.molcel.2022.06.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 03/15/2022] [Accepted: 05/31/2022] [Indexed: 11/17/2022]
Abstract
Characterized by intracellular lipid droplet accumulation, clear cell renal cell carcinoma (ccRCC) is resistant to cytotoxic chemotherapy and is a lethal disease. Through an unbiased siRNA screen of 2-oxoglutarate (2-OG)-dependent enzymes, which play a critical role in tumorigenesis, we identified Jumonji domain-containing 6 (JMJD6) as an essential gene for ccRCC tumor development. The downregulation of JMJD6 abolished ccRCC colony formation in vitro and inhibited orthotopic tumor growth in vivo. Integrated ChIP-seq and RNA-seq analyses uncovered diacylglycerol O-acyltransferase 1 (DGAT1) as a critical JMJD6 effector. Mechanistically, JMJD6 interacted with RBM39 and co-occupied DGAT1 gene promoter with H3K4me3 to induce DGAT1 expression. JMJD6 silencing reduced DGAT1, leading to decreased lipid droplet formation and tumorigenesis. The pharmacological inhibition (or depletion) of DGAT1 inhibited lipid droplet formation in vitro and ccRCC tumorigenesis in vivo. Thus, the JMJD6-DGAT1 axis represents a potential new therapeutic target for ccRCC.
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Affiliation(s)
- Jin Zhou
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jeremy M Simon
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA; Department of Genetics, Neuroscience Center, University of North Carolina, Chapel Hill, NC 27599, USA; UNC Neuroscience Center, Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Chengheng Liao
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Cheng Zhang
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Lianxin Hu
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Giada Zurlo
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Xijuan Liu
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Cheng Fan
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA
| | - Austin Hepperla
- Lineberger Comprehensive Cancer Center, University of North Carolina School of Medicine, Chapel Hill, NC 27599, USA; Department of Genetics, Neuroscience Center, University of North Carolina, Chapel Hill, NC 27599, USA; UNC Neuroscience Center, Carolina Institute for Developmental Disabilities, University of North Carolina, Chapel Hill, NC 27599, USA
| | - Liwei Jia
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Vanina Toffessi Tcheuyap
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Hua Zhong
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Lyda Hill Department of Bioinformatics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Roy Elias
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Jin Ye
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - W Mike Henne
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Payal Kapur
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Deepak Nijhawan
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - James Brugarolas
- Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
| | - Qing Zhang
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA; Kidney Cancer Program, Simmons Comprehensive Cancer Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA.
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7
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Liao Q, Xu W, Luo Q, Wen X. Zhenqing recipe relieves diabetic nephropathy through the SIK1/SREBP-1c axis in type 2 diabetic rats. Am J Transl Res 2021; 13:13776-13783. [PMID: 35035716 PMCID: PMC8748144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 10/13/2021] [Indexed: 06/14/2023]
Abstract
BACKGROUND Salt-inducible kinase 1 (SIK1) plays an important role in lipid metabolism, which inhibits lipid synthesis by directly phosphorylating multiple serine residue sites of sterol regulatory element-binding protein 1c (SREBP-1c). This study examined potential therapeutic effect of a Chinese herbal medicine Zhenqing Recipe (ZQR) and metformin on diabetic nephropathy and investigated whether the SIK1/SREBP-1c axis is involved. METHODS The rat model of type 2 diabetes was developed by high-sucrose plus high fat diet for one month combined with low-dose Streptozocin intraperitoneal injection for three days, after which the presence of hyperglycemia and hyperlipidemia was examined to validate the model. The diabetic rats were then randomly allocated to diabetic groups treated by either ZQR or metformin, and normal rats receiving normal diet were included as a control group. Metabolic parameters, renal function, and renal triglyceride were examined and compared between groups. RESULTS After a treatment of 12 weeks, ZQR and metformin significantly reduced serum glucose and triglyceride, inhibited diabetic nephropathy and improved renal function. The mRNA level of SIK1 was significantly lower in the diabetic rats than that in the control group, while the expression of SREBP-1c had an opposite pattern. However, after receiving ZQR or metformin treatment, the SIK1 level in diabetic rats increased and the SREBP-1c level was downregulated. Consistent results were observed at the protein level. CONCLUSION The data suggested that similar to metformin, ZQR could alleviate diabetic nephropathy through SIK1/SREBP-1c axis.
