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Carmon T, Hill N, Sripathi VR, Gossett ZB, Fakas S. The PAH1-encoded phosphatidate phosphatase of Yarrowia lipolytica differentially affects gene expression and lipid biosynthesis. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159544. [PMID: 39089641 DOI: 10.1016/j.bbalip.2024.159544] [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: 04/30/2024] [Revised: 07/25/2024] [Accepted: 07/29/2024] [Indexed: 08/04/2024]
Abstract
Yarrowia lipolytica is a model oleaginous yeast with a strong capacity for lipid accumulation, yet its lipid metabolic pathways and regulatory mechanisms remain largely unexplored. The PAH1-encoded phosphatidate (PA) phosphatase governs lipid biosynthesis by its enzymatic activity and regulating the transcription of genes involved in phospholipid biosynthesis. In this work, we examined the effect of the loss of Pah1 (i.e., pah1Δ) on cell metabolism in cells growing in low- and high-glucose media. Multi-omics analyses revealed the global effect of the pah1Δ mutation on lipid and central carbon metabolism. Lipidomics analyses showed that the pah1Δ mutation caused a massive decrease in the masses of triacylglycerol (TAG) and diacylglycerol (DAG), and these effects were independent of glucose concentration in the media. Conversely, phospholipid levels declined in low-glucose media but increased in high-glucose media. The loss of Pah1 affected the expression of genes involved in key pathways of glucose metabolism, such as glycolysis, citric acid cycle, oxidative phosphorylation, and the pentose phosphate pathway, and these effects were more pronounced in high-glucose media. In lipid biosynthesis, the genes catalyzing phosphatidylcholine (PC) synthesis from phosphatidylethanolamine (PE) were upregulated within the CDP-DAG pathway. In contrast, PC synthesis through the Kennedy pathway was downregulated. The ethanolamine branch of the Kennedy pathway that synthesizes PE was also upregulated in pah1Δ. Interestingly, we noted a massive increase in the levels of lysophospholipids, consistent with the upregulation of genes involved in lipid turnover. Overall, this work identified novel regulatory roles of Pah1 in lipid biosynthesis and gene expression.
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Affiliation(s)
- Taylor Carmon
- Department of Food and Animal Sciences, Alabama A&M University, Normal, AL 35762, USA
| | - Na'Taja Hill
- Department of Food and Animal Sciences, Alabama A&M University, Normal, AL 35762, USA
| | | | - Zachary B Gossett
- Department of Food and Animal Sciences, Alabama A&M University, Normal, AL 35762, USA
| | - Stylianos Fakas
- Department of Food and Animal Sciences, Alabama A&M University, Normal, AL 35762, USA.
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2
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Jama A, Alshudukhi AA, Burke S, Dong L, Kamau JK, Morris B, Alkhomsi IA, Finck BN, Voss AA, Ren H. Exploring lipin1 as a promising therapeutic target for the treatment of Duchenne muscular dystrophy. J Transl Med 2024; 22:664. [PMID: 39014470 PMCID: PMC11253568 DOI: 10.1186/s12967-024-05494-z] [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: 02/01/2024] [Accepted: 07/10/2024] [Indexed: 07/18/2024] Open
Abstract
BACKGROUND Duchenne muscular dystrophy (DMD) is a progressive and devastating muscle disease, resulting from the absence of dystrophin. This leads to cell membrane instability, susceptibility to contraction-induced muscle damage, subsequent muscle degeneration, and eventually disability and early death of patients. Currently, there is no cure for DMD. Our recent studies identified that lipin1 plays a critical role in maintaining myofiber stability and integrity. However, lipin1 gene expression levels are dramatically reduced in the skeletal muscles of DMD patients and mdx mice. METHODS To identify whether increased lipin1 expression could prevent dystrophic pathology, we employed unique muscle-specific mdx:lipin1 transgenic (mdx:lipin1Tg/0) mice in which lipin1 was restored in the dystrophic muscle of mdx mice, intramuscular gene delivery, as well as cell culture system. RESULTS We found that increased lipin1 expression suppressed muscle degeneration and inflammation, reduced fibrosis, strengthened membrane integrity, and resulted in improved muscle contractile and lengthening force, and muscle performance in mdx:lipin1Tg/0 compared to mdx mice. To confirm the role of lipin1 in dystrophic muscle, we then administered AAV1-lipin1 via intramuscular injection in mdx mice. Consistently, lipin1 restoration inhibited myofiber necroptosis and lessened muscle degeneration. Using a cell culture system, we further found that differentiated primary mdx myoblasts had elevated expression levels of necroptotic markers and medium creatine kinase (CK), which could be a result of sarcolemmal damage. Most importantly, increased lipin1 expression levels in differentiated myoblasts from mdx:lipin1Tg/0 mice substantially inhibited the elevation of necroptotic markers and medium CK levels. CONCLUSIONS Overall, our data suggest that lipin1 is a promising therapeutic target for the treatment of dystrophic muscles.
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Affiliation(s)
- Abdulrahman Jama
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA
| | - Abdullah A Alshudukhi
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA
- Department of Medical Laboratories, College of Applied Medical Sciences, Qassim University, Buraydah, Saudi Arabia
| | - Steve Burke
- Department of Biological Sciences, Wright State University, Dayton, OH, USA
| | - Lixin Dong
- Mumetel LLC, University Technology Park at IIT, Chicago, IL, USA
| | - John Karanja Kamau
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA
| | - Brooklyn Morris
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA
| | - Ibrahim A Alkhomsi
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA
| | - Brian N Finck
- Division of Geriatrics & Nutritional Science, Washington University School of Medicine, St. Louis, USA
| | - Andrew Alvin Voss
- Department of Biological Sciences, Wright State University, Dayton, OH, USA
| | - Hongmei Ren
- Department of Biochemistry and Molecular Biology, Wright State University, 3640 Colonel Glenn Hwy., Dayton, OH, 45435-0001, USA.
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3
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Xing Z, Zhang Y, Kang H, Dong H, Zhu D, Liu Y, Sun C, Guo P, Hu B, Tan A. ABHD5 regulates midgut-specific lipid homeostasis in Bombyx mori. INSECT SCIENCE 2024. [PMID: 38841829 DOI: 10.1111/1744-7917.13386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/27/2024] [Accepted: 05/03/2024] [Indexed: 06/07/2024]
Abstract
Lipids are an important energy source and are utilized as substrates for various physiological processes in insects. Comparative gene identification 58 (CGI-58), also known as α/β hydrolase domain-containing 5 (ABHD5), is a highly conserved and multifunctional gene involved in regulating lipid metabolism and cellular energy balance in many organisms. However, the biological functions of ABHD5 in insects are poorly understood. In the current study, we describe the identification and characterization of the ABHD5 gene in the lepidopteran model insect, Bombyx mori. The tissue expression profile investigated using quantitative reverse transcription polymerase chain reaction (RT-qPCR) reveals that BmABHD5 is widely expressed in all tissues, with particularly high levels found in the midgut and testis. A binary transgenic CRISPR/Cas9 system was employed to conduct a functional analysis of BmABHD5, with the mutation of BmABHD5 leading to the dysregulation of lipid metabolism and excessive lipid accumulation in the larval midgut. Histological and physiological analysis further reveals a significant accumulation of lipid droplets in the midgut of mutant larvae. RNA-seq and RT-qPCR analysis showed that genes related to metabolic pathways were significantly affected by the absence of BmABHD5. Altogether, our data prove that BmABHD5 plays an important role in regulating tissue-specific lipid metabolism in the silkworm midgut.
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Affiliation(s)
- Zhiping Xing
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Yuting Zhang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Hongxia Kang
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Hui Dong
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Dalin Zhu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Yutong Liu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Chenxin Sun
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Peilin Guo
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Bo Hu
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
| | - Anjiang Tan
- Jiangsu Key Laboratory of Sericultural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Province, China
- Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture, The Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu Province, China
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4
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Bo T, Gao L, Yao Z, Shao S, Wang X, Proud CG, Zhao J. Hepatic selective insulin resistance at the intersection of insulin signaling and metabolic dysfunction-associated steatotic liver disease. Cell Metab 2024; 36:947-968. [PMID: 38718757 DOI: 10.1016/j.cmet.2024.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 01/22/2024] [Accepted: 04/09/2024] [Indexed: 06/26/2024]
Abstract
Insulin resistance (IR) is a major pathogenic factor in the progression of MASLD. In the liver, insulin suppresses gluconeogenesis and enhances de novo lipogenesis (DNL). During IR, there is a defect in insulin-mediated suppression of gluconeogenesis, but an unrestrained increase in hepatic lipogenesis persists. The mechanism of increased hepatic steatosis in IR is unclear and remains controversial. The key discrepancy is whether insulin retains its ability to directly regulate hepatic lipogenesis. Blocking insulin/IRS/AKT signaling reduces liver lipid deposition in IR, suggesting insulin can still regulate lipid metabolism; hepatic glucose metabolism that bypasses insulin's action may contribute to lipogenesis; and due to peripheral IR, other tissues are likely to impact liver lipid deposition. We here review the current understanding of insulin's action in governing different aspects of hepatic lipid metabolism under normal and IR states, with the purpose of highlighting the essential issues that remain unsettled.
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Affiliation(s)
- Tao Bo
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Medical Science and Technology Innovation Center, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Ling Gao
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Central Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China
| | - Zhenyu Yao
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China
| | - Shanshan Shao
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China
| | - Xuemin Wang
- Lifelong Health, South Australian Health & Medical Research Institute, North Terrace, Adelaide, SA, Australia
| | - Christopher G Proud
- Lifelong Health, South Australian Health & Medical Research Institute, North Terrace, Adelaide, SA, Australia.
| | - Jiajun Zhao
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education, Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China; Shandong Key Laboratory of Endocrinology and Lipid Metabolism, Jinan, Shandong, China.
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5
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Trejo-Solís C, Castillo-Rodríguez RA, Serrano-García N, Silva-Adaya D, Vargas-Cruz S, Chávez-Cortéz EG, Gallardo-Pérez JC, Zavala-Vega S, Cruz-Salgado A, Magaña-Maldonado R. Metabolic Roles of HIF1, c-Myc, and p53 in Glioma Cells. Metabolites 2024; 14:249. [PMID: 38786726 PMCID: PMC11122955 DOI: 10.3390/metabo14050249] [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: 04/01/2024] [Revised: 04/18/2024] [Accepted: 04/20/2024] [Indexed: 05/25/2024] Open
Abstract
The metabolic reprogramming that promotes tumorigenesis in glioblastoma is induced by dynamic alterations in the hypoxic tumor microenvironment, as well as in transcriptional and signaling networks, which result in changes in global genetic expression. The signaling pathways PI3K/AKT/mTOR and RAS/RAF/MEK/ERK stimulate cell metabolism, either directly or indirectly, by modulating the transcriptional factors p53, HIF1, and c-Myc. The overexpression of HIF1 and c-Myc, master regulators of cellular metabolism, is a key contributor to the synthesis of bioenergetic molecules that mediate glioma cell transformation, proliferation, survival, migration, and invasion by modifying the transcription levels of key gene groups involved in metabolism. Meanwhile, the tumor-suppressing protein p53, which negatively regulates HIF1 and c-Myc, is often lost in glioblastoma. Alterations in this triad of transcriptional factors induce a metabolic shift in glioma cells that allows them to adapt and survive changes such as mutations, hypoxia, acidosis, the presence of reactive oxygen species, and nutrient deprivation, by modulating the activity and expression of signaling molecules, enzymes, metabolites, transporters, and regulators involved in glycolysis and glutamine metabolism, the pentose phosphate cycle, the tricarboxylic acid cycle, and oxidative phosphorylation, as well as the synthesis and degradation of fatty acids and nucleic acids. This review summarizes our current knowledge on the role of HIF1, c-Myc, and p53 in the genic regulatory network for metabolism in glioma cells, as well as potential therapeutic inhibitors of these factors.
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Affiliation(s)
- Cristina Trejo-Solís
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Departamento de Neurofisiología, Laboratorio Clínico y Banco de Sangre y Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de Mexico 14269, Mexico; (N.S.-G.); (D.S.-A.); (S.Z.-V.)
| | | | - Norma Serrano-García
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Departamento de Neurofisiología, Laboratorio Clínico y Banco de Sangre y Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de Mexico 14269, Mexico; (N.S.-G.); (D.S.-A.); (S.Z.-V.)
| | - Daniela Silva-Adaya
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Departamento de Neurofisiología, Laboratorio Clínico y Banco de Sangre y Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de Mexico 14269, Mexico; (N.S.-G.); (D.S.-A.); (S.Z.-V.)
- Centro de Investigación Sobre el Envejecimiento, Centro de Investigación y de Estudios Avanzados (CIE-CINVESTAV), Ciudad de Mexico 14330, Mexico
| | - Salvador Vargas-Cruz
- Departamento de Cirugía, Hospital Ángeles del Pedregal, Camino a Sta. Teresa, Ciudad de Mexico 10700, Mexico;
| | | | - Juan Carlos Gallardo-Pérez
- Departamento de Fisiopatología Cardio-Renal, Departamento de Bioquímica, Instituto Nacional de Cardiología, Ciudad de Mexico 14080, Mexico;
| | - Sergio Zavala-Vega
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Departamento de Neurofisiología, Laboratorio Clínico y Banco de Sangre y Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de Mexico 14269, Mexico; (N.S.-G.); (D.S.-A.); (S.Z.-V.)
| | - Arturo Cruz-Salgado
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico;
| | - Roxana Magaña-Maldonado
- Laboratorio Experimental de Enfermedades Neurodegenerativas, Departamento de Neurofisiología, Laboratorio Clínico y Banco de Sangre y Laboratorio de Reprogramación Celular, Instituto Nacional de Neurología y Neurocirugía, Ciudad de Mexico 14269, Mexico; (N.S.-G.); (D.S.-A.); (S.Z.-V.)
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6
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Slane EG, Tambrini SJ, Cummings BS. Therapeutic potential of lipin inhibitors for the treatment of cancer. Biochem Pharmacol 2024; 222:116106. [PMID: 38442792 DOI: 10.1016/j.bcp.2024.116106] [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: 12/18/2023] [Revised: 01/28/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
Lipins are phosphatidic acid phosphatases (PAP) that catalyze the conversion of phosphatidic acid (PA) to diacylglycerol (DAG). Three lipin isoforms have been identified: lipin-1, -2 and -3. In addition to their PAP activity, lipin-1 and -2 act as transcriptional coactivators and corepressors. Lipins have been intensely studied for their role in regulation of lipid metabolism and adipogenesis; however, lipins are hypothesized to mediate several pathologies, such as those involving metabolic diseases, neuropathy and even cognitive impairment. Recently, an emerging role for lipins have been proposed in cancer. The study of lipins in cancer has been hampered by lack of inhibitors that have selectivity for lipins, that differentiate between lipin family members, or that are suitable for in vivo studies. Such inhibitors have the potential to be extremely useful as both molecular tools and therapeutics. This review describes the expression and function of lipins in various tissues and their roles in several diseases, but with an emphasis on their possible role in cancer. The mechanisms by which lipins mediate cancer cell growth are discussed and the potential usefulness of selective lipin inhibitors is hypothesized. Finally, recent studies reporting the crystallization of lipin-1 are discussed to facilitate rational design of novel lipin inhibitors.
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Affiliation(s)
- Elizabeth G Slane
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA
| | - Samantha J Tambrini
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA
| | - Brian S Cummings
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, MI 48201, USA.
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7
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Erazo-Oliveras A, Muñoz-Vega M, Salinas ML, Wang X, Chapkin RS. Dysregulation of cellular membrane homeostasis as a crucial modulator of cancer risk. FEBS J 2024; 291:1299-1352. [PMID: 36282100 PMCID: PMC10126207 DOI: 10.1111/febs.16665] [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: 06/18/2022] [Revised: 09/09/2022] [Accepted: 10/24/2022] [Indexed: 11/07/2022]
Abstract
Cellular membranes serve as an epicentre combining extracellular and cytosolic components with membranous effectors, which together support numerous fundamental cellular signalling pathways that mediate biological responses. To execute their functions, membrane proteins, lipids and carbohydrates arrange, in a highly coordinated manner, into well-defined assemblies displaying diverse biological and biophysical characteristics that modulate several signalling events. The loss of membrane homeostasis can trigger oncogenic signalling. More recently, it has been documented that select membrane active dietaries (MADs) can reshape biological membranes and subsequently decrease cancer risk. In this review, we emphasize the significance of membrane domain structure, organization and their signalling functionalities as well as how loss of membrane homeostasis can steer aberrant signalling. Moreover, we describe in detail the complexities associated with the examination of these membrane domains and their association with cancer. Finally, we summarize the current literature on MADs and their effects on cellular membranes, including various mechanisms of dietary chemoprevention/interception and the functional links between nutritional bioactives, membrane homeostasis and cancer biology.
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Affiliation(s)
- Alfredo Erazo-Oliveras
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Mónica Muñoz-Vega
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Michael L. Salinas
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Xiaoli Wang
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
| | - Robert S. Chapkin
- Program in Integrative Nutrition and Complex Diseases; Texas A&M University; College Station, Texas, 77843; USA
- Department of Nutrition; Texas A&M University; College Station, Texas, 77843; USA
- Center for Environmental Health Research; Texas A&M University; College Station, Texas, 77843; USA
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8
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Lin S, Wang L, Jia Y, Sun Y, Qiao P, Quan Y, Liu J, Hu H, Yang B, Zhou H. Lipin-1 deficiency deteriorates defect of fatty acid β-oxidation and lipid-related kidney damage in diabetic kidney disease. Transl Res 2024; 266:1-15. [PMID: 37433392 DOI: 10.1016/j.trsl.2023.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/13/2023]
Abstract
Diabetic lipo-toxicity is a fundamental pathophysiologic mechanism in DM and is now increasingly recognized a key determinant of DKD. Targeting lipid metabolic disorders is an important therapeutic strategy for the treatment of DM and its complications, including DKD. This study aimed to explore the molecular mechanism of lipid metabolic regulation in kidney, especially renal PTECs, and elucidate the role of lipid metabolic related molecule lipin-1 in diabetic lipid-related kidney damage. In this study, lipin-1-deficient db/db mouse model and STZ/HFD-induced T2DM mouse model were used to determine the effect of lipin-1 on DKD development. Then RPTCs and LPIN1 knockdown or overexpressed HK-2 cells induced by PA were used to investigate the mechanism. We found that the expression of lipin-1 increased early and then decreased in kidney during the progression of DKD. Glucose and lipid metabolic disorders and renal insufficiency were found in these 2 types of diabetic mouse models. Interestingly, lipin-1 deficiency might be a pathogenic driver of DKD-to-CKD transition, which could further accelerate the imbalance of renal lipid homeostasis, the dysfunction of mitochondrial and energy metabolism in PTECs. Mechanistically, lipin-1 deficiency resulted in aggravated PTECs injury to tubulointerstitial fibrosis in DKD by downregulating FAO via inhibiting PGC-1α/PPARα mediated Cpt1α/HNF4α signaling and upregulating SREBPs to promote fat synthesis. This study provided new insights into the role of lipin-1 as a regulator for maintaining lipid homeostasis in the kidney, especially PTECs, and its deficiency led to the progression of DKD.
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Affiliation(s)
- Simei Lin
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Liang Wang
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Yingli Jia
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Ying Sun
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, Xuzhou, China
| | - Panshuang Qiao
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Yazhu Quan
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Jihan Liu
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China
| | - Huihui Hu
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Fujian, China
| | - Baoxue Yang
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China
| | - Hong Zhou
- Department of Pharmacology, State Key Laboratory of Natural and Biomimetic Drugs, School of Basic Medical Sciences, Peking University, Beijing, China; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education, Beijing, China.
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9
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Qian L, Zhu Y, Deng C, Liang Z, Chen J, Chen Y, Wang X, Liu Y, Tian Y, Yang Y. Peroxisome proliferator-activated receptor gamma coactivator-1 (PGC-1) family in physiological and pathophysiological process and diseases. Signal Transduct Target Ther 2024; 9:50. [PMID: 38424050 PMCID: PMC10904817 DOI: 10.1038/s41392-024-01756-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 01/13/2024] [Accepted: 01/23/2024] [Indexed: 03/02/2024] Open
Abstract
Peroxisome proliferator-activated receptor gamma coactivator-1 (PGC-1) family (PGC-1s), consisting of three members encompassing PGC-1α, PGC-1β, and PGC-1-related coactivator (PRC), was discovered more than a quarter-century ago. PGC-1s are essential coordinators of many vital cellular events, including mitochondrial functions, oxidative stress, endoplasmic reticulum homeostasis, and inflammation. Accumulating evidence has shown that PGC-1s are implicated in many diseases, such as cancers, cardiac diseases and cardiovascular diseases, neurological disorders, kidney diseases, motor system diseases, and metabolic disorders. Examining the upstream modulators and co-activated partners of PGC-1s and identifying critical biological events modulated by downstream effectors of PGC-1s contribute to the presentation of the elaborate network of PGC-1s. Furthermore, discussing the correlation between PGC-1s and diseases as well as summarizing the therapy targeting PGC-1s helps make individualized and precise intervention methods. In this review, we summarize basic knowledge regarding the PGC-1s family as well as the molecular regulatory network, discuss the physio-pathological roles of PGC-1s in human diseases, review the application of PGC-1s, including the diagnostic and prognostic value of PGC-1s and several therapies in pre-clinical studies, and suggest several directions for future investigations. This review presents the immense potential of targeting PGC-1s in the treatment of diseases and hopefully facilitates the promotion of PGC-1s as new therapeutic targets.
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Affiliation(s)
- Lu Qian
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Yanli Zhu
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Chao Deng
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Zhenxing Liang
- Department of Cardiothoracic Surgery, The First Affiliated Hospital of Zhengzhou University, 1 Jianshe East, Zhengzhou, 450052, China
| | - Junmin Chen
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Ying Chen
- Department of Hematology, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Xue Wang
- Department of Cardiovascular Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, 277 Yanta West Road, Xi'an, 710061, China
| | - Yanqing Liu
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Ye Tian
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China
| | - Yang Yang
- Xi'an Key Laboratory of Cardiovascular and Cerebrovascular Diseases, Xi'an No.3 Hospital, The Affiliated Hospital of Northwest University, Northwest University, Xi'an, 710021, China.
- Xi'an Key Laboratory of Innovative Drug Research for Heart Failure, Faculty of Life Sciences and Medicine, Northwest University, 229 Taibai North Road, Xi'an, 710069, China.
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10
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Joo HJ, D'Alessandro M, Oh G, Han S, Kim WJ, Chung GE, Jang Y, Lee JB, Lee C, Yang Y. Novel targets of β-TrCP cooperatively accelerate carbohydrate and fatty acid consumption. J Cell Physiol 2024; 239:e31095. [PMID: 37584358 DOI: 10.1002/jcp.31095] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/17/2023]
Abstract
Cellular energy is primarily produced from glucose and fat through glycolysis and fatty acid oxidation (FAO) followed by the tricarboxylic acid cycle in mitochondria; energy homeostasis is carefully maintained via numerous feedback pathways. In this report, we uncovered a new master regulator of carbohydrate and lipid metabolism. When ubiquitin E3 ligase β-TrCP2 was inducibly knocked out in β-TrCP1 knockout adult mice, the resulting double knockout mice (DKO) lost fat mass rapidly. Biochemical analyses of the tissues and cells from β-TrCP2 KO and DKO mice revealed that glycolysis, FAO, and lipolysis were dramatically upregulated. The absence of β-TrCP2 increased the protein stability of metabolic rate-limiting enzymes including 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase (PFKFB3), adipose triglyceride lipase (ATGL), carnitine palmitoyltransferase 1A (CPT1A), and carnitine/acylcarnitine translocase (CACT). Our data suggest that β-TrCP is a potential regulator for total energy homeostasis by simultaneously controlling glucose and fatty acid metabolism and that targeting β-TrCP could be an effective strategy to treat obesity and other metabolic disorders.
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Affiliation(s)
- Hyun Jeong Joo
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida, USA
| | - Matthew D'Alessandro
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida, USA
| | - Gaeun Oh
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Sora Han
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Woo Jung Kim
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Ga Eun Chung
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Youjeong Jang
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Jung Bok Lee
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
| | - Choogon Lee
- Department of Biomedical Sciences, Florida State University, Tallahassee, Florida, USA
| | - Young Yang
- Department of Biological Sciences, Sookmyung Women's University, Seoul, Republic of Korea
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11
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Deng R, Zheng Z, Hu S, Wang M, Feng J, Mattjus P, Zhang Z, Zhang Y. Loss of Nrf1 rather than Nrf2 leads to inflammatory accumulation of lipids and reactive oxygen species in human hepatoma cells, which is alleviated by 2-bromopalmitate. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2024; 1871:119644. [PMID: 37996059 DOI: 10.1016/j.bbamcr.2023.119644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 11/09/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023]
Abstract
Since Nrf1 and Nrf2 are essential for regulating the lipid metabolism pathways, their dysregulation has thus been shown to be critically involved in the non-controllable inflammatory transformation into cancer. Herein, we have explored the molecular mechanisms underlying their distinct regulation of lipid metabolism, by comparatively analyzing the changes in those lipid metabolism-related genes in Nrf1α-/- and/or Nrf2-/- cell lines relative to wild-type controls. The results revealed that loss of Nrf1α leads to lipid metabolism disorders. That is, its lipid synthesis pathway was up-regulated by the JNK-Nrf2-AP1 signaling, while its lipid decomposition pathway was down-regulated by the nuclear receptor PPAR-PGC1 signaling, thereby resulting in severe accumulation of lipids as deposited in lipid droplets. By contrast, knockout of Nrf2 gave rise to decreases in lipid synthesis and uptake capacity. These demonstrate that Nrf1 and Nrf2 contribute to significant differences in the cellular lipid metabolism profiles and relevant pathological responses. Further experimental evidence unraveled that lipid deposition in Nrf1α-/- cells resulted from CD36 up-regulation by activating the PI3K-AKT-mTOR pathway, leading to abnormal activation of the inflammatory response. This was also accompanied by a series of adverse consequences, e.g., accumulation of reactive oxygen species (ROS) in Nrf1α-/- cells. Interestingly, treatment of Nrf1α-/- cells with 2-bromopalmitate (2BP) enabled the yield of lipid droplets to be strikingly alleviated, as accompanied by substantial abolishment of CD36 and critical inflammatory cytokines. Such Nrf1α-/- -led inflammatory accumulation of lipids, as well as ROS, was significantly ameliorated by 2BP. Overall, this study provides a potential strategy for cancer prevention and treatment by precision targeting of Nrf1, Nrf2 alone or both.
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Affiliation(s)
- Rongzhen Deng
- Bioengineering College and Graduate School, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China; Chongqing University Jiangjin Hospital, School of Medicine, Chongqing University, No. 725 Jiangzhou Avenue, Dingshan Street, Jiangjin District, Chongqing 402260, China; The Laboratory of Cell Biochemistry and Topogenetic Regulation, College of Bioengineering and Faculty of Medical Sciences, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China
| | - Ze Zheng
- Bioengineering College and Graduate School, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China
| | - Shaofan Hu
- Bioengineering College and Graduate School, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China; Chongqing University Jiangjin Hospital, School of Medicine, Chongqing University, No. 725 Jiangzhou Avenue, Dingshan Street, Jiangjin District, Chongqing 402260, China; The Laboratory of Cell Biochemistry and Topogenetic Regulation, College of Bioengineering and Faculty of Medical Sciences, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China
| | - Meng Wang
- Bioengineering College and Graduate School, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China
| | - Jing Feng
- Bioengineering College and Graduate School, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China
| | - Peter Mattjus
- Department of biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Artillerigatan 6A, III, BioCity, FI-20520 Turku, Finland
| | - Zhengwen Zhang
- Laboratory of Neuroscience, institute of Cognitive Neuroscience and School of Pharmacy, University College London, 29-39 Brunswick Square, London WC1N 1AX, England, United Kingdom
| | - Yiguo Zhang
- Chongqing University Jiangjin Hospital, School of Medicine, Chongqing University, No. 725 Jiangzhou Avenue, Dingshan Street, Jiangjin District, Chongqing 402260, China; The Laboratory of Cell Biochemistry and Topogenetic Regulation, College of Bioengineering and Faculty of Medical Sciences, Chongqing University, No. 174 Shazheng Street, Shapingba District, Chongqing 400044, China.
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12
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Wang F, Liu Y, Dong Y, Zhao M, Huang H, Jin J, Fan L, Xiang R. Haploinsufficiency of Lipin3 leads to hypertriglyceridemia and obesity by disrupting the expression and nucleocytoplasmic localization of Lipin1. Front Med 2024; 18:180-191. [PMID: 37776435 DOI: 10.1007/s11684-023-1003-0] [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: 12/16/2022] [Accepted: 04/27/2023] [Indexed: 10/02/2023]
Abstract
Lipin proteins including Lipin 1-3 act as transcriptional co-activators and phosphatidic acid phosphohydrolase enzymes, which play crucial roles in lipid metabolism. However, little is known about the function of Lipin3 in triglyceride (TG) metabolism. Here, we identified a novel mutation (NM_001301860: p.1835A>T/p.D612V) of Lipin3 in a large family with hypertriglyceridemia (HTG) and obesity through whole-exome sequencing and Sanger sequencing. Functional studies revealed that the novel variant altered the half-life and stability of the Lipin3 protein. Hence, we generated Lipin3 heterozygous knockout (Lipin3-heKO) mice and cultured primary hepatocytes to explore the pathophysiological roles of Lipin3 in TG metabolism. We found that Lipin3-heKO mice exhibited obvious obesity, HTG, and non-alcoholic fatty liver disorder. Mechanistic study demonstrated that the haploinsufficiency of Lipin3 in primary hepatocytes may induce the overexpression and abnormal distribution of Lipin1 in cytosol and nucleoplasm. The increased expression of Lipin1 in cytosol may contribute to TG anabolism, and the decreased Lipin1 in nucleoplasm can reduce PGC1α, further leading to mitochondrial dysfunction and reduced TG catabolism. Our study suggested that Lipin3 was a novel disease-causing gene inducing obesity and HTG. We also established a relationship between Lipin3 and mitochondrial dysfunction.
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Affiliation(s)
- Fang Wang
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Yuxing Liu
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, China
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China
| | - Yi Dong
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China
| | - Meifang Zhao
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China
| | - Hao Huang
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China
| | - Jieyuan Jin
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China
| | - Liangliang Fan
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, China.
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China.
| | - Rong Xiang
- Department of Endocrinology, The Third Xiangya Hospital of Central South University, Changsha, 410013, China.
- Department of Cellular Biology, School of Life Sciences, Key Laboratory of Pediatric Rare Diseases, Ministry of Education, Central South University, Changsha, 410013, China.
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13
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Han X, Huang S, Zhuang Z, Zhang X, Xie M, Lou N, Hua M, Zhuang X, Yu S, Chen S. Phosphatidate phosphatase Lipin1 involves in diabetic encephalopathy pathogenesis via regulating synaptic mitochondrial dynamics. Redox Biol 2024; 69:102996. [PMID: 38103341 PMCID: PMC10770635 DOI: 10.1016/j.redox.2023.102996] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023] Open
Abstract
Diabetic encephalopathy (DE) is a common central nervous system complication of diabetes mellitus without effective therapy currently. Recent studies have highlighted synaptic mitochondrial damages as a possible pathological basis for DE, but the underlying mechanisms remain unclear. Our previous work has revealed that phosphatidate phosphatase Lipin1, a critical enzyme involved with phospholipid synthesis, is closely related to the pathogenesis of DE. Here, we demonstrate that Lipin1 is significantly down-regulated in rat hippocampus of DE. Knock-down of Lipin1 within hippocampus of normal rats induces dysregulation of homeostasis in synaptic mitochondrial dynamics with an increase of mitochondrial fission and a decrease of fusion, then causes synaptic mitochondrial dysfunction, synaptic plasticity deficits as well as cognitive impairments, similar to that observed in response to chronic hyperglycemia exposure. In contrast, an up-regulation of Lipin1 within hippocampus in the DE model ameliorates this cascade of dysfunction. We also find that the effect of Lipin1 that regulating mitochondrial dynamics results from maintaining appropriate phospholipid components in the mitochondrial membrane. In conclusion, alterations in hippocampal Lipin1 contribute to hippocampal synaptic mitochondrial dysfunction and cognitive deficits observed in DE. Targeting Lipin1 might be a potential therapeutic strategy for the clinical treatment of DE.