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Affiliation(s)
- Qiuhong Liao
- Department of Endocrinology, The Hospital of Shunyi DistrictBeijing 101300, China
| | - Wenguang Xu
- Department of Geriatrics, The General Shipping Hospital of Yangtze RiverWuhan 420102, Hubei, China
| | - Qiong Luo
- Department of Endocrinology, The General Shipping Hospital of Yangtze RiverWuhan 420102, Hubei, China
| | - Xiuying Wen
- Department of Traditional Chinese Medicine, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430077, Hubei, China
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8
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Wang TB, Geng M, Jin H, Tang AG, Sun H, Zhou LZ, Chen BH, Shen G, Sun Q. SREBP1 site 1 protease inhibitor PF-429242 suppresses renal cell carcinoma cell growth. Cell Death Dis 2021; 12:717. [PMID: 34285190 PMCID: PMC8292369 DOI: 10.1038/s41419-021-03999-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 12/13/2022]
Abstract
Renal cell carcinoma (RCC) cells have increased lipogenesis and cholesterol synthesis. Sterol regulatory element-binding protein-1 (SREBP1) is cleaved by site 1 protease (S1P) to release the transcriptionally active amino-terminal domain. PF-429242 is a potent and competitive S1P inhibitor. We here tested its activity in RCC cells. In established and primary human RCC cells, PF-429242 potently inhibited cell proliferation, migration, and invasion. The S1P inhibitor provoked apoptosis activation in RCC cells. Furthermore, shRNA-mediated S1P silencing or CRISPR/Cas9-induced S1P knockout led to RCC cell growth inhibition and apoptosis activation. Conversely, ectopic overexpression of SREBP1 or S1P augmented RCC cell proliferation and migration. Daily i.v. injection of a single dose of PF-429242 robustly inhibited RCC xenograft growth in severe combined immunodeficiency mice. Additionally, intratumoral injection of S1P shRNA lentivirus inhibited RCC xenograft growth in mice. SREBP1, S1P, and its target gene low density lipoprotein receptor (LDLR) were significantly elevated in human RCC tissues. These results suggest that targeting S1P by PF-429242 inhibited RCC cell growth in vitro and in vivo.
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Affiliation(s)
- Tong-Bing Wang
- Department of Urology, People's Hospital of Yangzhong City, Yangzhong, China
| | - Mei Geng
- Department of Oncology, Rui Jin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Hua Jin
- The Child Health Care Department, Suzhou Ninth People's Hospital, Suzhou, China
| | - Ai-Guo Tang
- Department of Urology, The affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Hao Sun
- Department of Urology, The affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Liu-Zheng Zhou
- Department of Urology, The affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Bin-Hai Chen
- Department of Urology, The affiliated Hospital of Jiangsu University, Zhenjiang, China
| | - Gang Shen
- Department of Urology, DUSHU Lake Hospital Affiliated to Soochow University, Suzhou, China.
| | - Qiang Sun
- Department of Nephrology, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, China.