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Affiliation(s)
- Xiaolin Han
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Shan Huang
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Ziyun Zhuang
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China; Department of Endocrinology and Metabolism, First People's Hospital of Jinan, Jinan, 250011, China
| | - Xiaochen Zhang
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China; Department of Clinical Medicine, Heze Medical College, Heze, 274009, China
| | - Min Xie
- Department of Endocrinology and Metabolism, Binzhou Medical University Hospital, Binzhou, 256603, China
| | - Nengjun Lou
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China; Multidisciplinary Innovation Center for Nephrology of the Second Hospital of Shandong University, Jinan, 250033, China
| | - Mengyu Hua
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China
| | - Xianghua Zhuang
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China; Multidisciplinary Innovation Center for Nephrology of the Second Hospital of Shandong University, Jinan, 250033, China.
| | - Shuyan Yu
- Department of Physiology, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, 250012, China.
| | - Shihong Chen
- Depratment of Endocrinology and Metabolism, The Second Hospital of Shandong University, Jinan, 250033, China; Multidisciplinary Innovation Center for Nephrology of the Second Hospital of Shandong University, Jinan, 250033, China.
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Guo Y, Wei Z, Zhang Y, Cao J. Research Progress on the Mechanism of Milk Fat Synthesis in Cows and the Effect of Conjugated Linoleic Acid on Milk Fat Metabolism and Its Underlying Mechanism: A Review. Animals (Basel) 2024; 14:204. [PMID: 38254373 PMCID: PMC10812695 DOI: 10.3390/ani14020204] [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: 12/15/2023] [Revised: 12/29/2023] [Accepted: 01/05/2024] [Indexed: 01/24/2024] Open
Abstract
Milk fat synthesis in cows mainly includes the synthesis of short- and medium-chain fatty acids, the uptake, transport, and activation of long-chain fatty acids (LCFAs), the synthesis of triglycerides, and the synthesis of the genes, transcription factors, and signaling pathways involved. Although the various stages of milk fat synthesis have been outlined in previous research, only partial processes have been revealed. CLA consists of an aggregation of positional and geometric isomers of linoleic fatty acid, and the accumulated evidence suggests that the two isomers of the active forms of CLA (cis-9, trans-11 conjugated linoleic acid and trans-10, cis-12 conjugated linoleic acid, abbreviated as c9, t11-CLA and t10, c12-CLA) can reduce the fat content in milk by regulating lipogenesis, fatty acid (FA) uptake, oxidation, and fat synthesis. However, the mechanism through which CLA inhibits milk fat synthesis is unique, with most studies focusing only on the effects of CLA on one of the genes, transcription factors, or signaling pathways involved. In this study, we summarized the structure and function of classic genes and pathways (mTOR, SREBP, AMPK, and PPARG) and new genes or pathways (THRSP, METTL3, ELOVL, and LPIN1) involved in each stage of milk fat synthesis and demonstrated the interactions between genes and pathways. We also examined the effects of other substances (melanin, nicotinic acid, SA, etc.). Furthermore, we evaluated the influence of β-sitosterol, sodium butyrate, Met arginine, and Camellia oleifera Abel on milk fat synthesis to improve the mechanism of milk fat synthesis in cows and provide a mechanistic reference for the use of CLA in inhibiting milk fat biosynthesis.
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Affiliation(s)
- Yuanyin Guo
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (Y.G.); (Z.W.)
| | - Ziang Wei
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (Y.G.); (Z.W.)
| | - Yi Zhang
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China;
| | - Jie Cao
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (Y.G.); (Z.W.)
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15
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Suk FM, Hsu FY, Hsu MH, Chiu WC, Fang CC, Chen TL, Liao YJ. Treatment with a new barbituric acid derivative suppresses diet-induced metabolic dysfunction and non-alcoholic fatty liver disease in mice. Life Sci 2024; 336:122327. [PMID: 38061536 DOI: 10.1016/j.lfs.2023.122327] [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: 10/18/2023] [Revised: 11/21/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023]
Abstract
INTRODUCTION Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease, often accompanied by obesity, diabetes, and increased risks of depression and anxiety. Currently, there are no FDA-approved drugs to treat NAFLD and its related systemic symptoms. Previously, we identified a new barbituric acid derivative (BA-5) that expressed effectiveness against fibrosis and drug-resistant hepatocellular carcinoma. AIMS This study investigated the potential of BA-5 against high-fat diet (HFD)-induced NAFLD and mood disorders in mice. MAIN METHODS Six-weeks-old male C57BL/6 mice were fed with a 45 % HFD for 8 weeks to induce NAFLD and associated metabolic disorders. Mice were treated with a BA-5 and the therapeutic effects and the underlying molecular mechanisms were investigated. KEY FINDINGS Administration of BA-5 significantly reduced serum levels of alanine aminotransferase (ALT), low-density lipoprotein (LDL), fatty acids (FA), and triglycerides (TG) in HFD-fed mice. BA-5 treatment decreased expressions of hepatic lipogenesis-related markers (acetyl-CoA carboxylase (ACC), fatty acid synthase (FAS), and ATP-citrate lyase (ACLY)), increased fatty acid oxidation markers (carnitine palmitoyltransferase 1A (CPT1A) and acyl-CoA oxidase 1 (ACOX1)), and attenuated hepatic fat accumulation in HFD-fed mice. Moreover, HFD-induced adipocyte size enlargement and activation of lipolysis markers such as phosphorylated (p)-hormone-sensitive lipase (HSL) 565, p-HSL 660, and perilipin were inhibited in BA-5-treated mice. Notably, HFD-induced anxiety- and depression-like behaviors significantly improved in the BA-5 treated group through enhanced anti-inflammatory responses in the hippocampus. SIGNIFICANCE This study provides new insights into clinical therapeutic strategies of barbituric acid derivatives for HFD-induced NAFLD and associated mood disturbances.
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Affiliation(s)
- Fat-Moon Suk
- Division of Gastroenterology, Department of Internal Medicine, Wan Fang Hospital, Taipei Medical University, Taipei 11696, Taiwan; Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Fang-Yu Hsu
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Shuang-Ho Campus, New Taipei City 23561, Taiwan
| | - Ming-Hua Hsu
- Department of Chemistry, National Changhua University of Education, Changhua 500, Taiwan
| | - Wan-Chun Chiu
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan; Research Center of Geriatric Nutrition, College of Nutrition, Taipei Medical University, Taipei 110, Taiwan; Department of Nutrition, Wan Fang Hospital, Taipei Medical University, Taipei 116, Taiwan
| | - Cheng-Chieh Fang
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Shuang-Ho Campus, New Taipei City 23561, Taiwan
| | - Tzu-Lang Chen
- Department of Medical Education, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan
| | - Yi-Jen Liao
- School of Medical Laboratory Science and Biotechnology, College of Medical Science and Technology, Taipei Medical University, Shuang-Ho Campus, New Taipei City 23561, Taiwan; TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei 11031, Taiwan.
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16
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Mondal S, Ghosh S. Liposome-Mediated Anti-Viral Drug Delivery Across Blood-Brain Barrier: Can Lipid Droplet Target Be Game Changers? Cell Mol Neurobiol 2023; 44:9. [PMID: 38123863 DOI: 10.1007/s10571-023-01443-4] [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: 07/18/2023] [Accepted: 12/02/2023] [Indexed: 12/23/2023]
Abstract
Lipid droplets (LDs) are subcellular organelles secreted from the endoplasmic reticulum (ER) that play a major role in lipid homeostasis. Recent research elucidates additional roles of LDs in cellular bioenergetics and innate immunity. LDs activate signaling cascades for interferon response and secretion of pro-inflammatory cytokines. Since balanced lipid homeostasis is critical for neuronal health, LDs play a crucial role in neurodegenerative diseases. RNA viruses enhance the secretion of LDs to support various phases of their life cycle in neurons which further leads to neurodegeneration. Targeting the excess LD formation in the brain could give us a new arsenal of antiviral therapeutics against neuroviruses. Liposomes are a suitable drug delivery system that could be used for drug delivery in the brain by crossing the Blood-Brain Barrier. Utilizing this, various pharmacological inhibitors and non-coding RNAs can be delivered that could inhibit the biogenesis of LDs or reduce their sizes, reversing the excess lipid-related imbalance in neurons. Liposome-Mediated Antiviral Drug Delivery Across Blood-Brain Barrier. Developing effective antiviral drug is challenging and it doubles against neuroviruses that needs delivery across the Blood-Brain Barrier (BBB). Lipid Droplets (LDs) are interesting targets for developing antivirals, hence targeting LD formation by drugs delivered using Liposomes can be game changers.
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Affiliation(s)
- Sourav Mondal
- CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata, West Bengal, 700032, India
| | - Sourish Ghosh
- CSIR-Indian Institute of Chemical Biology, 4 Raja S.C. Mullick Road, Jadavpur, Kolkata, West Bengal, 700032, India.
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17
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Ding Z, Song H, Wang F. Role of lipins in cardiovascular diseases. Lipids Health Dis 2023; 22:196. [PMID: 37964368 PMCID: PMC10644651 DOI: 10.1186/s12944-023-01961-6] [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: 08/27/2023] [Accepted: 11/01/2023] [Indexed: 11/16/2023] Open
Abstract
Lipin family members in mammals include lipins 1, 2, and 3. Lipin family proteins play a crucial role in lipid metabolism due to their bifunctionality as both transcriptional coregulators and phosphatidate phosphatase (PAP) enzymes. In this review, we discuss the structural features, expression patterns, and pathophysiologic functions of lipins, emphasizing their direct as well as indirect roles in cardiovascular diseases (CVDs). Elucidating the regulation of lipins facilitates a deeper understanding of the roles of lipins in the processes underlying CVDs. The activity of lipins is modulated at various levels, e.g., in the form of the transcription of genes, post-translational modifications, and subcellular protein localization. Because lipin characteristics are undergoing progressive clarification, further research is necessitated to then actuate the investigation of lipins as viable therapeutic targets in CVDs.
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Affiliation(s)
- Zerui Ding
- The Endocrinology Department of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Hongyu Song
- The Endocrinology Department of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Xiangya School of Medicine, Central South University, Changsha, 410013, China
| | - Fang Wang
- The Endocrinology Department of the Third Xiangya Hospital, Central South University, Changsha, 410013, China.
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18
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Talukdar PD, Chatterji U. Transcriptional co-activators: emerging roles in signaling pathways and potential therapeutic targets for diseases. Signal Transduct Target Ther 2023; 8:427. [PMID: 37953273 PMCID: PMC10641101 DOI: 10.1038/s41392-023-01651-w] [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: 04/18/2023] [Revised: 08/27/2023] [Accepted: 09/10/2023] [Indexed: 11/14/2023] Open
Abstract
Specific cell states in metazoans are established by the symphony of gene expression programs that necessitate intricate synergic interactions between transcription factors and the co-activators. Deregulation of these regulatory molecules is associated with cell state transitions, which in turn is accountable for diverse maladies, including developmental disorders, metabolic disorders, and most significantly, cancer. A decade back most transcription factors, the key enablers of disease development, were historically viewed as 'undruggable'; however, in the intervening years, a wealth of literature validated that they can be targeted indirectly through transcriptional co-activators, their confederates in various physiological and molecular processes. These co-activators, along with transcription factors, have the ability to initiate and modulate transcription of diverse genes necessary for normal physiological functions, whereby, deregulation of such interactions may foster tissue-specific disease phenotype. Hence, it is essential to analyze how these co-activators modulate specific multilateral processes in coordination with other factors. The proposed review attempts to elaborate an in-depth account of the transcription co-activators, their involvement in transcription regulation, and context-specific contributions to pathophysiological conditions. This review also addresses an issue that has not been dealt with in a comprehensive manner and hopes to direct attention towards future research that will encompass patient-friendly therapeutic strategies, where drugs targeting co-activators will have enhanced benefits and reduced side effects. Additional insights into currently available therapeutic interventions and the associated constraints will eventually reveal multitudes of advanced therapeutic targets aiming for disease amelioration and good patient prognosis.
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Affiliation(s)
- Priyanka Dey Talukdar
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India
| | - Urmi Chatterji
- Cancer Research Laboratory, Department of Zoology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata, 700019, West Bengal, India.
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19
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Yao R, Wang M, Zhao Y, Ji Q, Feng X, Bai L, Bao L, Wang Y, Hao H, Li X, Wang Z. Chlorogenic acid enhances PPARγ-mediated lipogenesis through preventing Lipin 1 nuclear translocation in Staphylococcus aureus-exposed bovine mammary epithelial cells. Biochim Biophys Acta Mol Cell Biol Lipids 2023; 1868:159396. [PMID: 37717905 DOI: 10.1016/j.bbalip.2023.159396] [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: 01/30/2023] [Revised: 09/01/2023] [Accepted: 09/13/2023] [Indexed: 09/19/2023]
Abstract
Chlorogenic acid (CGA) as one of the most ubiquitously dietary polyphenolic compounds, has been reported to have various antimicrobial effects and exhibit strong anti-inflammatory ability. Staphylococcus aureus is a gram-positive bacterium that can induce mastitis. However, the mechanism through which S. aureus infection affects lipid synthesis and whether CGA have protective effect on S. aureus reduced lipid synthesis is not fully understood. In this study, the internalization of S. aureus reduced intracellular lipid droplet formation, decreased the levels of intracellular triacylglycerol, total cholesterol and 7 types of fatty acid and downregulated the expression of lipogenic genes FAS, ACC, and DGAT1 in bovine mammary epithelial cells (BMECs). In addition, we found that S. aureus intracellular infection attenuated mTORC1 activation resulting in Lipin 1 nuclear localization. Remarkablely, S. aureus infection-mediated repression of lipid synthesis related to the mTORC1 signaling and Lipin 1 nuclear localization can be alleviated by CGA. Thus, our findings provide a novel mechanism by which lipid synthesis is regulated under S. aureus infection and the protective effects of CGA on lipid synthesis in BMECs.
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Affiliation(s)
- Ruiyuan Yao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010110, China
| | - Manshulin Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Yue Zhao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Qiang Ji
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Xue Feng
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; Hohhot No. 1 High School, Hohhot 010030, China
| | - Linfeng Bai
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Lili Bao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; School of Basic Medical Science, Inner Mongolia Medical University, Hohhot 010110, China
| | - Yanfeng Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China
| | - Huifang Hao
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
| | - Xihe Li
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China; Research Center for Animal Genetic Resources of Mongolia Plateau, Inner Mongolia University, Hohhot 010070, China; Inner Mongolia SaiKexing Institute of Breeding and Reproductive Biotechnology in Domestic Animal, Hohhot 011517, China.
| | - Zhigang Wang
- State Key Laboratory of Reproductive Regulation & Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot 010070, China.
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20
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Bamgbose TT, Schilke RM, Igiehon OO, Nkadi EH, Custis D, Bharrhan S, Schwarz B, Bohrnsen E, Bosio CM, Scott RS, Yurdagul A, Finck BN, Woolard MD. Lipin-1 restrains macrophage lipid synthesis to promote inflammation resolution. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.23.563587. [PMID: 37961352 PMCID: PMC10634750 DOI: 10.1101/2023.10.23.563587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Macrophages are critical to maintaining and restoring tissue homeostasis during inflammation. The lipid metabolic state of macrophages influences their function, but a deeper understanding of how lipid metabolism is regulated in pro-resolving macrophage responses is needed. Lipin-1 is a phosphatidic acid phosphatase with a transcriptional coregulatory activity (TC) that regulates lipid metabolism. We previously demonstrated that lipin-1 supports pro-resolving macrophage responses, and here, myeloid-associated lipin-1 is required for inflammation resolution, yet how lipin-1-regulated cellular mechanisms promote macrophage pro-resolution responses is unknown. We demonstrated that the loss of lipin-1 in macrophages led to increased free fatty acid, neutral lipid, and ceramide content and increased phosphorylation of acetyl-CoA carboxylase. The inhibition of the first step of lipid synthesis and transport of citrate from the mitochondria in macrophages reduced lipid content and restored efferocytosis and inflammation resolution in lipin-1mKO macrophages and mice. Our findings suggest macrophage-associated lipin-1 restrains lipid synthesis, promoting pro-resolving macrophage function in response to pro-resolving stimuli.
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Affiliation(s)
- Temitayo T. Bamgbose
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Robert M. Schilke
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Oluwakemi O. Igiehon
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Ebubechukwu H. Nkadi
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - David Custis
- Research Core Facility, Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Sushma Bharrhan
- Center for Applied Immunology and Pathological Processes (CAIPP), Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Benjamin Schwarz
- Proteins & Chemistry Section, Research and Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Disease, Hamilton, MT
| | - Eric Bohrnsen
- Proteins & Chemistry Section, Research and Technologies Branch, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Disease, Hamilton, MT
| | - Catharine M. Bosio
- Immunity to Pulmonary Pathogens Section, Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Disease, Hamilton, MT
| | - Rona S. Scott
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
- Center for Applied Immunology and Pathological Processes (CAIPP), Louisiana State University Health Sciences Center, Shreveport, LA, United States
| | - Arif Yurdagul
- Department of Molecular and Cellular Physiology, Louisiana State University Health Shreveport, Shreveport, LA, United States
| | - Brian N. Finck
- Division of Nutritional Sciences and Obesity Medicine, Washington University School of Medicine, St. Louis, MO, United States
| | - Matthew D. Woolard
- Department of Microbiology and Immunology, Louisiana State University Health Sciences Center, Shreveport, LA, United States
- Center for Applied Immunology and Pathological Processes (CAIPP), Louisiana State University Health Sciences Center, Shreveport, LA, United States
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21
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Prabakaran AD, McFarland K, Miz K, Durumutla HB, Piczer K, El Abdellaoui Soussi F, Latimer H, Werbrich C, Blair NS, Millay DP, Prideaux B, Finck BN, Quattrocelli M. Glucocorticoid intermittence coordinates rescue of energy and mass in aging-related sarcopenia through the myocyte-autonomous PGC1alpha-Lipin1 transactivation. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.16.562573. [PMID: 37905062 PMCID: PMC10614926 DOI: 10.1101/2023.10.16.562573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
Sarcopenia burdens the elderly population through loss of muscle energy and mass, yet treatments to functionally rescue both parameters are missing. The glucocorticoid prednisone remodels muscle metabolism based on frequency of intake, but its mechanisms in sarcopenia are unknown. We found that once-weekly intermittent prednisone rescued muscle quality in aged 24-month-old mice to levels comparable to young 4-month-old mice. We discovered an age- and sex-independent glucocorticoid receptor transactivation program in muscle encompassing PGC1alpha and its co-factor Lipin1. Treatment coordinately improved mitochondrial abundance through isoform 1 and muscle mass through isoform 4 of the myocyte-specific PGC1alpha, which was required for the treatment-driven increase in carbon shuttling from glucose oxidation to amino acid biogenesis. We also probed the myocyte-specific Lipin1 as non-redundant factor coaxing PGC1alpha upregulation to the stimulation of both oxidative and anabolic capacities. Our study unveils an aging-resistant druggable program in myocytes to coordinately rescue energy and mass in sarcopenia.
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Affiliation(s)
- Ashok Daniel Prabakaran
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Kevin McFarland
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Karen Miz
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Hima Bindu Durumutla
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Kevin Piczer
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Fadoua El Abdellaoui Soussi
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Hannah Latimer
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Cole Werbrich
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - N. Scott Blair
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Douglas P Millay
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Brendan Prideaux
- Department of Neuroscience, Cell Biology, and Anatomy, University of Texas Medical Branch (UTMB), Galveston, TX, USA
| | - Brian N Finck
- Department of Medicine, Center for Human Nutrition, Washington University in St Louis, MO, USA
| | - Mattia Quattrocelli
- Molecular Cardiovascular Biology, Heart Institute, Cincinnati Children’s Hospital Medical Center and Dept. Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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22
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Beil J, Perner J, Pfaller L, Gérard MA, Piaia A, Doelemeyer A, Wasserkrug Naor A, Martin L, Piequet A, Dubost V, Chibout SD, Moggs J, Terranova R. Unaltered hepatic wound healing response in male rats with ancestral liver injury. Nat Commun 2023; 14:6353. [PMID: 37816736 PMCID: PMC10564731 DOI: 10.1038/s41467-023-41998-w] [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: 11/09/2022] [Accepted: 09/26/2023] [Indexed: 10/12/2023] Open
Abstract
The possibility that ancestral environmental exposure could result in adaptive inherited effects in mammals has been long debated. Numerous rodent models of transgenerational responses to various environmental factors have been published but due to technical, operational and resource burden, most still await independent confirmation. A previous study reported multigenerational epigenetic adaptation of the hepatic wound healing response upon exposure to the hepatotoxicant carbon tetrachloride (CCl4) in male rats. Here, we comprehensively investigate the transgenerational effects by repeating the original CCl4 multigenerational study with increased power, pedigree tracing, F2 dose-response and suitable randomization schemes. Detailed pathology evaluations do not support adaptive phenotypic suppression of the hepatic wound healing response or a greater fitness of F2 animals with ancestral liver injury exposure. However, transcriptomic analyses identified genes whose expression correlates with ancestral liver injury, although the biological relevance of this apparent transgenerational transmission at the molecular level remains to be determined. This work overall highlights the need for independent evaluation of transgenerational epigenetic inheritance paradigms in mammals.
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Affiliation(s)
- Johanna Beil
- Novartis, Biomedical Research, Basel, Switzerland
| | | | - Lena Pfaller
- Novartis, Biomedical Research, Basel, Switzerland
| | | | | | | | | | - Lori Martin
- Novartis, Biomedical Research, East-Hanover, NJ, USA
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23
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Xu S, Xi J, Wu T, Wang Z. The Role of Adipocyte Endoplasmic Reticulum Stress in Obese Adipose Tissue Dysfunction: A Review. Int J Gen Med 2023; 16:4405-4418. [PMID: 37789878 PMCID: PMC10543758 DOI: 10.2147/ijgm.s428482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
Adipose tissue dysfunction plays an important role in metabolic diseases associated with chronic inflammation, insulin resistance and lipid ectopic deposition in obese patients. In recent years, it has been found that under the stimulation of adipocyte endoplasmic reticulum stress (ERS), the over-activated ER unfolded protein response (UPR) exacerbates the inflammatory response of adipose tissue by interfering with the normal metabolism of adipose tissue, promotes the secretion of adipokines, and affects the browning and thermogenic pathways of adipose tissue, ultimately leading to the manifestation of metabolic syndrome such as ectopic lipid deposition and disorders of glucolipid metabolism in obese patients. This paper mainly summarizes the relationship between adipocyte ERS and obese adipose tissue dysfunction and provides an overview of the mechanisms by which ERS induces metabolic disorders such as catabolism, thermogenesis and inflammation in obese adipose tissue through the regulation of molecules and pathways such as NF-κB, ADPN, STAMP2, LPIN1, TRIP-Br2, NF-Y and SIRT2 and briefly describes the current mechanisms targeting adipocyte endoplasmic reticulum stress to improve obesity and provide ideas for intervention and treatment of obese adipose tissue dysfunction.
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Affiliation(s)
- Shengjie Xu
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, People’s Republic of China
| | - Jiaqiu Xi
- Shandong University of Traditional Chinese Medicine, Jinan, 250000, People’s Republic of China
| | - Tao Wu
- The First Clinical College, Shandong University of Traditional Chinese Medicine, Jinan, 250000, People’s Republic of China
| | - Zhonglin Wang
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, 250014, People’s Republic of China
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24
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Un Nisa M, Gillani SQ, Nabi N, Sarwar Z, Reshi I, Bhat SA, Andrabi S. Lipin-1 stability and its adipogenesis functions are regulated in contrasting ways by AKT1 and LKB1. J Cell Commun Signal 2023; 17:689-704. [PMID: 36380131 PMCID: PMC10409976 DOI: 10.1007/s12079-022-00708-9] [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: 08/03/2022] [Accepted: 10/24/2022] [Indexed: 11/16/2022] Open
Abstract
Lipin-1 is a protein that plays a critical role in many cellular functions. At molecular level, it acts as a phosphatidic acid phosphohydrolase and a transcriptional coactivator. The functions of lipin-1 are largely dependent upon its subcellular localization, post-translational modifications like phosphorylation and acetylation, and also on its interaction with other proteins such as 14-3-3. However, the kinases and phosphatases that are responsible for these post translational modifications are not entirely known. Using bioinformatics and other biochemical approaches, we demonstrate lipin-1 as a novel target for AKT1 and LKB1. While AKT1 stabilizes lipin-1, LKB1 causes its degradation. Interestingly, our findings further show that lipin-1 enhances AKT1 activity as can be seen by increased phosphorylation of the substrates of AKT1. Taken together, our results suggest that lipin-1 plays an important role in the regulation of PI3K-AKT-mTOR pathway, which is dysregulated in majority of cancers. Therefore, understating the role of lipin-1 may provide new and important insights into the regulation and functions of the PI3K-mTOR pathway, which is one of the major targets for anti-cancer drug development strategies.
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Affiliation(s)
- Misbah Un Nisa
- Department of Biochemistry, University of Kashmir, Srinagar, 190006, India
| | | | - Nusrat Nabi
- Department of Biochemistry, University of Kashmir, Srinagar, 190006, India
| | - Zarka Sarwar
- Department of Biochemistry, University of Kashmir, Srinagar, 190006, India
| | - Irfana Reshi
- Department of Biotechnology, University of Kashmir, Srinagar, 190006, India
| | - Sameer Ahmed Bhat
- Department of Biotechnology, University of Kashmir, Srinagar, 190006, India
| | - Shaida Andrabi
- Department of Biochemistry, University of Kashmir, Srinagar, 190006, India.
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25
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Nguyen YDH, Yoshida H, Tran TM, Kamei K. Lipin knockdown in pan-neuron of Drosophila induces reduction of lifespan, deficient locomotive behavior, and abnormal morphology of motor neuron. Neuroreport 2023; 34:629-637. [PMID: 37470742 PMCID: PMC10344432 DOI: 10.1097/wnr.0000000000001936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
The Lipin family is evolutionarily conserved among insects and mammals, and its crucial roles in lipid synthesis and homeostatic control of energy balance have been well documented. This study investigated the function of Lipin in neuronal function and neurodegeneration. The GAL4/UAS system was used to knock down Lipin in the nervous system of Drosophila and investigate its behavioral and cellular phenotypes. The neuromuscular junction (NMJ) morphology was detected by immunostaining. Moreover, triacylglycerol and ATP levels were analyzed by using assay Kit. This study found that Lipin is localized almost in the cytoplasm of neurons in the brain lobe and ventral nerve cord, which are part of the central nervous system (CNS) of Drosophila melanogaster. Lipin knockdown larvae exhibit decreased locomotor activity, aberrant morphology of motor nerve terminals at NMJs, and reduced number and size of lipid droplets in the CNS. Furthermore, neuron-specific knockdown of Lipin leads to locomotor defects and a shortened lifespan, accompanied by a reduction in ATP levels in the adult stage. These results indicate that Lipin plays a crucial role in the CNS of Drosophila.
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Affiliation(s)
- Yen D H Nguyen
- Department of Functional Chemistry, Kyoto Institute of Technology
| | - Hideki Yoshida
- Department of Applied Biology, Kyoto Institute of Technology, Kyoto, Japan
| | - Thanh Men Tran
- Department of Biology, College of Natural Sciences, Cantho University, Cantho City, Vietnam
| | - Kaeko Kamei
- Department of Functional Chemistry, Kyoto Institute of Technology
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26
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Sanford JD, Franklin D, Grois GA, Jin A, Zhang Y. Carnitine o-octanoyltransferase is a p53 target that promotes oxidative metabolism and cell survival following nutrient starvation. J Biol Chem 2023; 299:104908. [PMID: 37307919 PMCID: PMC10339192 DOI: 10.1016/j.jbc.2023.104908] [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: 11/23/2022] [Revised: 05/11/2023] [Accepted: 06/01/2023] [Indexed: 06/14/2023] Open
Abstract
Whereas it is known that p53 broadly regulates cell metabolism, the specific activities that mediate this regulation remain partially understood. Here, we identified carnitine o-octanoyltransferase (CROT) as a p53 transactivation target that is upregulated by cellular stresses in a p53-dependent manner. CROT is a peroxisomal enzyme catalyzing very long-chain fatty acids conversion to medium chain fatty acids that can be absorbed by mitochondria during β-oxidation. p53 induces CROT transcription through binding to consensus response elements in the 5'-UTR of CROT mRNA. Overexpression of WT but not enzymatically inactive mutant CROT promotes mitochondrial oxidative respiration, while downregulation of CROT inhibits mitochondrial oxidative respiration. Nutrient depletion induces p53-dependent CROT expression that facilitates cell growth and survival; in contrast, cells deficient in CROT have blunted cell growth and reduced survival during nutrient depletion. Together, these data are consistent with a model where p53-regulated CROT expression allows cells to be more efficiently utilizing stored very long-chain fatty acids to survive nutrient depletion stresses.
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Affiliation(s)
- Jack D Sanford
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Curriculum in Genetics and Molecular Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Derek Franklin
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Gabriella A Grois
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Aiwen Jin
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA
| | - Yanping Zhang
- Department of Radiation Oncology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Lineberger Comprehensive Cancer Center, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Curriculum in Genetics and Molecular Biology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA; Department of Pharmacology, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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27
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Yeganeh M, March K, Jones C, Ho G, Selby KA, Chanoine JP, Stockler S, Salvarinova R, Horvath G, Brunel-Guitton C. Use of dexamethasone in acute rhabdomyolysis in LPIN1 deficiency. Mol Genet Metab Rep 2023; 35:100961. [PMID: 36941958 PMCID: PMC10024045 DOI: 10.1016/j.ymgmr.2023.100961] [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: 01/06/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 03/12/2023] Open
Abstract
Introduction LPIN1 deficiency is an autosomal recessive form of early childhood recurrent severe rhabdomyolysis. Although not completely lucid yet, LPIN1 has been shown to modulate endosomal-related pro-inflammatory responses via peroxisome proliferator-activated receptor α (PPARα) and PPARγ coactivator 1α (PGC-1α). Treatment with anti-inflammatory agents such as dexamethasone has been proposed to improve the outcome. Case We report a male toddler with recurrent episodes of complicated rhabdomyolysis, requiring prolonged intensive care unit admissions. Whole exome sequencing revealed a common homozygous 1.7 kb intragenic deletion in LPIN1. Despite optimal metabolic cares, the patient presented with an extremely high CK level where he benefited from intravenous dexamethasone (0.6 mg/Kg/day) for a period of 6 days. Results Dexamethasone administration shortened the course of active rhabdomyolysis, intensive care admission and rehabilitation. It also prevented rhabdomyolysis-related complications such as kidney injury and compartment syndrome. Conclusion Our patient showed a favorable response to parenteral dexamethasone, in addition to hyperhydration with IV fluids, sufficient calorie intake, and restricted dietary fat. The improvement with corticosteroids suggests an uncontrolled inflammatory response as the pathophysiology of LPIN1 deficiency.
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Affiliation(s)
- Mehdi Yeganeh
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Kaitlin March
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Catherine Jones
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Gloria Ho
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Kathryn A. Selby
- Division of Neurology, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver, V6H 3N1, BC, Canada
| | - Jean-Pierre Chanoine
- Division of Endocrinology, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver, V6H 3N1, BC, Canada
| | - Sylvia Stockler
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Ramona Salvarinova
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Gabriella Horvath
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
| | - Catherine Brunel-Guitton
- Division of Biochemical Genetics, Department of Pediatrics, University of British Columbia, BC Children's Hospital, Vancouver V6H 3N1, BC, Canada
- Corresponding author.