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9
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Shen D, Gao Y, Huang Q, Xuan Y, Yao Y, Gu L, Huang Y, Zhang Y, Li P, Fan Y, Tang L, Du S, Wu S, Wang H, Wang C, Gong H, Pang Y, Ma X, Wang B, Zhang X. E2F1 promotes proliferation and metastasis of clear cell renal cell carcinoma via activation of SREBP1-dependent fatty acid biosynthesis. Cancer Lett 2021; 514:48-62. [PMID: 34019961 DOI: 10.1016/j.canlet.2021.05.012] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/03/2021] [Accepted: 05/06/2021] [Indexed: 11/18/2022]
Abstract
Enhanced synthesis or uptake of lipids contributes to rapid cancer cell proliferation and tumor progression. In recent years, cell cycle regulators have been shown to be involved in the control of lipid synthesis, in addition to their classical function of controlling the cell cycle. Clear cell renal cell carcinoma (ccRCC) is the most common subtype of kidney cancer and is characterized by lipid-rich cytoplasmic deposition. However, the relationship between altered lipid metabolism and tumor progression in ccRCC is poorly understood. Here, we demonstrated that E2F transcription factor 1 (E2F1), in addition to its key role in regulating the cell cycle, induces extensive lipid accumulation and elevated levels of lipogenic enzymes in ccRCC cells by upregulating sterol regulatory element-binding protein 1 (SREBP1). E2F1 knockdown or SREBP1 suppression attenuated fatty acid (FA) de novo synthesis, cell proliferation and epithelial-mesenchymal transition (EMT) in ccRCC cells. Furthermore, overexpression of E2F1 promoted lipid storage, tumor growth and metastasis in a mouse xenograft model, whereas E2F1 downregulation or SREBP1 inhibition reversed these effects. In ccRCC patients, high levels of E2F1 and SREBP1 were associated with increased lipid accumulation and correlated with poor prognosis. Our results demonstrate that E2F1 can increase proliferation and metastasis through SREBP1-induced aberrant lipid metabolism, which is a novel critical signaling mechanism driving human ccRCC progression.
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Affiliation(s)
- Donglai Shen
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Yu Gao
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Qingbo Huang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Yundong Xuan
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Yuanxin Yao
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Liangyou Gu
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China.
| | - Yan Huang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Yu Zhang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Pin Li
- Department of Pediatric Urology, Bayi Children's Hospital Affiliated to the Seventh Medical Center of Chinese PLA General Hospital, Beijing, 100007, PR China.
| | - Yang Fan
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Lu Tang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Songliang Du
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China; School of Medicine, Nankai University, Tianjin, 300071, PR China.
| | - Shengpan Wu
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Hanfeng Wang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Chenfeng Wang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Huijie Gong
- Department of Urology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, PR China.
| | - Yuewen Pang
- Department of Urology, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, 100700, PR China.
| | - Xin Ma
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Baojun Wang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
| | - Xu Zhang
- Department of Urology, Chinese PLA General Hospita l, Beijing, 100853, PR China; State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital/Chinese PLA Medical School, Beijing, 100853, PR China.
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10
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Figueroa-Juárez E, Noriega LG, Pérez-Monter C, Alemán G, Hernández-Pando R, Correa-Rotter R, Ramírez V, Tovar AR, Torre-Villalvazo I, Tovar-Palacio C. The Role of the Unfolded Protein Response on Renal Lipogenesis in C57BL/6 Mice. Biomolecules 2021; 11:73. [PMID: 33430288 PMCID: PMC7825661 DOI: 10.3390/biom11010073] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/27/2020] [Accepted: 01/01/2021] [Indexed: 11/25/2022] Open
Abstract
Renal injury observed in several pathologies has been associated with lipid accumulation in the kidney. While it has been suggested that the accumulation of renal lipids depends on free fatty acids released from adipose tissue, it is not known whether in situ renal lipogenesis due to endoplasmic reticulum (ER) stress contributes to kidney injury. The aim of the present study was to elucidate the role of pharmacological ER stress in renal structure and function and its effect on renal lipid metabolism of C57BL/6 mice. ER stress increased serum creatinine and induced kidney structural abnormalities. Tunicamycin-administered mice developed hyperinsulinemia, augmented lipolysis and increased circulating leptin and adiponectin. Renal unfolded protein response (UPR) gene expression markers, the lipogenic transcription factor SREBP1 and the phosphorylation of eIF2α increased 8 h after tunicamycin administration. At 24 h, an increase in BiP protein content was accompanied by a reduction in p-eIF2α and increased SREBP-1 and FASn protein content, in addition to a significant increase in triglyceride content and a reduction in AMPK. Thus, ER stress induces in situ lipid synthesis, leading to renal lipid accumulation and functional alterations. Future pharmacological and/or dietary strategies must target renal ER stress to prevent kidney damage and the progression of metabolic diseases.