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Renard P, Caccavelli L, Legendre A, Tuchmann-Durand C, Balakirouchenane D, Blanchet B, Narjoz C, Straube M, Hubas A, Garros A, Mention K, Bednarek N, Goudin N, Broissand C, Schlatter J, Cisternino S, Cagnard N, van Endert P, Diana J, de Calbiac H, de Lonlay P. Hydroxychloroquine sulfate: A novel treatment for lipin-1 deficiency? Biomed Pharmacother 2023; 163:114813. [PMID: 37150031 DOI: 10.1016/j.biopha.2023.114813] [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: 03/09/2023] [Revised: 04/26/2023] [Accepted: 04/30/2023] [Indexed: 05/09/2023] Open
Abstract
BACKGROUND Lipin-1 deficiency is a life-threatening disease that causes severe rhabdomyolysis (RM) and chronic symptoms associated with oxidative stress. In the absence of treatment, Hydroxychloroquine sulfate (HCQ) was administered to patients off label use on a compassionate basis in order to improve their physical conditions. METHODS Eleven patients with LPIN1 mutations were treated with HCQ. Clinical and biological efficacy and tolerance were assessed, including pain and quality of life, physical capacities, cardiopulmonary parameters, creatine kinase levels and plasma proinflammatory cytokines. To explore a dose-dependent effect of HCQ, primary myoblasts from 4 patients were incubated with various HCQ concentrations in growth medium (GM) or during starvation (EBSS medium) to investigate autophagy and oxidative stress. FINDINGS Under HCQ treatment, patient physical capacities improved. Abnormal cardiac function and peripheral muscle adaptation to exercise were normalized. However, two patients who had the highest mean blood HCQ concentrations experienced RM. We hypothesized that HCQ exerts deleterious effects at high concentrations by blocking autophagy, and beneficial effects on oxidative stress at low concentrations. We confirmed in primary myoblasts from 4 patients that high in vitro HCQ concentration (10 µM) but not low concentration (1 µM and 0.1 µM) induced autophagy blockage by modifying endolysosomal pH. Low HCQ concentration (1 µM) prevented reactive oxygen species (ROS) and oxidized DNA accumulation in myoblasts during starvation. INTERPRETATION HCQ improves the condition of patients with lipin-1 deficiency, but at low concentrations. In vitro, 1 µM HCQ decreases oxidative stress in myoblasts whereas higher concentrations have a deleterious effect by blocking autophagy.
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Affiliation(s)
- Perrine Renard
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France
| | - Laure Caccavelli
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France; Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Institut Imagine, Filière G2M, MetabERN, F-75015 Paris, France
| | - Antoine Legendre
- Centre de référence Malformations Cardiaques Congénitales Complexes M3C - Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France
| | - Caroline Tuchmann-Durand
- Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Institut Imagine, Filière G2M, MetabERN, F-75015 Paris, France; Institut Imagine, Centre d'Investigation Clinique pour les Thérapies innovantes, Département de Biothérapie, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France
| | - David Balakirouchenane
- Département de pharmacocinétique et pharmacochimie, Centre Hospitalier Universitaire Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), CARPEM, F-75014 Paris, France
| | - Benoit Blanchet
- Département de pharmacocinétique et pharmacochimie, Centre Hospitalier Universitaire Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), CARPEM, F-75014 Paris, France; Université Paris Cité, PRES Sorbonne Paris Cité, CARPEM, Faculté de Pharmacie, INSERM U-1268 / CNRS UMR-8038, FR-750006 Paris, France
| | - Céline Narjoz
- Service de Biochimie, Hôpital Universitaire Européen Georges Pompidou, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France
| | - Marjolène Straube
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France; Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Institut Imagine, Filière G2M, MetabERN, F-75015 Paris, France
| | - Arnaud Hubas
- Service de biochimie et Génétique Moléculaire, Laboratoire de culture cellulaire, Hôpital Universitaire Cochin, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75014 Paris, France
| | - Alexa Garros
- Centre de compétence des maladies héréditaires du métabolisme, Hôpital Universitaire Grenoble Alpes, Filière G2M, Grenoble, France
| | - Karine Mention
- Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Jeanne de Flandre, Filière G2M, MetabERN, Lille, France
| | - Nathalie Bednarek
- Centre de compétence des maladies héréditaires du métabolisme, Hôpital Universitaire, Filière G2M, Reims, France
| | - Nicolas Goudin
- Cell Imaging & Flow Cytometry Core Facilities, Structure Fédérative de Recherche Necker, INSERM US24/CNRS UMS3633, Paris, France
| | - Christine Broissand
- Service de Pharmacie, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France
| | - Joel Schlatter
- Service de Pharmacie, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France
| | - Salvatore Cisternino
- Service de Pharmacie, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), F-75015 Paris, France; Université Paris Cité, Optimisation Thérapeutique en Neuropsychopharmacologie, INSERM UMRS-1144, F-75006 Paris, France
| | - Nicolas Cagnard
- Université Paris Cité, Bioinformatiques, SFR Necker, INSERM US-24 / CNRS UAR-3633, F-75015 Paris, France
| | - Peter van Endert
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France; Service Immunologie Biologique, AP-HP, Hôpital Universitaire Necker-Enfants Malades, F-75015 Paris, France
| | - Julien Diana
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France
| | - Hortense de Calbiac
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France; Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Institut Imagine, Filière G2M, MetabERN, F-75015 Paris, France
| | - Pascale de Lonlay
- Université Paris Cité, INSERM, CNRS, Institut Necker Enfants Malades, F-75015 Paris, France; Centre de référence des maladies héréditaires du métabolisme, Hôpital Universitaire Necker-Enfants Malades, Assistance Publique-Hôpitaux de Paris (AP-HP), Institut Imagine, Filière G2M, MetabERN, F-75015 Paris, France.
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Kasano-Camones CI, Takizawa M, Ohshima N, Saito C, Iwasaki W, Nakagawa Y, Fujitani Y, Yoshida R, Saito Y, Izumi T, Terawaki SI, Sakaguchi M, Gonzalez FJ, Inoue Y. PPARα activation partially drives NAFLD development in liver-specific Hnf4a-null mice. J Biochem 2023; 173:393-411. [PMID: 36779417 PMCID: PMC10433406 DOI: 10.1093/jb/mvad005] [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: 09/19/2022] [Accepted: 01/13/2023] [Indexed: 01/24/2023] Open
Abstract
HNF4α regulates various genes to maintain liver function. There have been reports linking HNF4α expression to the development of non-alcoholic fatty liver disease (NAFLD) and non-alcoholic steatohepatitis. In this study, liver-specific Hnf4a-deficient mice (Hnf4aΔHep mice) developed hepatosteatosis and liver fibrosis, and they were found to have difficulty utilizing glucose. In Hnf4aΔHep mice, the expression of fatty acid oxidation-related genes, which are PPARα target genes, was increased in contrast to the decreased expression of PPARα, suggesting that Hnf4aΔHep mice take up more lipids in the liver instead of glucose. Furthermore, Hnf4aΔHep/Ppara-/- mice, which are simultaneously deficient in HNF4α and PPARα, showed improved hepatosteatosis and fibrosis. Increased C18:1 and C18:1/C18:0 ratio was observed in the livers of Hnf4aΔHep mice, and the transactivation of PPARα target gene was induced by C18:1. When the C18:1/C18:0 ratio was close to that of Hnf4aΔHep mouse liver, a significant increase in transactivation was observed. In addition, the expression of Pgc1a, a coactivator of PPARs, was increased, suggesting that elevated C18:1 and Pgc1a expression could contribute to PPARα activation in Hnf4aΔHep mice. These insights may contribute to the development of new diagnostic and therapeutic approaches for NAFLD by focusing on the HNF4α and PPARα signaling cascade.
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Affiliation(s)
- Carlos Ichiro Kasano-Camones
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Masayuki Takizawa
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Noriyasu Ohshima
- Department of Biochemistry, Graduate School of Medicine, Gunma University, Maebashi 371-8511, Japan
| | - Chinatsu Saito
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Wakana Iwasaki
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Yuko Nakagawa
- Laboratory of Developmental Biology and Metabolism, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma 371-8512, Japan
| | - Yoshio Fujitani
- Laboratory of Developmental Biology and Metabolism, Institute for Molecular and Cellular Regulation, Gunma University, Maebashi, Gunma 371-8512, Japan
| | - Ryo Yoshida
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Yoshifumi Saito
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Takashi Izumi
- Department of Biochemistry, Graduate School of Medicine, Gunma University, Maebashi 371-8511, Japan
- Faculty of Health Care, Teikyo Heisei University, Tokyo 170-8445, Japan
| | - Shin-Ichi Terawaki
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
| | - Masakiyo Sakaguchi
- Department of Cell Biology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
| | - Frank J Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20852, USA
| | - Yusuke Inoue
- Laboratory of Metabolism, Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu, Gunma 376-8515, Japan
- Gunma University Center for Food Science and Wellness, Maebashi, Gunma 371-8510, Japan
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30
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Chen W, Mehlkop O, Scharn A, Nolte H, Klemm P, Henschke S, Steuernagel L, Sotelo-Hitschfeld T, Kaya E, Wunderlich CM, Langer T, Kononenko NL, Giavalisco P, Brüning JC. Nutrient-sensing AgRP neurons relay control of liver autophagy during energy deprivation. Cell Metab 2023; 35:786-806.e13. [PMID: 37075752 PMCID: PMC10173804 DOI: 10.1016/j.cmet.2023.03.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/01/2023] [Accepted: 03/27/2023] [Indexed: 04/21/2023]
Abstract
Autophagy represents a key regulator of aging and metabolism in sensing energy deprivation. We find that fasting in mice activates autophagy in the liver paralleled by activation of hypothalamic AgRP neurons. Optogenetic and chemogenetic activation of AgRP neurons induces autophagy, alters phosphorylation of autophagy regulators, and promotes ketogenesis. AgRP neuron-dependent induction of liver autophagy relies on NPY release in the paraventricular nucleus of the hypothalamus (PVH) via presynaptic inhibition of NPY1R-expressing neurons to activate PVHCRH neurons. Conversely, inhibiting AgRP neurons during energy deprivation abrogates induction of hepatic autophagy and rewiring of metabolism. AgRP neuron activation increases circulating corticosterone concentrations, and reduction of hepatic glucocorticoid receptor expression attenuates AgRP neuron-dependent activation of hepatic autophagy. Collectively, our study reveals a fundamental regulatory principle of liver autophagy in control of metabolic adaptation during nutrient deprivation.
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Affiliation(s)
- Weiyi Chen
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Oliver Mehlkop
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Alexandra Scharn
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Hendrik Nolte
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Paul Klemm
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Sinika Henschke
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Lukas Steuernagel
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Tamara Sotelo-Hitschfeld
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Ecem Kaya
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Claudia Maria Wunderlich
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany
| | - Thomas Langer
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Natalia L Kononenko
- Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Physiology and Pathophysiology, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Patrick Giavalisco
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Jens Claus Brüning
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; National Center for Diabetes Research (DZD), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany.
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Kostić M, Korićanac G, Tepavčević S, Stanišić J, Romić S, Ćulafić T, Ivković T, Stojiljković M. Low-Intensity Exercise Affects Cardiac Fatty Acid Oxidation by Increasing the Nuclear Content of PPARα, FOXO1, and Lipin1 in Fructose-Fed Rats. Metab Syndr Relat Disord 2023; 21:122-131. [PMID: 36625880 DOI: 10.1089/met.2022.0078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background and Aim: Excessive fructose consumption along with a sedentary lifestyle provokes metabolic disorders and cardiovascular diseases. Fructose overload causes cardiac insulin resistance and increases reliance on fatty acid (FA) uptake and catabolism. The cardiometabolic benefits of exercise training have long been appreciated. The goal of the presented study is to shed a new light to the preventive role of exercise training on cardiac lipid metabolism in fructose-fed rats. Methods: Male Wistar rats were divided into control (C), sedentary fructose (F), and exercised fructose (EF) groups. Fructose was given as a 10% fructose solution in drinking water for 9 weeks. Low-intensity exercise training was applied for 9 weeks. The protein expression and subcellular localization of Lipin1, peroxisome proliferator-activated receptor α (PPARα), and peroxisome proliferator-activated receptor-γ coactivator 1 α (PGC1) were analyzed in the heart using Western blot. Cardiac forkhead box transcription factor 1 (FOXO1) and sirtuin 1 (SIRT1) protein levels were also evaluated. Gene expression of long-chain acyl-CoA dehydrogenase was analyzed by quantitative polymerase chain reaction. Results: Exercise training has augmented the expression of main regulators of FA oxidation in the heart and achieves its effect by increasing the nuclear content of PPARα, Lipin1, and FOXO1 compared with the fructose group (P = 0.0422, P = 0.000045, P = 0.00958, respectively). In addition, Lipin1, FOXO1, and SIRT1 were increased in nuclear extract after exercise compared with the control group (P = 0.000043, P = 0.0417, P = 0.0329, respectively). In cardiac lysate, low-intensity exercise caused significantly increased protein level of PPARα, PGC1, FOXO1, and SIRT1 compared with control (P = 0.0377, P = 0.0275, P = 0.0096, P = 0.0282, respectively) and PGC1 level compared with the fructose group (P = 0.0417). Conclusion: The obtained results imply that the heart with a metabolic burden additionally relies on FA as an energy substrate after low-intensity running.
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Affiliation(s)
- Milan Kostić
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Goran Korićanac
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Snežana Tepavčević
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jelena Stanišić
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Snježana Romić
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tijana Ćulafić
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Ivković
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Mojca Stojiljković
- Department for Molecular Biology and Endocrinology, "Vinča" Institute of Nuclear Sciences-National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Jama A, Alshudukhi AA, Burke S, Dong L, Kamau JK, Voss AA, Ren H. Lipin1 plays complementary roles in myofibre stability and regeneration in dystrophic muscles. J Physiol 2023; 601:961-978. [PMID: 36715084 PMCID: PMC9992338 DOI: 10.1113/jp284085] [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: 11/08/2022] [Accepted: 01/23/2023] [Indexed: 01/31/2023] Open
Abstract
Duchenne muscular dystrophy (DMD) is a severe muscle wasting disorder caused by dystrophin mutations, leading to the loss of sarcolemmal integrity, and resulting in progressive myofibre necrosis and impaired muscle function. Our previous studies suggest that lipin1 is important for skeletal muscle regeneration and myofibre integrity. Additionally, we discovered that mRNA expression levels of lipin1 were significantly reduced in skeletal muscle of DMD patients and the mdx mouse model. To understand the role of lipin1 in dystrophic muscle, we generated dystrophin/lipin1 double knockout (DKO) mice, and compared the limb muscle pathology and function of wild-type B10, muscle-specific lipin1 deficient (lipin1Myf5cKO ), mdx and DKO mice. We found that further knockout of lipin1 in dystrophic muscle exhibited a more severe phenotype characterized by increased necroptosis, fibrosis and exacerbated membrane damage in DKO compared to mdx mice. In barium chloride-induced muscle injury, both lipin1Myf5cKO and DKO showed prolonged regeneration at day 14 post-injection, suggesting that lipin1 is critical for muscle regeneration. In situ contractile function assays showed that lipin1 deficiency in dystrophic muscle led to reduced specific force production. Using a cell culture system, we found that lipin1 deficiency led to elevated expression levels of necroptotic markers and medium creatine kinase, which could be a result of sarcolemmal damage. Most importantly, restoration of lipin1 inhibited the elevation of necroptotic markers in differentiated primary lipin1-deficient myoblasts. Overall, our data suggests that lipin1 plays complementary roles in myofibre stability and muscle function in dystrophic muscles, and overexpression of lipin1 may serve as a potential therapeutic strategy for dystrophic muscles. KEY POINTS: We identified that lipin1 mRNA expression levels are significantly reduced in skeletal muscles of Duchenne muscular dystrophy patients and mdx mice. We found that further depletion of lipin1 in skeletal muscles of mdx mice induces more severe dystrophic phenotypes, including enhanced myofibre sarcolemma damage, muscle necroptosis, inflammation, fibrosis and reduced specific force production. Lipin1 deficiency leads to elevated expression levels of necroptotic markers, whereas restoration of lipin1 inhibits their expression. Our results suggest that lipin1 is functionally complementary to dystrophin in muscle membrane integrity and muscle regeneration.
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Affiliation(s)
- Abdulrahman Jama
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
| | - Abdullah A. Alshudukhi
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
| | - Steve Burke
- Department of Biological Sciences, Wright State University, Dayton, OH, USA
| | - Lixin Dong
- Mumetel LLC, University Technology Park at IIT, Chicago, IL, USA
| | - John Karanja Kamau
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
| | - Andrew Alvin Voss
- Department of Biological Sciences, Wright State University, Dayton, OH, USA
| | - Hongmei Ren
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
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Tuchmann-Durand C, Roda C, Renard P, Mortamet G, Bérat CM, Altenburger L, de Larauz MH, Thevenet E, Cottart CH, Moulin F, Bouchereau J, Brassier A, Arnoux JB, Schiff M, Bednarek N, Lamireau D, Garros A, Mention K, Cano A, Finger L, Pelosi M, Brochet CS, Caccavelli L, Raphalen JH, Renolleau S, Oualha M, de Lonlay P. Systemic corticosteroids for the treatment of acute episodes of rhabdomyolysis in lipin-1-deficient patients. J Inherit Metab Dis 2023. [PMID: 36680547 DOI: 10.1002/jimd.12592] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 01/13/2023] [Accepted: 01/19/2023] [Indexed: 01/22/2023]
Abstract
Mutations in the LPIN1 gene constitute a major cause of severe rhabdomyolysis (RM). The TLR9 activation prompted us to treat patients with corticosteroids in acute conditions. In patients with LPIN1 mutations, RM and at-risk situations that can trigger RM have been treated in a uniform manner. Since 2015, these patients have also received intravenous corticosteroids. We retrospectively compared data on hospital stays by corticosteroid-treated patients vs. patients not treated with corticosteroids. Nineteen patients were hospitalized. The median number of admissions per patient was 21 overall and did not differ when comparing the 10 corticosteroid-treated patients with the 9 patients not treated with corticosteroids. Four patients in the non-corticosteroid group died during a RM (mean age at death: 5.6 years). There were no deaths in the corticosteroid group. The two groups did not differ significantly in the number of RM episodes. However, for the six patients who had RM and occasionally been treated with corticosteroids, the median number of RM episodes was significantly lower when intravenous steroids had been administered. The peak plasma creatine kinase level and the area under the curve were or tended to be higher in patients treated with corticosteroids-even after the exclusion of deceased patients or focusing on the period after 2015. The median length of stay (10 days overall) was significantly longer for corticosteroid-treated patients but was similar after the exclusion of deceased patients. The absence of deaths and the higher severity of RM observed among corticosteroid-treated patients could suggest that corticotherapy is associated with greater survival.
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Affiliation(s)
- Caroline Tuchmann-Durand
- Imagine Institute, Biotherapy Clinical Investigation Center, Biotherapy Department, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Célina Roda
- Université Paris Cité, Health Environmental Risk Assessment (HERA) Team, CRESS, INSERM, INRAE, Paris, France
- Faculté de Pharmacie de Paris, Université Paris Cité, Paris, France
| | - Perrine Renard
- INSERM U1151, Institut Necker Enfants-Malades (INEM), Paris, France
| | - Guillaume Mortamet
- Pediatric Intensive Care Unit, Grenoble Alpes University Hospital, Grenoble, France
| | - Claire-Marine Bérat
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Lucile Altenburger
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Marie Hug de Larauz
- Imagine Institute, Biotherapy Clinical Investigation Center, Biotherapy Department, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Eloise Thevenet
- Imagine Institute, Biotherapy Clinical Investigation Center, Biotherapy Department, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Charles-Henry Cottart
- Faculté de Pharmacie de Paris, Université Paris Cité, Paris, France
- Biochemistry Unit, Biology Department, Assistance Publique Hôpitaux de Paris (AP-HP), Necker-Enfants-Malades University Hospital, Paris, France
| | - Florence Moulin
- Pediatric Intensive Care Unit for, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Juliette Bouchereau
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Anais Brassier
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Jean-Baptiste Arnoux
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Manuel Schiff
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
- Medical School, Université Paris Cité, Paris, France
| | - Nathalie Bednarek
- Intensive Care Unit and Competence Center for Inherited Metabolic Diseases, Reims University Hospital, Reims, France
| | - Delphine Lamireau
- Competence Center for Inherited Metabolic Diseases, Pellegrin University Hospital, Bordeaux, France
| | - Alexa Garros
- Competence Center for Inherited Metabolic Diseases, Grenoble Alpes University Hospital, Grenoble, France
| | - Karine Mention
- Reference Center for Inherited Metabolic Diseases, Jeanne de Flandre Hospital, MetabERN, Lille, France
| | - Aline Cano
- Reference Center for Inherited Metabolic Diseases, La Timone University Hospital, MetabERN, Marseille, France
| | - Lionel Finger
- Biochemistry Unit, Biology Department, Troyes Hospital, Troyes, France
| | - Michele Pelosi
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | | | - Laure Caccavelli
- INSERM U1151, Institut Necker Enfants-Malades (INEM), Paris, France
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
| | - Jean-Herlé Raphalen
- Adult Intensive Care Unit, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
| | - Sylvain Renolleau
- Pediatric Intensive Care Unit for, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
- Medical School, Université Paris Cité, Paris, France
| | - Mehdi Oualha
- Pediatric Intensive Care Unit for, Necker-Enfants-Malades University Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris, France
- Medical School, Université Paris Cité, Paris, France
| | - Pascale de Lonlay
- INSERM U1151, Institut Necker Enfants-Malades (INEM), Paris, France
- Reference Center for Inherited Metabolic Diseases, Necker-Enfants-Malades University Hospital, APHP, Imagine Institute, G2M, MetabERN, Paris, France
- Medical School, Université Paris Cité, Paris, France
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Li J, Kumar S, Miachin K, Bean NL, Halawi O, Lee S, Park J, Pierre TH, Hor JH, Ng SY, Wallace KJ, Rindtorff N, Miller TM, Niehoff ML, Farr SA, Kletzien RF, Colca J, Tanis SP, Chen Y, Griffett K, McCommis KS, Finck BN, Peterson TR. A DUAL MTOR/NAD+ ACTING GEROTHERAPY. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.16.523975. [PMID: 36711589 PMCID: PMC9882180 DOI: 10.1101/2023.01.16.523975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The geroscience hypothesis states that a therapy that prevents the underlying aging process should prevent multiple aging related diseases. The mTOR (mechanistic target of rapamycin)/insulin and NAD+ (nicotinamide adenine dinucleotide) pathways are two of the most validated aging pathways. Yet, it's largely unclear how they might talk to each other in aging. In genome-wide CRISPRa screening with a novel class of N-O-Methyl-propanamide-containing compounds we named BIOIO-1001, we identified lipid metabolism centering on SIRT3 as a point of intersection of the mTOR/insulin and NAD+ pathways. In vivo testing indicated that BIOIO-1001 reduced high fat, high sugar diet-induced metabolic derangements, inflammation, and fibrosis, each being characteristic of non-alcoholic steatohepatitis (NASH). An unbiased screen of patient datasets suggested a potential link between the anti-inflammatory and anti-fibrotic effects of BIOIO-1001 in NASH models to those in amyotrophic lateral sclerosis (ALS). Directed experiments subsequently determined that BIOIO-1001 was protective in both sporadic and familial ALS models. Both NASH and ALS have no treatments and suffer from a lack of convenient biomarkers to monitor therapeutic efficacy. A potential strength in considering BIOIO-1001 as a therapy is that the blood biomarker that it modulates, namely plasma triglycerides, can be conveniently used to screen patients for responders. More conceptually, to our knowledge BIOIO-1001 is a first therapy that fits the geroscience hypothesis by acting on multiple core aging pathways and that can alleviate multiple conditions after they have set in.
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Affiliation(s)
- Jinmei Li
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
- Healthspan Technologies, 4340 Duncan Ave. Suite 265, St. Louis, MO 63110, USA
| | - Sandeep Kumar
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Kirill Miachin
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
| | - Nicholas L. Bean
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
| | - Ornella Halawi
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
| | - Scott Lee
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
| | - JiWoong Park
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Tanya H. Pierre
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Jin-Hui Hor
- Institute of Molecular and Cell Biology (Cell Biology and Therapies Division), A*STAR Research Entities. 61 Biopolis Drive, 138673, Singapore
| | - Shi-Yan Ng
- Institute of Molecular and Cell Biology (Cell Biology and Therapies Division), A*STAR Research Entities. 61 Biopolis Drive, 138673, Singapore
| | | | - Niklas Rindtorff
- LabDAO, c/o MJP PARTNERS, Bahnhofstrasse 20, 6300 Zug, Switzerland
| | - Timothy M. Miller
- Department of Neurology, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Michael L. Niehoff
- Department of Internal Medicine, Division of Geriatric Medicine; Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 S. Grand Blvd, St. Louis, MO 63110, USA. Research and Development, VA Medical Center-St. Louis, 915 N. Grand Blvd. St. Louis, MO 63106, USA
| | - Susan A. Farr
- Department of Internal Medicine, Division of Geriatric Medicine; Department of Pharmacology and Physiology, Saint Louis University School of Medicine, 1402 S. Grand Blvd, St. Louis, MO 63110, USA. Research and Development, VA Medical Center-St. Louis, 915 N. Grand Blvd. St. Louis, MO 63106, USA
| | - Rolf F. Kletzien
- Metabolic Solutions Development Company. 161 E Michigan Ave., 4th Floor Kalamazoo, MI 49007, USA
| | - Jerry Colca
- Metabolic Solutions Development Company. 161 E Michigan Ave., 4th Floor Kalamazoo, MI 49007, USA
| | - Steven P. Tanis
- Metabolic Solutions Development Company. 161 E Michigan Ave., 4th Floor Kalamazoo, MI 49007, USA
| | - Yana Chen
- Department of Medicine, Division of Geriatrics & Nutritional Sciences, Washington University School of Medicine, MSC 8031-0014-01, 660 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Kristine Griffett
- Department of Anatomy, Physiology and Pharmacology, Auburn University, College of Veterinary Medicine, 1130 Wire Road, Auburn, AL 36849, USA
| | - Kyle S. McCommis
- Department of Biochemistry & Molecular Biology, Saint Louis University School of Medicine, 1100 S. Grand Blvd., St. Louis, MO 63104, USA
| | - Brian N. Finck
- Department of Medicine, Division of Geriatrics & Nutritional Sciences, Washington University School of Medicine, MSC 8031-0014-01, 660 S. Euclid Ave., St. Louis, MO 63110, USA
| | - Tim R. Peterson
- Department of Medicine, Department of Genetics, Institute for Public Health, Washington University School of Medicine, BJC Institute of Health, 425 S. Euclid Ave., St. Louis, MO 63110, USA
- BIOIO, 4340 Duncan Ave. Suite 236, St. Louis, MO 63110, USA
- Healthspan Technologies, 4340 Duncan Ave. Suite 265, St. Louis, MO 63110, USA
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Heintz MM, Eccles JA, Olack EM, Maner-Smith KM, Ortlund EA, Baldwin WS. Human CYP2B6 produces oxylipins from polyunsaturated fatty acids and reduces diet-induced obesity. PLoS One 2022; 17:e0277053. [PMID: 36520866 PMCID: PMC9754190 DOI: 10.1371/journal.pone.0277053] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 10/18/2022] [Indexed: 12/23/2022] Open
Abstract
Multiple factors in addition to over consumption lead to obesity and non-alcoholic fatty liver disease (NAFLD) in the United States and worldwide. CYP2B6 is the only human detoxification CYP whose loss is associated with obesity, and Cyp2b-null mice show greater diet-induced obesity with increased steatosis than wildtype mice. However, a putative mechanism has not been determined. LC-MS/MS revealed that CYP2B6 metabolizes PUFAs, with a preference for metabolism of ALA to 9-HOTrE and to a lesser extent 13-HOTrE with a preference for metabolism of PUFAs at the 9- and 13-positions. To further study the role of CYP2B6 in vivo, humanized-CYP2B6-transgenic (hCYP2B6-Tg) and Cyp2b-null mice were fed a 60% high-fat diet for 16 weeks. Compared to Cyp2b-null mice, hCYP2B6-Tg mice showed reduced weight gain and metabolic disease as measured by glucose tolerance tests, however hCYP2B6-Tg male mice showed increased liver triglycerides. Serum and liver oxylipin metabolite concentrations increased in male hCYP2B6-Tg mice, while only serum oxylipins increased in female hCYP2B6-Tg mice with the greatest increases in LA oxylipins metabolized at the 9 and 13-positions. Several of these oxylipins, specifically 9-HODE, 9-HOTrE, and 13-oxoODE, are PPAR agonists. RNA-seq data also demonstrated sexually dimorphic changes in gene expression related to nuclear receptor signaling, especially CAR > PPAR with qPCR suggesting PPARγ signaling is more likely than PPARα signaling in male mice. Overall, our data indicates that CYP2B6 is an anti-obesity enzyme, but probably to a lesser extent than murine Cyp2b's. Therefore, the inhibition of CYP2B6 by xenobiotics or dietary fats can exacerbate obesity and metabolic disease potentially through disrupted PUFA metabolism and the production of key lipid metabolites.
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Affiliation(s)
- Melissa M. Heintz
- Biological Sciences, Clemson University, Clemson, South Carolina, United States of America
| | - Jazmine A. Eccles
- Biological Sciences, Clemson University, Clemson, South Carolina, United States of America
| | - Emily M. Olack
- Biological Sciences, Clemson University, Clemson, South Carolina, United States of America
| | - Kristal M. Maner-Smith
- Emory Integrated Metabolomics and Lipodomics Core, Emory University, Atlanta, Georgia, United States of America
| | - Eric A. Ortlund
- Department of Biochemistry, Emory University School of Medicine, Emory University, Atlanta, Georgia, United States of America
| | - William S. Baldwin
- Biological Sciences, Clemson University, Clemson, South Carolina, United States of America
- * E-mail:
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Lin W, Zhang X, Zhang C, Li L, Zhang J, Xie P, Zhan Y, An W. Deletion of Smurf1 attenuates liver steatosis via stabilization of p53. J Transl Med 2022; 102:1075-1087. [PMID: 36775348 DOI: 10.1038/s41374-022-00802-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 04/19/2022] [Accepted: 04/28/2022] [Indexed: 11/09/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most prevalent chronic liver disease, characterized by excessive hepatic lipid accumulation. Recently, we demonstrated that Smad ubiquitination regulatory factor 1 (Smurf1) deficiency significantly alleviates mouse hepatic steatosis. However, the mechanism of Smurf1-regulating hepatic lipid accumulation requires further exploration and clarification. Hence, this study explores the potential mechanism of Smurf1 in hepatic steatosis. In this study, hepatic Smurf1 proteins in NAFLD patients and healthy individuals were determined using immunohistochemical staining. Control and NAFLD mouse models were established by feeding Smurf1-knockout (KO) and wild-type mice with either a high-fat diet (HFD) or a chow diet (CD) for eight weeks. Oleic acid (OA)-induced steatotic hepatocytes were used as the NAFLD mode cells. Lipid content in liver tissues was analyzed. Smurf1-MDM2 interaction, MDM2 and p53 ubiquitination, and p53 target genes expression in liver tissues and hepatocytes were analyzed. We found that hepatic Smurf1 is highly expressed in NAFLD patients and HFD-induced NAFLD mice. Its deletion attenuates hepatocyte steatosis. Mechanistically, Smurf1 interacts with and stabilizes mouse double minute 2 (MDM2), promoting p53 degradation. In Smurf1-deficient hepatocytes, an increase in p53 suppresses SREBP-1c expression and elevates the expression of both malonyl-CoA decarboxylase (MCD) and lipin1 (Lpin1), two essential proteins in lipid catabolism. Contrarily, the activities of these three proteins and hepatocyte steatosis are reversed by p53 knockdown in Smurf1-deficient hepatocytes. This study shows that Smurf1 is involved in the pathogenesis of NAFLD by balancing de novo lipid synthesis and lipolysis.