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Affiliation(s)
- Elizabeth Figueroa-Juárez
- Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke’s Hospital, University of Cambridge, Cambridge CB2 1TN, UK;
- Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico;
| | - Lilia G. Noriega
- Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico; (L.G.N.); (G.A.); (A.R.T.)
| | - Carlos Pérez-Monter
- Gastroenterología, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico;
| | - Gabriela Alemán
- Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico; (L.G.N.); (G.A.); (A.R.T.)
| | - Rogelio Hernández-Pando
- Patología Experimental, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico;
| | - Ricardo Correa-Rotter
- Nefrología y Metabolismo Mineral, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico;
| | - Victoria Ramírez
- Cirugía Experimental, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico;
| | - Armando R. Tovar
- Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico; (L.G.N.); (G.A.); (A.R.T.)
| | - Iván Torre-Villalvazo
- Fisiología de la Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico; (L.G.N.); (G.A.); (A.R.T.)
| | - Claudia Tovar-Palacio
- División de Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición, Salvador CDMX 14080, Mexico
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11
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Chen D, Jia D, Wu X, Shi K, Ren C, Dou Y, Guo M, Wang J, Ma M, Wu Z, Shi HY, Li W, Feng Y, Wu F. A novel metformin derivative showed improvement of lipid metabolism in obese rats with type 2 diabetes. Clin Exp Pharmacol Physiol 2020; 47:1382-1392. [PMID: 32155673 DOI: 10.1111/1440-1681.13302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/26/2020] [Accepted: 03/05/2020] [Indexed: 12/14/2022]
Abstract
In this study, we investigated the lipid metabolism regulatory activity of a novel metformin derivative (MD568) and its potential mechanism of action in obese rats with type 2 diabetes mellitus (T2 DM). Previous gene chip analysis of 3T3-L1 cells have shown that MD568 regulates the transcription of genes involved in the peroxisome proliferator-activated receptor (PPAR) signalling pathway, fatty acid metabolism, and glycerolipid metabolism. In this study, obese T2 DM rats were treated with MD568 (200 mg/kg) for 8 weeks. Results showed that MD568 significantly reduced the body weight gain, plasma glucose, insulin, total cholesterol, triglyceride, and low-density lipoprotein cholesterol levels. MD568 treatment also improved the insulin resistance of obese T2 DM model rats. In particular, in white adipose tissue, MD568 inhibited the excessive volume increment of adipose cells by down-regulating the protein levels of CCAAT/enhancer-binding protein-α (C/EBP-α) and PPAR-γ, as well as the transcription of their target lipid metabolism-related genes. In the liver, MD568 inhibited hepatic fatty lesions and interfered with hepatic gluconeogenesis by regulating the expression of lipid metabolism-related genes and glycogen-related kinases. In conclusion, our results suggest that the newly synthesized MD568 affects the maintenance of lipid homeostasis in obese type 2 diabetic rats.
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Affiliation(s)
- Deqi Chen
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Dan Jia
- Integrated Chinese and Western Medicine, Post-doctoral Research Station, Jinan University, Guangzhou, China
- Health Science Centre, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
- Shenzhen Institute of Geriatrics, Shenzhen, China
| | - Xia Wu
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Kexin Shi
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Cui Ren
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yonghui Dou
- Academy of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Mingxin Guo
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Juanxia Wang
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Min Ma
- Integrated Chinese and Western Medicine, Post-doctoral Research Station, Jinan University, Guangzhou, China
| | - Zhengzhi Wu
- Health Science Centre, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
- Shenzhen Institute of Geriatrics, Shenzhen, China
| | - He-Yong Shi
- Respiratory and Critical Care Medicine, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Weimin Li
- Academy of Traditional Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yifan Feng
- Central Laboratory, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fuhai Wu
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou, China
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12
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Nathanael J, Harsono HCA, Wibawa AD, Suardana P, Vianney YM, Dwi Putra SE. The genetic basis of high-carbohydrate and high-monosodium glutamate diet related to the increase of likelihood of type 2 diabetes mellitus: a review. Endocrine 2020; 69:18-29. [PMID: 32172486 DOI: 10.1007/s12020-020-02256-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 03/03/2020] [Indexed: 12/27/2022]
Abstract
Diabetes is one of the most common metabolic diseases. Aside from the genetic factor, previous studies stated that other factors such as environment, lifestyle, and paternal-maternal condition play critical roles in diabetes through DNA methylation in specific areas of the genome. One of diabetic cases is caused by insulin resistance and changing the homeostasis of blood glucose control so glucose concentration stood beyond normal rate (hyperglycemia). High fat diet has been frequently studied and linked to triggering diabetes. However, most Asians consume rice (or food with high carbohydrate) and food with monosodium glutamate (MSG). This habit could lead to pathophysiology of type 2 diabetes mellitus (T2D). Previous studies showed that high-carbohydrate or high-MSG diet could change gene expression or modify protein activity in body metabolism. This imbalanced metabolism can lead to pleiotropic effects of diabetes mellitus. In this study, the authors have attempted to relate various changes in genes expression or protein activity to the high-carbohydrate and high-MSG-induced diabetes. The authors have also tried to relate several genes that contribute to pathophysiology of T2D and proposed several ideas of genes as markers and target for curing people with T2D. These are done by investigating altered activities of various genes that cause or are caused by diabetes. These genes are selected based on their roles in pathophysiology of T2D.