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Affiliation(s)
- Wenjun Lin
- Department of Gastroenterology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Xin Zhang
- State Key Laboratory of Proteomics, National Center of Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, China
| | - Chuan Zhang
- Department of Gastroenterology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Li Li
- Department of Gastroenterology, Beijing Tongren Hospital, Capital Medical University, Beijing, China
| | - Jing Zhang
- The Third Unit, Department of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - Ping Xie
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China.
| | - Yutao Zhan
- Department of Gastroenterology, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
| | - Wei An
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing, China.
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Fang C, Pan J, Qu N, Lei Y, Han J, Zhang J, Han D. The AMPK pathway in fatty liver disease. Front Physiol 2022; 13:970292. [PMID: 36203933 PMCID: PMC9531345 DOI: 10.3389/fphys.2022.970292] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 07/25/2022] [Indexed: 11/20/2022] Open
Abstract
Lipid metabolism disorders are the primary causes for the occurrence and progression of various liver diseases, including non-alcoholic fatty liver disease (NAFLD) and alcoholic fatty liver disease (AFLD) caused by a high-fat diet and ethanol. AMPK signaling pathway plays an important role in ameliorating lipid metabolism disorders. Progressive research has clarified that AMPK signal axes are involved in the prevention and reduction of liver injury. Upregulation of AMK can alleviate FLD in mice induced by alcohol or insulin resistance, type 2 diabetes, and obesity, and most natural AMPK agonists can regulate lipid metabolism, inflammation, and oxidative stress in hepatocytes, consequently regulating FLD in mice. In NAFLD and AFLD, increasing the activity of AMPK can inhibit the synthesis of fatty acids and cholesterol by down-regulating the expression of adipogenesis gene (FAS, SREBP-1c, ACC and HMGCR); Simultaneously, by increasing the expression of fatty acid oxidation and lipid decomposition genes (CPT1, PGC1, and HSL, ATGL) involved in fatty acid oxidation and lipid decomposition, the body’s natural lipid balance can be maintained. At present, some AMPK activators are thought to be beneficial during therapeutic treatment. Therefore, activation of AMPK signaling pathway is a potential therapeutic target for disorders of the liver. We summarized the most recent research on the role of the AMPK pathway in FLD in this review. Simultaneously, we performed a detailed description of each signaling axis of the AMPK pathway, as well as a discussion of its mechanism of action and therapeutic significance.
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Affiliation(s)
- Chunqiu Fang
- College of Pharmacy, Changchun University of Chinese Medicine, Changchunn, China
| | - Jianheng Pan
- College of Pharmacy, Changchun University of Chinese Medicine, Changchunn, China
| | - Ning Qu
- College of Traditional Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Yuting Lei
- College of Pharmacy, Changchun University of Chinese Medicine, Changchunn, China
| | - Jiajun Han
- College of Pharmacy, Changchun University of Chinese Medicine, Changchunn, China
| | - Jingzhou Zhang
- College of Traditional Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Dong Han
- College of Pharmacy, Changchun University of Chinese Medicine, Changchunn, China
- *Correspondence: Dong Han,
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Kalayinia S, Mahdavi M, Houshmand G, Hesami M, Pourirahim M, Maleki M. Novel homozygous stop-gain pathogenic variant of PPP1R13L gene leads to arrhythmogenic cardiomyopathy. BMC Cardiovasc Disord 2022; 22:359. [PMID: 35933355 PMCID: PMC9356459 DOI: 10.1186/s12872-022-02802-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 08/03/2022] [Indexed: 01/19/2023] Open
Abstract
Background Arrhythmogenic cardiomyopathy (ACM) is a heritable cardiac disease with two main features: electric instability and myocardial fibro-fatty replacement. There is no defined treatment except for preventing arrhythmias and sudden death. Detecting causative mutations helps identify the disease pathogenesis and family members at risk. We used whole-exome sequencing to determine a genetic explanation for an ACM-positive patient from a consanguineous family. Methods After clinical analysis, cardiac magnetic resonance, and pathology, WES was performed on a two-year-old ACM proband. Variant confirmation and segregation of available pedigree members were performed by PCR and Sanger sequencing. The PPP1R13L gene was also analyzed for possible causative variants and their hitherto reported conditions. Results We found a novel homozygous stop-gain pathogenic variant, c.580C > T: p.Gln194Ter, in the PPP1R13L gene, which was confirmed and segregated by PCR and Sanger sequencing. This variant was not reported in any databases. Conclusions WES is valuable for the identification of novel candidate genes. To our knowledge, this research is the first report of the PPP1R13L c.580C > T variant. The PPP1R13L variant was associated with ACM as confirmed by cardiac magnetic resonance and pathology. Our findings indicate that PPP1R13L should be included in ACM genetic testing to improve the identification of at-risk family members and the diagnostic yield. Supplementary Information The online version contains supplementary material available at 10.1186/s12872-022-02802-7.
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Affiliation(s)
- Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Golnaz Houshmand
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mahshid Hesami
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Maryam Pourirahim
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran.
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Lu H, Lei X, Winkler R, John S, Kumar D, Li W, Alnouti Y. Crosstalk of hepatocyte nuclear factor 4a and glucocorticoid receptor in the regulation of lipid metabolism in mice fed a high-fat-high-sugar diet. Lipids Health Dis 2022; 21:46. [PMID: 35614477 PMCID: PMC9134643 DOI: 10.1186/s12944-022-01654-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 05/06/2022] [Indexed: 12/15/2022] Open
Abstract
Background Hepatocyte nuclear factor 4α (HNF4α) and glucocorticoid receptor (GR), master regulators of liver metabolism, are down-regulated in fatty liver diseases. The present study aimed to elucidate the role of down-regulation of HNF4α and GR in fatty liver and hyperlipidemia. Methods Adult mice with liver-specific heterozygote (HET) and knockout (KO) of HNF4α or GR were fed a high-fat-high-sugar diet (HFHS) for 15 days. Alterations in hepatic and circulating lipids were determined with analytical kits, and changes in hepatic mRNA and protein expression in these mice were quantified by real-time PCR and Western blotting. Serum and hepatic levels of bile acids were quantified by LC-MS/MS. The roles of HNF4α and GR in regulating hepatic gene expression were determined using luciferase reporter assays. Results Compared to HFHS-fed wildtype mice, HNF4α HET mice had down-regulation of lipid catabolic genes, induction of lipogenic genes, and increased hepatic and blood levels of lipids, whereas HNF4α KO mice had fatty liver but mild hypolipidemia, down-regulation of lipid-efflux genes, and induction of genes for uptake, synthesis, and storage of lipids. Serum levels of chenodeoxycholic acid and deoxycholic acid tended to be decreased in the HNF4α HET mice but dramatically increased in the HNF4α KO mice, which was associated with marked down-regulation of cytochrome P450 7a1, the rate-limiting enzyme for bile acid synthesis. Hepatic mRNA and protein expression of sterol-regulatory-element-binding protein-1 (SREBP-1), a master lipogenic regulator, was induced in HFHS-fed HNF4α HET mice. In reporter assays, HNF4α cooperated with the corepressor small heterodimer partner to potently inhibit the transactivation of mouse and human SREBP-1C promoter by liver X receptor. Hepatic nuclear GR proteins tended to be decreased in the HNF4α KO mice. HFHS-fed mice with liver-specific KO of GR had increased hepatic lipids and induction of SREBP-1C and PPARγ, which was associated with a marked decrease in hepatic levels of HNF4α proteins in these mice. In reporter assays, GR and HNF4α synergistically/additively induced lipid catabolic genes. Conclusions induction of lipid catabolic genes and suppression of lipogenic genes by HNF4α and GR may mediate the early resistance to HFHS-induced fatty liver and hyperlipidemia. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12944-022-01654-6.
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Affiliation(s)
- Hong Lu
- Department of Pharmacology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA.
| | - Xiaohong Lei
- Department of Pharmacology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Rebecca Winkler
- Department of Pharmacology, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Savio John
- Department of Medicine, SUNY Upstate Medical University, Syracuse, NY, 13210, USA
| | - Devendra Kumar
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Wenkuan Li
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Yazen Alnouti
- Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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LPIN1 Induces Gefitinib Resistance in EGFR Inhibitor-Resistant Non-Small Cell Lung Cancer Cells. Cancers (Basel) 2022; 14:cancers14092222. [PMID: 35565351 PMCID: PMC9102170 DOI: 10.3390/cancers14092222] [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: 03/29/2022] [Revised: 04/24/2022] [Accepted: 04/27/2022] [Indexed: 12/04/2022] Open
Abstract
Drug resistance limits the efficacy of targeted therapies, including tyrosine kinase inhibitors (TKIs); however, a substantial portion of the drug resistance mechanisms remains unexplained. In this study, we identified LPIN1 as a key factor that regulates gefitinib resistance in epidermal growth factor receptor (EGFR)-mutant non-small cell lung cancer (NSCLC) cells. Unlike TKI-sensitive HCC827 cells, gefitinib treatment induced LPIN1 expression and increased diacylglycerol concentration in TKI-resistant H1650 cells, followed by the activation of protein kinase C delta and nuclear factor kappa B (NF-κB) in an LPIN1-dependent manner, resulting in cancer cell survival. Additionally, LPIN1 increased the production of lipid droplets, which play an important role in TKI drug resistance. All results were recapitulated in a patient-derived EGFR-mutant NSCLC cell line. In in vivo tumorigenesis assay, we identified that both shRNA-mediated depletion and pharmaceutical inhibition of LPIN1 clearly reduced tumor growth and confirmed that gefitinib treatment induced LPIN1 expression and LPIN1-dependent NF-κB activation (an increase in p-IκBα level) in tumor tissues. These results suggest an effective strategy of co-treating TKIs and LPIN1 inhibitors to prevent TKI resistance in NSCLC patients.
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Stone SJ. Mechanisms of intestinal triacylglycerol synthesis. Biochim Biophys Acta Mol Cell Biol Lipids 2022; 1867:159151. [PMID: 35296424 DOI: 10.1016/j.bbalip.2022.159151] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/13/2022] [Accepted: 02/16/2022] [Indexed: 02/07/2023]
Abstract
Triacylglycerols are a major source of stored energy that are obtained either from the diet or can be synthesized to some extent by most tissues. Alterations in pathways of triacylglycerol metabolism can result in their excessive accumulation leading to obesity, insulin resistance, cardiovascular disease and nonalcoholic fatty liver disease. Most tissues in mammals synthesize triacylglycerols via the glycerol 3-phosphate pathway. However, in the small intestine the monoacylglycerol acyltransferase pathway is the predominant pathway for triacylglycerol biosynthesis where it participates in the absorption of dietary triacylglycerol. In this review, the enzymes that are part of both the glycerol 3-phosphate and monoacylglycerol acyltransferase pathways and their contributions to intestinal triacylglycerol metabolism are reviewed. The potential of some of the enzymes involved in triacylglycerol synthesis in the small intestine as possible therapeutic targets for treating metabolic disorders associated with elevated triacylglycerol is briefly discussed.
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Affiliation(s)
- Scot J Stone
- Department of Biochemistry, Microbiology and Immunology, University of Saskatchewan, Saskatoon, Saskatchewan S7N 5E5, Canada.
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Wang Y, Zhao H, Yang L, Zhang H, Yu X, Fei W, Zhen Y, Gao Z, Chen S, Ren L. Quantitative proteomics analysis based on tandem mass tag labeling coupled with labeling coupled with liquid chromatography-tandem mass spectrometry discovers the effect of silibinin on non-alcoholic fatty liver disease in mice. Bioengineered 2022; 13:6750-6766. [PMID: 35246007 PMCID: PMC9208462 DOI: 10.1080/21655979.2022.2045837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
In recent years, the beneficial effects of silibinin (SIL) on nonalcoholic fatty liver disease (NAFLD) have attracted widespread attention. We tried to study the intervention effect of SIL on NAFLD, and explore the potential mechanisms and targets of SIL on NAFLD improvement. Thirty-three male C57BL6/J mice were divided into three groups, and, respectively, fed a normal diet (ND), a high-fat diet (HFD) or a HFD given SIL treatment (HFD+SIL). Biochemical indexes and histopathological changes of mice in each group were detected. In addition, quantitative proteomics analysis based on tandem mass tag (TMT) labeling coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS) and bioinformatics analysis was performed on protein changes in the livers. SIL could reduce the weight of mice, reduce liver lipid deposition, and improve glucose metabolism. Through comparison among the three experimental groups, a total of 30 overlapping proteins were found. These identified proteins were closely linked to liver lipid metabolism and energy homeostasis. Moreover, some drug targets were found, namely perilipin-2, phosphatidate phosphatase LPIN1, farnesyl pyrophosphate synthase, and glutathione S-transferase A1. In conclusions, high-fat diet increases the expressions of proteins implicated in lipid synthesis and transport in the liver, which can result in disorders of liver lipid metabolism. SIL can decrease liver lipid deposition and increase insulin sensitivity by regulating the expressions of these proteins. It not only improves the disorder of lipid metabolism in vivo, but also improves the disorder of glucose metabolism.
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Affiliation(s)
- Yichao Wang
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Hang Zhao
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Liying Yang
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - He Zhang
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Xian Yu
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Wenjie Fei
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Yunfeng Zhen
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Zhe Gao
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Shuchun Chen
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
| | - Luping Ren
- Department of Endocrinology, Hebei General Hospital, Shijiazhuang, Hebei, China
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Hamsanathan S, Gurkar AU. Lipids as Regulators of Cellular Senescence. Front Physiol 2022; 13:796850. [PMID: 35370799 PMCID: PMC8965560 DOI: 10.3389/fphys.2022.796850] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Accepted: 01/03/2022] [Indexed: 12/11/2022] Open
Abstract
Lipids are key macromolecules that perform a multitude of biological functions ranging from maintaining structural integrity of membranes, energy storage, to signaling molecules. Unsurprisingly, variations in lipid composition and its levels can influence the functional and physiological state of the cell and its milieu. Cellular senescence is a permanent state of cell cycle arrest and is a hallmark of the aging process, as well as several age-related pathologies. Senescent cells are often characterized by alterations in morphology, metabolism, chromatin remodeling and exhibit a complex pro-inflammatory secretome (SASP). Recent studies have shown that the regulation of specific lipid species play a critical role in senescence. Indeed, some lipid species even contribute to the low-grade inflammation associated with SASP. Many protein regulators of senescence have been well characterized and are associated with lipid metabolism. However, the link between critical regulators of cellular senescence and senescence-associated lipid changes is yet to be elucidated. Here we systematically review the current knowledge on lipid metabolism and dynamics of cellular lipid content during senescence. We focus on the roles of major players of senescence in regulating lipid metabolism. Finally, we explore the future prospects of lipid research in senescence and its potential to be targeted as senotherapeutics.