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Affiliation(s)
- Joshua Nathanael
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia
| | - Hans Cristian Adhinatya Harsono
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia
| | - Aubrey Druce Wibawa
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia
| | - Putu Suardana
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia
| | - Yoanes Maria Vianney
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia
| | - Sulistyo Emantoko Dwi Putra
- Department of Biology, Faculty of Biotechnology, University of Surabaya, Raya Kalirungkut, Surabaya, East Java, 60292, Indonesia.
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13
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Zhao J, Zhang X, Gao T, Wang S, Hou Y, Yuan P, Yang Y, Yang T, Xing J, Li J, Liu S. SIK2 enhances synthesis of fatty acid and cholesterol in ovarian cancer cells and tumor growth through PI3K/Akt signaling pathway. Cell Death Dis 2020; 11:25. [PMID: 31932581 PMCID: PMC6957524 DOI: 10.1038/s41419-019-2221-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 12/15/2022]
Abstract
Salt-inducible kinase 2 (SIK2) has been established as a regulator of diverse biological processes including cell metabolism. A recent study has reported that SIK2 is required for adipocyte-induced ovarian cancer (OC) survival through facilitating fatty acid oxidation. However, whether SIK2 also plays a role in the lipid synthesis in OC cells remains elusive. Here, we showed that SIK2 significantly promoted the lipid synthesis in OC cells. On the one hand, SIK2 enhanced fatty acid synthesis through upregulating the expression of sterol regulatory element binding protein 1c (SREBP1c) and thus the transcription of major lipogenic enzyme FASN. On the other hand, SIK2 promoted cholesterol synthesis through upregulating the expression of sterol regulatory element binding protein 2 (SREBP2) and thus the transcription of major cholesterol synthesis enzymes HMGCR. Moreover, PI3K/Akt signaling pathway was found to be involved in the upregulation of SREBP1c and SREBP2 in OC cells. Moreover, in vitro and in vivo assays indicated that the SIK2-regulated fatty acid and cholesterol synthesis played a critical role in the growth of OC cells. Our findings demonstrate that SIK2 is a critical regulator of lipid synthesis in OC cells and thus promotes OC growth, which provides a strong line of evidence for this molecule to be used as a therapeutic target in the treatment of this malignancy.
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Affiliation(s)
- Jing Zhao
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Xiaohong Zhang
- Department of Gynaecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Tian Gao
- Department of Gynaecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Shanci Wang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastorenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yiran Hou
- Medical College of Yan'an University, Yan'an, Shaanxi, 716000, China
| | - Peng Yuan
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
- Department of Pain Treatment, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, 710038, China
| | - Yi Yang
- Department of Pain Treatment, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, 710038, China
| | - Tao Yang
- Department of Pain Treatment, Tangdu Hospital, The Fourth Military Medical University, Xi'an, Shaanxi, 710038, China
| | - Jinliang Xing
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Jibin Li
- State Key Laboratory of Cancer Biology and Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
- State Key Laboratory of Cancer Biology and Experimental Teaching Center of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
| | - Shujuan Liu
- Department of Gynaecology and Obstetrics, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi, 710032, China.
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14
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Yuan C, Xiong Z, Shi J, Peng J, Meng X, Wang C, Hu W, Ru Z, Xie K, Yang H, Chen K, Zhang X. Overexpression of PPT2 Represses the Clear Cell Renal Cell Carcinoma Progression by Reducing Epithelial-to-mesenchymal Transition. J Cancer 2020; 11:1151-1161. [PMID: 31956361 PMCID: PMC6959065 DOI: 10.7150/jca.36477] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 10/25/2019] [Indexed: 01/08/2023] Open
Abstract
Clear cell renal cell carcinoma (ccRCC) is one of the most common malignant tumors of the urinary system and has a poor response to radiotherapy and chemotherapy. To date, it is urgent to find effective biomarkers for the prevention and treatment of ccRCC. The occurrence and development of ccRCC is closely related to metabolic disturbances. Palmitoyl protein thioesterase 2 (PPT2) is a lysosomal thioesterase which is highly associated with metabolism, and it has never been studied in ccRCC. In this study, we first revealed PPT2 is significantly downregulated in ccRCC, and its expression level is highly correlated with clinicopathological parameters of ccRCC patients. Our ROC curve analyses evaluated the potential of PPT2 as a novel diagnostic marker and prognostic factor. Functional experiment results showed overexpression of PPT2 represses the proliferation, migration and invasion of ccRCC cells in vitro. Mechanistic investigations demonstrated that overexpression of PPT2 represses the ccRCC progression by reducing epithelial-to-mesenchymal transition (EMT). In conclusion, PPT2 is downregulated in ccRCC. Decreased PPT2 expression may be considered as a novel diagnostic marker and prognostic factor and serve as a therapeutic target for ccRCC.
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Affiliation(s)
- ChangFei Yuan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - ZhiYong Xiong
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Jian Shi
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - JingTao Peng
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - XianGui Meng
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cheng Wang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - WenJun Hu
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan 430030, China
| | - ZeYuan Ru
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan 430030, China
| | - KaiRu Xie
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan 430030, China
| | - HongMei Yang
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ke Chen
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - XiaoPing Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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15
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Matsumoto Y, Ma S, Tominaga T, Yokoyama K, Kitatani K, Horikawa K, Suzuki K. Acute Effects of Transdermal Administration of Jojoba Oil on Lipid Metabolism in Mice. ACTA ACUST UNITED AC 2019; 55:medicina55090594. [PMID: 31540183 PMCID: PMC6780807 DOI: 10.3390/medicina55090594] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 09/04/2019] [Accepted: 09/09/2019] [Indexed: 12/26/2022]
Abstract
Background and objectives: Aroma therapy is a complementary therapy using essential oils diluted with carrier oils. Jojoba oils have been widely used as carrier oils. However, limited information is available regarding their effects on blood biochemical parameters. This study aimed to investigate the effect of transdermal administration of jojoba oil on blood biochemical parameters in mice. Materials and Methods: Eight-week-old male hairless mice were randomly divided into naïve control and treatment groups. In the treatment group, mice were topically administered 4 μL of jojoba oil, per gram of body weight, on the dorsa 30 min before euthanasia. Thereafter, serum biochemical parameters were assayed, and gene expression was analyzed in various tissues via a real-time polymerase chain reaction. Results: Serum non-esterified fatty acid (NEFA) levels increased significantly 30 min after topical application of jojoba oil (p < 0.05). Atgl was significantly upregulated in the liver (p < 0.05), and Atgl upregulation in the liver was positively correlated with serum NEFA levels (r = 0.592, p < 0.05). Furthermore, a trend of decreasing fatty acid trafficking-related gene (FABPpm, FATP-1, FATP-3, and FATP-4) expression in the skin after topical application of jojoba oil (p = 0.067, 0.074, 0.076, and 0.082, respectively) was observed. Conclusions: Serum NEFA levels were elevated 30 min after transdermal administration of jojoba oil. The mechanisms of elevated serum NEFA levels might be related to both enhanced lipolysis in the liver and reduced fatty acid trafficking in the skin.