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Affiliation(s)
- Shruthi Hamsanathan
- Aging Institute of UPMC, The University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Aditi U. Gurkar
- Aging Institute of UPMC, The University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
- Division of Geriatric Medicine, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
- Geriatric Research, Education and Clinical Center, Veterans Affairs Pittsburgh Healthcare System, Pittsburgh, PA, United States
- *Correspondence: Aditi U. Gurkar,
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McPhee MJ, Salsman J, Foster J, Thompson J, Mathavarajah S, Dellaire G, Ridgway ND. Running 'LAPS' Around nLD: Nuclear Lipid Droplet Form and Function. Front Cell Dev Biol 2022; 10:837406. [PMID: 35178392 PMCID: PMC8846306 DOI: 10.3389/fcell.2022.837406] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 01/10/2022] [Indexed: 12/12/2022] Open
Abstract
The nucleus harbours numerous protein subdomains and condensates that regulate chromatin organization, gene expression and genomic stress. A novel nuclear subdomain that is formed following exposure of cells to excess fatty acids is the nuclear lipid droplet (nLD), which is composed of a neutral lipid core surrounded by a phospholipid monolayer and associated regulatory and lipid biosynthetic enzymes. While structurally resembling cytoplasmic LDs, nLDs are formed by distinct but poorly understood mechanisms that involve the emergence of lipid droplets from the lumen of the nucleoplasmic reticulum and de novo lipid synthesis. Luminal lipid droplets that emerge into the nucleoplasm do so at regions of the inner nuclear membrane that become enriched in promyelocytic leukemia (PML) protein. The resulting nLDs that retain PML on their surface are termed lipid-associated PML structures (LAPS), and are distinct from canonical PML nuclear bodies (NB) as they lack key proteins and modifications associated with these NBs. PML is a key regulator of nuclear signaling events and PML NBs are sites of gene regulation and post-translational modification of transcription factors. Therefore, the subfraction of nLDs that form LAPS could regulate lipid stress responses through their recruitment and retention of the PML protein. Both nLDs and LAPS have lipid biosynthetic enzymes on their surface suggesting they are active sites for nuclear phospholipid and triacylglycerol synthesis as well as global lipid regulation. In this review we have summarized the current understanding of nLD and LAPS biogenesis in different cell types, their structure and composition relative to other PML-associated cellular structures, and their role in coordinating a nuclear response to cellular overload of fatty acids.
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Affiliation(s)
- Michael J McPhee
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada
| | - Jayme Salsman
- Department of Pathology, Dalhousie University, Halifax, NS, Canada
| | - Jason Foster
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada
| | - Jordan Thompson
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada
| | | | - Graham Dellaire
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada.,Department of Pathology, Dalhousie University, Halifax, NS, Canada
| | - Neale D Ridgway
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, NS, Canada.,Department of Pediatrics, Dalhousie University, Halifax, NS, Canada
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Yoshida S, Hatasa M, Ohsugi Y, Tsuchiya Y, Liu A, Niimi H, Morita K, Shimohira T, Sasaki N, Maekawa S, Shiba T, Hirota T, Okano T, Hirose A, Ibi R, Noritake K, Tomiga Y, Nitta H, Suzuki T, Takahashi H, Miyasaka N, Iwata T, Katagiri S. Porphyromonas gingivalis Administration Induces Gestational Obesity, Alters Gene Expression in the Liver and Brown Adipose Tissue in Pregnant Mice, and Causes Underweight in Fetuses. Front Cell Infect Microbiol 2022; 11:745117. [PMID: 35096633 PMCID: PMC8792863 DOI: 10.3389/fcimb.2021.745117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 12/07/2021] [Indexed: 12/18/2022] Open
Abstract
Preventing adverse pregnancy outcomes is crucial for maternal and child health. Periodontal disease is a risk factor for many systemic diseases including adverse pregnancy outcomes, such as preterm birth and low birth weight. In addition, the administration of the periodontopathic bacterium Porphyromonas gingivalis exacerbates obesity, glucose tolerance, and hepatic steatosis and alters endocrine function in the brown adipose tissue (BAT). However, the effects of having periodontal disease during pregnancy remain unclear. Thus, this study investigates the effect of P. gingivalis administration on obesity, liver, and BAT during pregnancy. Sonicated P. gingivalis (Pg) or saline (Co) was injected intravenously and administered orally to pregnant C57BL/6J mice three times per week. Maternal body weight and fetal body weight on embryonic day (ED) 18 were evaluated. Microarray analysis and qPCR in the liver and BAT and hepatic and plasma triglyceride quantification were performed on dams at ED 18. The body weight of Pg dams was heavier than that of Co dams; however, the fetal body weight was decreased in the offspring of Pg dams. Microarray analysis revealed 254 and 53 differentially expressed genes in the liver and BAT, respectively. Gene set enrichment analysis exhibited the downregulation of fatty acid metabolism gene set in the liver and estrogen response early/late gene sets in the BAT, whereas inflammatory response and IL6/JAK/STAT3 signaling gene sets were upregulated both in the liver and BAT. The downregulation of expression levels of Lpin1, Lpin2, and Lxra in the liver, which are associated with triglyceride synthesis, and a decreasing trend in hepatic triglyceride of Pg dams were observed. P. gingivalis administration may alter lipid metabolism in the liver. Overall, the intravenous and oral administration of sonicated P. gingivalis-induced obesity and modified gene expression in the liver and BAT in pregnant mice and caused fetuses to be underweight.
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Affiliation(s)
- Sumiko Yoshida
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Masahiro Hatasa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yujin Ohsugi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yosuke Tsuchiya
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Anhao Liu
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hiromi Niimi
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kazuki Morita
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tsuyoshi Shimohira
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Naoki Sasaki
- Oral Diagnosis and General Dentistry, Division of Clinical Dentistry, Tokyo Medical and Dental University Hospital, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Shogo Maekawa
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takahiko Shiba
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Tomomitsu Hirota
- Division of Molecular Genetics, Research Center for Medical Sciences, The Jikei University School of Medicine, Tokyo, Japan
| | - Tokuju Okano
- Department of Bacterial Pathogenesis, Infection and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Asuka Hirose
- Comprehensive Reproductive Medicine, Regulation of Internal Environment and Reproduction, Systemic Organ Regulation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Rinko Ibi
- Comprehensive Reproductive Medicine, Regulation of Internal Environment and Reproduction, Systemic Organ Regulation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Kanako Noritake
- Oral Diagnosis and General Dentistry, Division of Clinical Dentistry, Tokyo Medical and Dental University Hospital, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Yuki Tomiga
- Division of Metabolism and Endocrinology, Faculty of Medicine, Saga University, Saga, Japan
| | - Hiroshi Nitta
- Oral Diagnosis and General Dentistry, Division of Clinical Dentistry, Tokyo Medical and Dental University Hospital, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Toshihiko Suzuki
- Department of Bacterial Pathogenesis, Infection and Host Response, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Hirokazu Takahashi
- Division of Metabolism and Endocrinology, Faculty of Medicine, Saga University, Saga, Japan
- Liver Center, Saga University Hospital, Faculty of Medicine, Saga University, Saga, Japan
| | - Naoyuki Miyasaka
- Comprehensive Reproductive Medicine, Regulation of Internal Environment and Reproduction, Systemic Organ Regulation, Graduate School, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
| | - Sayaka Katagiri
- Department of Periodontology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University (TMDU), Tokyo, Japan
- *Correspondence: Sayaka Katagiri,
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The Impact of Intermittent Hypobaric Hypoxia Exposures on Triacylglycerol Synthesis in Rat Liver. Rep Biochem Mol Biol 2022; 10:437-444. [PMID: 34981021 DOI: 10.52547/rbmb.10.3.437] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 05/23/2021] [Indexed: 11/18/2022]
Abstract
Background In a hypoxic state, fatty acid breakdown reaction may be inhibited due to a lack of oxygen. It is likely that the fatty acids will be stored as triacylglycerol. The aim of this study was to analyse triacylglycerol synthesis in the liver after intermittent hypobaric hypoxia (HH) exposures. Methods Samples are liver tissues from 25 male Wistar rats were divided into 5 groups: control group (normoxia), group I (once HH exposure), group II (twice HH exposures), group III (three-times HH exposures) and group IV (four-times HH exposures). The triacylglycerol level, mRNA expression of HIF-1α and PPAR-γ were measured in rat liver from each group. Results We demonstrated that triacylglycerol level, mRNA expression of HIF-1α and PPAR-γ is elevated in group I significantly compared to control group. In the intermittent HH groups (group II, III and IV), mRNA expression of HIF-1α and PPAR-γ tends to downregulate near to control group. However, the triacylglycerol level is still found increased in the intermittent HH exposures groups. Significant increasing of triacylglycerol level was found especially in group IV compared to control group. Conclusion We conclude that intermittent HH exposures will increase the triacylglycerol level in rat liver, supported by the increasing of HIF-1α and PPAR-γ mRNA expression that act as transcription factor to promote triacylglycerol synthesis.
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Yang Y, Chen Z, Zhao X, Xie H, Du L, Gao H, Xie C. Mechanisms of Kaempferol in the treatment of diabetes: A comprehensive and latest review. Front Endocrinol (Lausanne) 2022; 13:990299. [PMID: 36157449 PMCID: PMC9490412 DOI: 10.3389/fendo.2022.990299] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/17/2022] [Indexed: 01/07/2023] Open
Abstract
Obesity-insulin resistance-β-cells apoptosis" is an important trilogy of the pathogenesis of type 2 diabetes. With the global pandemic of obesity and diabetes, continuous research and development of new drugs focuses on the prevention of the pathological progress of these diseases. According to a recent study, the natural product kaempferol has excellent antidiabetic effects. Therefore, this review comprehensively summarized the frontier studies and pharmacological mechanisms of kaempferol in the treatment of diabetes. The successful research and development of kaempferol may yield a significant leap in the treatment of diabetes and its complications.
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Affiliation(s)
- Yan Yang
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Zhengtao Chen
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Xiaoyan Zhao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Hongyan Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
| | - Lian Du
- School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hong Gao
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
| | - Chunguang Xie
- Hospital of Chengdu, University of Traditional Chinese Medicine, Chengdu, China
- *Correspondence: Hong Gao, ; Chunguang Xie,
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Xu S, Wang Y, Li Z, Hua Q, Jiang M, Fan X. LncRNA GAS5 Knockdown Mitigates Hepatic Lipid Accumulation via Regulating MiR-26a-5p/PDE4B to Activate cAMP/CREB Pathway. Front Endocrinol (Lausanne) 2022; 13:889858. [PMID: 35957809 PMCID: PMC9361042 DOI: 10.3389/fendo.2022.889858] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/23/2022] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Non-alcoholic fatty liver disease (NAFLD) can be attributed to the dysregulation of hepatic lipid metabolism; however, its cellular and molecular mechanisms remain unclear. This study aims to explore the effect of long non-coding RNA growth arrest specific 5 (GAS5) on hepatic lipid metabolism in fatty liver models. METHODS Obese mice, high fat diet-fed mice and free fatty acid-stimulated cells were used for GAS5 expression detection. GAS5 overexpression or knockdown models were established to elucidate the regulatory function of GAS5 in de novo lipogenesis (DNL) and mitochondrial function. Bioinformatic analyses and dual luciferase assays were used to investigate the interaction between GAS5, miR-26a-5p and phosphodiesterase (PDE) 4B. The involvement of the cyclic adenosine monophosphate (cAMP)/cAMP-response element-binding protein (CREB) pathway was evaluated using H89 and forskolin treatment. RESULTS GAS5 was activated in vitro and in vivo fatty liver models. Knockdown of GAS5 reduced lipid droplet accumulation, DNL associated enzymes and preserved mitochondrial function, while GAS5 overexpression exacerbated hepatic lipid accumulation. Mechanistically, GAS5 sponged miR-26a-5p to increase PDE4B expression and subsequently modulated DNL and mitochondrial function via the cAMP/CREB pathway. CONCLUSION Downregulation of GAS5 can activate the cAMP/CREB pathway through miR-26a-5p/PDE4B axis to mitigate hepatic lipid accumulation. This study provides evidence that downregulation of GAS5 may be a potential therapeutic option for the treatment of NAFLD.
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Affiliation(s)
| | | | | | | | - Miao Jiang
- *Correspondence: Xiaoming Fan, ; Miao Jiang,
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Yepmo M, Potier JB, Pinget M, Grabarz A, Bouzakri K, Dumond Bourie A. Discussing the role of circular RNA in the pathogenesis of non-alcoholic fatty liver disease and its complications. Front Endocrinol (Lausanne) 2022; 13:1035159. [PMID: 36407314 PMCID: PMC9667057 DOI: 10.3389/fendo.2022.1035159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 10/17/2022] [Indexed: 01/24/2023] Open
Abstract
Circular RNAs (circRNAs) are class of non-coding RNA, which are characterized by a covalently closed loop structure. Functionally they can act on cellular physiology, notably by sponging microRNAs (miR), regulating gene expression or interacting with binding protein. To date, circRNAs might represent an interesting, underexploited avenue for new target discovery for therapeutic applications, especially in the liver. The first characteristic of non-alcoholic fatty liver disease (NAFLD) is hepatic cholesterol accumulation, followed by its advanced form of the affection, nonalcoholic steatohepatitis (NASH), due to the occurrence of lobular inflammation, irreversible fibrosis, and in some cases hepatocellular carcinoma (HCC). Therefore, studies have investigated the importance of the dysregulation of circRNAs in the onset of metabolic disorders. In this review, we summarize the potential role of circRNAs in the development of metabolic diseases associated with the liver such as NAFLD or NASH, and their potential to become therapeutic strategies for these pathologies.
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Affiliation(s)
- Melissa Yepmo
- Centre européen d’étude du Diabète, Unité Mixte de Recherche de l’Université de Strasbourg « Diabète et Thérapeutique », Strasbourg, France
| | - Jean-Baptiste Potier
- Centre européen d’étude du Diabète, Unité Mixte de Recherche de l’Université de Strasbourg « Diabète et Thérapeutique », Strasbourg, France
- ILONOV, Strasbourg, France
| | - Michel Pinget
- Centre européen d’étude du Diabète, Unité Mixte de Recherche de l’Université de Strasbourg « Diabète et Thérapeutique », Strasbourg, France
| | | | - Karim Bouzakri
- Centre européen d’étude du Diabète, Unité Mixte de Recherche de l’Université de Strasbourg « Diabète et Thérapeutique », Strasbourg, France
- ILONOV, Strasbourg, France
| | - Aurore Dumond Bourie
- Centre européen d’étude du Diabète, Unité Mixte de Recherche de l’Université de Strasbourg « Diabète et Thérapeutique », Strasbourg, France
- *Correspondence: Aurore Dumond Bourie,
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50
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Duan J, Wang Z, Duan R, Yang C, Zhao R, Feng Q, Qin Y, Jiang J, Gu S, Lv K, zhang L, He B, Birnbaumer L, Yang S, Chen Z, Yang Y. Therapeutic targeting of hepatic ACSL4 ameliorates NASH in mice. Hepatology 2022; 75:140-153. [PMID: 34510514 PMCID: PMC8688219 DOI: 10.1002/hep.32148] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 08/11/2021] [Accepted: 09/03/2021] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND AIMS Globally, NAFLD is one of the most common liver disorders, with an estimated prevalence rate of more than 30% in men and 15% in women and an even higher prevalence in people with type 2 diabetes mellitus. Optimal pharmacologic therapeutic approaches for NAFLD are an urgent necessity. APPROACH AND RESULTS In this study, we showed that compared with healthy controls, hepatic ACSL4 levels in patients with NAFLD were found to be elevated. Suppression of ACSL4 expression promoted mitochondrial respiration, thereby enhancing the capacity of hepatocytes to mediate β-oxidation of fatty acids and to minimize lipid accumulation by up-regulating peroxisome proliferator-activated receptor coactivator-1 alpha. Moreover, we found that abemaciclib is a potent and selective ACSL4 inhibitor, and low dose of abemaciclib significantly ameliorated most of the NAFLD symptoms in multiple NAFLD mice models. CONCLUSIONS Therefore, inhibition of ACSL4 is a potential alternative therapeutic approach for NAFLD.
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Affiliation(s)
- Jingjing Duan
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Zhuo Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Ran Duan
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Chenxinhui Yang
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Ruolin Zhao
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Qi Feng
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Yuanyuan Qin
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Jingwei Jiang
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Shouyong Gu
- Province Geriatic Hospital, 30 Luojia Road, Nanjing 210024, China
| | - Kaiyan Lv
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Libo zhang
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Bixia He
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Lutz Birnbaumer
- Institute of Biomedical Research (BIOMED), Catholic University of Argentina, Buenos Aires C1107AFF, Argentina, and Neurobiology Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA
| | - Song Yang
- Center of hepatology, Beijing Ditan Hospital of Capital Medical University, Beijing 100015, China
| | - Zhen Chen
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Yong Yang
- Center for New Drug Safety Evaluation and Research, State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
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