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Affiliation(s)
- Yutaka Matsumoto
- Faculty of Nursing, Tokai University School of Medicine, Isehara, Kanagawa 259-1292, Japan.
- Graduate School of Sports Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan.
| | - Sihui Ma
- Graduate School of Sports Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan.
| | - Takaki Tominaga
- Graduate School of Sports Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan.
| | - Keiko Yokoyama
- Support Center for Medical Research and Education, Tokai University, Isehara, Kanagawa 259-1292, Japan.
| | - Kanae Kitatani
- Support Center for Medical Research and Education, Tokai University, Isehara, Kanagawa 259-1292, Japan.
| | - Kazumasa Horikawa
- Faculty of Nursing, Tokai University School of Medicine, Isehara, Kanagawa 259-1292, Japan.
| | - Katsuhiko Suzuki
- Faculty of Sport Sciences, Waseda University, Tokorozawa, Saitama 359-1192, Japan.
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16
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Duy Binh T, L A Pham T, Nishihara T, Thanh Men T, Kamei K. The Function of Lipin in the Wing Development of Drosophila melanogaster. Int J Mol Sci 2019; 20:ijms20133288. [PMID: 31277421 PMCID: PMC6650997 DOI: 10.3390/ijms20133288] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 01/21/2023] Open
Abstract
Lipin is evolutionarily conserved from yeast to mammals. Although its roles in lipid metabolism in adipocyte tissue, skeletal muscle, and the liver, and as a transcriptional co-activator are known, its functions during development are still under investigation. In this study, we analyzed the role of Drosophila lipin (dLipin) in development. Specifically, we showed that the tissue-selective knockdown of dLipin in the wing pouch led to an atrophied wing. Elevated DNA damage was observed in the wing imaginal disc of dLipin-knockdown flies. dLipin dysfunction induced accumulation of cells in S phase and significantly reduced the number of mitotic cells, indicating DNA damage-induced activation of the G2/M checkpoint. Reduced expression of cyclin B, which is critical for the G2 to M transition, was observed in the margin of the wing imaginal disc of dLipin-knockdown flies. The knockdown of dLipin led to increased apoptotic cell death in the wing imaginal disc. Thus, our results suggest that dLipin is involved in DNA replication during normal cell cycle progression in wing development of Drosophila melanogaster.
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Affiliation(s)
- Tran Duy Binh
- Department of Functional Chemistry, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Tuan L A Pham
- Department of Functional Chemistry, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Taisei Nishihara
- Department of Functional Chemistry, Kyoto Institute of Technology, Kyoto 606-8585, Japan
| | - Tran Thanh Men
- Department of Biology, Can Tho University, Cantho City 900000, Vietnam
| | - Kaeko Kamei
- Department of Functional Chemistry, Kyoto Institute of Technology, Kyoto 606-8585, Japan.
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17
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In silico repurposing the Rac1 inhibitor NSC23766 for treating PTTG1-high expressing clear cell renal carcinoma. Pathol Res Pract 2019; 215:152373. [DOI: 10.1016/j.prp.2019.03.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2018] [Revised: 02/03/2019] [Accepted: 03/02/2019] [Indexed: 01/06/2023]
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18
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New mechanistic insights of clear cell renal cell carcinoma from integrated miRNA and mRNA expression profiling studies. Biomed Pharmacother 2019; 111:821-834. [DOI: 10.1016/j.biopha.2018.12.099] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 12/12/2018] [Accepted: 12/23/2018] [Indexed: 12/20/2022] Open
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19
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Abramczyk H, Imiela A, Śliwińska A. Novel strategies of Raman imaging for exploring cancer lipid reprogramming. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.10.082] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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20
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Wang K, Ruan H, Song Z, Cao Q, Bao L, Liu D, Xu T, Xiao H, Wang C, Cheng G, Tong J, Meng X, Yang H, Chen K, Zhang X. PLIN3 is up-regulated and correlates with poor prognosis in clear cell renal cell carcinoma. Urol Oncol 2018; 36:343.e9-343.e19. [PMID: 29773494 DOI: 10.1016/j.urolonc.2018.04.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 01/15/2018] [Accepted: 04/16/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND PLIN3, one of the members of the perilipin family, has been reported to be involved in the formation and accumulation of lipid droplets. However, the expression levels and diagnostic and prognostic value of PLIN3 in renal cell carcinoma (RCC) remain unclear. METHODS Bioinformatic analysis was used to assess the levels of PLIN3 and the correlation between PLIN3 levels and clinicopathological parameters in renal cancer. The expression levels of PLIN3 were determined in human RCC tissues and cell lines by western blot, immunofluorescence and immunohistochemistry assays. Receiver operating characteristic curves and Kaplan-Meier curves were used to analyze the diagnostic and prognostic significance of PLIN3 in RCC. RESULTS The expression level of PLIN3 was elevated in RCC tissues and cell lines, which was consistent with the analysis of the TCGA and Oncomine cancer database. The receiver operating characteristic curve indicated that high PLIN3 expression can distinguish cancer tissues from normal kidney tissues (area under the curve = 0.7270, P<0.0001). Kaplan-Meier curves revealed that elevated PLIN3 predicted poor disease-free survival and overall survival. CONCLUSIONS PLIN3 is highly expressed in kidney cancer, and high expression of PLIN3 can serve as a useful diagnostic and prognostic biomarker. PLIN3 functional inhibition can be used as a new clinical treatment option.
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Affiliation(s)
- Keshan Wang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - HaiLong Ruan
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - ZhengShuai Song
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Qi Cao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Lin Bao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Di Liu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - TianBo Xu
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - HaiBing Xiao
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Cheng Wang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Gong Cheng
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - JunWei Tong
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - XianGui Meng
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - HongMei Yang
- Department of Pathogenic Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ke Chen
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - XiaoPing Zhang
- Department of Urology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
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Jia D, Li Z, Gao Y, Feng Y, Li W. A novel triazine ring compound (MD568) exerts in vivo and in vitro effects on lipid metabolism. Biomed Pharmacother 2018; 103:790-799. [DOI: 10.1016/j.biopha.2018.04.065] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 04/07/2018] [Accepted: 04/09/2018] [Indexed: 12/30/2022] Open
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Heat shock protein 70 promotes lipogenesis in HepG2 cells. Lipids Health Dis 2018; 17:73. [PMID: 29631603 PMCID: PMC5891916 DOI: 10.1186/s12944-018-0722-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/25/2018] [Indexed: 12/14/2022] Open
Abstract
Background The increasing prevalence of non-alcoholic fatty liver disease (NAFLD) has followed the international rise in obesity rates. Multiple mechanisms are involved in NAFLD, including endoplasmic reticulum stress and oxidative stress. Heat shock protein 70 (HSP70), which is abundant in most organisms, is sensitive to stress. However, the role of HSP70 in NAFLD has not been investigated. Here, we investigated the possible role of HSP70 in lipid synthesis. Methods C57BL/6 mice were fed a high-fat diet, and HepG2 cells were treated with 0.5 mM palmitic acid (PA). HSP70 expression was detected by qPCR, Western blot and immunohistochemistry. Total cholesterol (TC) and triglyceride (TG) levels were detected by enzyme-linked immunosorbent assay (ELISA). After Hsp70 overexpression and knockdown, TC and TG levels and FAS, SCD, and ACC expression were detected. Results HSP70 expression was significantly increased in the livers of obese mice. In vitro, HSP70 expression was markedly induced by PA in HepG2 cells. Notably, HSP70 overexpression in HepG2 cells enhanced TC and TG synthesis, in parallel with the upregulation of lipogenic genes, including FAS, SCD and ACC. By contrast, HSP70 knockdown decreased the levels of cellular lipids and the expression of FAS, SCD, and ACC in HepG2 cells. Together, our results suggest that HSP70 may promote lipogenesis in HepG2 cells. Conclusions Heat shock protein 70 promotes lipogenesis in HepG2 cells.
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