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Ernst R, Renne MF, Jain A, von der Malsburg A. Endoplasmic Reticulum Membrane Homeostasis and the Unfolded Protein Response. Cold Spring Harb Perspect Biol 2024; 16:a041400. [PMID: 38253414 PMCID: PMC11293554 DOI: 10.1101/cshperspect.a041400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
The endoplasmic reticulum (ER) is the key organelle for membrane biogenesis. Most lipids are synthesized in the ER, and most membrane proteins are first inserted into the ER membrane before they are transported to their target organelle. The composition and properties of the ER membrane must be carefully controlled to provide a suitable environment for the insertion and folding of membrane proteins. The unfolded protein response (UPR) is a powerful signaling pathway that balances protein and lipid production in the ER. Here, we summarize our current knowledge of how aberrant compositions of the ER membrane, referred to as lipid bilayer stress, trigger the UPR.
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Affiliation(s)
- Robert Ernst
- Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, 66421 Homburg, Germany
- Preclinical Center for Molecular Signaling (PZMS), Medical Faculty, Saarland University, 66421 Homburg, Germany
| | - Mike F Renne
- Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, 66421 Homburg, Germany
- Preclinical Center for Molecular Signaling (PZMS), Medical Faculty, Saarland University, 66421 Homburg, Germany
| | - Aamna Jain
- Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, 66421 Homburg, Germany
- Preclinical Center for Molecular Signaling (PZMS), Medical Faculty, Saarland University, 66421 Homburg, Germany
| | - Alexander von der Malsburg
- Medical Biochemistry and Molecular Biology, Medical Faculty, Saarland University, 66421 Homburg, Germany
- Preclinical Center for Molecular Signaling (PZMS), Medical Faculty, Saarland University, 66421 Homburg, Germany
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2
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Yang X, Zhu X, Sheng J, Fu Y, Nie D, You X, Chen Y, Yang X, Ling Q, Zhang H, Li X, Hu S. RNF213 promotes Treg cell differentiation by facilitating K63-linked ubiquitination and nuclear translocation of FOXO1. Nat Commun 2024; 15:5961. [PMID: 39013878 PMCID: PMC11252262 DOI: 10.1038/s41467-024-50392-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: 12/17/2023] [Accepted: 07/05/2024] [Indexed: 07/18/2024] Open
Abstract
Autoreactive CD4+ T helper cells are critical players that orchestrate the immune response both in multiple sclerosis (MS) and in other neuroinflammatory autoimmune diseases. Ubiquitination is a posttranslational protein modification involved in regulating a variety of cellular processes, including CD4+ T cell differentiation and function. However, only a limited number of E3 ubiquitin ligases have been characterized in terms of their biological functions, particularly in CD4+ T cell differentiation and function. In this study, we found that the RING finger protein 213 (RNF213) specifically promoted regulatory T (Treg) cell differentiation in CD4+ T cells and attenuated autoimmune disease development in an FOXO1-dependent manner. Mechanistically, RNF213 interacts with Forkhead Box Protein O1 (FOXO1) and promotes nuclear translocation of FOXO1 by K63-linked ubiquitination. Notably, RNF213 expression in CD4+ T cells was induced by IFN-β and exerts a crucial role in the therapeutic efficacy of IFN-β for MS. Together, our study findings collectively emphasize the pivotal role of RNF213 in modulating adaptive immune responses. RNF213 holds potential as a promising therapeutic target for addressing disorders associated with Treg cells.
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MESH Headings
- Ubiquitination
- T-Lymphocytes, Regulatory/immunology
- T-Lymphocytes, Regulatory/metabolism
- Ubiquitin-Protein Ligases/metabolism
- Ubiquitin-Protein Ligases/genetics
- Cell Differentiation
- Animals
- Forkhead Box Protein O1/metabolism
- Forkhead Box Protein O1/genetics
- Mice
- Humans
- Interferon-beta/metabolism
- Mice, Inbred C57BL
- Cell Nucleus/metabolism
- Multiple Sclerosis/immunology
- Multiple Sclerosis/metabolism
- Multiple Sclerosis/genetics
- Multiple Sclerosis/pathology
- Active Transport, Cell Nucleus
- Female
- Mice, Knockout
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/genetics
- HEK293 Cells
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Affiliation(s)
- Xiaofan Yang
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Xiaotong Zhu
- Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Junli Sheng
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Yuling Fu
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Dingnai Nie
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Xiaolong You
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Yitian Chen
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Xiaodan Yang
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Qiao Ling
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China
| | - Huili Zhang
- Department of Neurology, School of Medicine, Guangzhou First People's Hospital, South China University of Technology, Guangzhou, China.
| | - Xiaomin Li
- Department of Respiratory, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China.
| | - Shengfeng Hu
- The Second Affiliated Hospital, The Second School of Clinical Medicine, The State Key Laboratory of Respiratory Disease, Guangdong Provincial Key Laboratory of Allergy & Clinical Immunology, Guangzhou Medical University, Guangzhou, China.
- Department of Rheumatology and Clinical Immunology, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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3
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Mu R, Li J, Fu Y, Xie Q, Ma W. Diet Supplemented with Special Formula Milk Powder Promotes the Growth of the Brain in Rats. Nutrients 2024; 16:2188. [PMID: 39064631 PMCID: PMC11279928 DOI: 10.3390/nu16142188] [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: 06/12/2024] [Revised: 07/05/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024] Open
Abstract
This investigation was to study the effects of different formula components on the brain growth of rats. Fifty male SD rats were randomly divided into five groups: a basic diet group; a 20% ordinary milk powder group; a 20% special milk powder group; a 30% ordinary milk powder group; and a 30% special milk powder group by weight. LC-MS was used to detect brain lipidomics. After 28 days of feeding, compared with the basic diet group, the brain/body weights of rats in the 30% ordinary milk powder group were increased. The serum levels of 5-HIAA in the 30% ordinary milk powder group were lower than in the 20% ordinary milk powder group. Compared with the basic diet group, the expressions of DLCL, MePC, PI, and GM1 were higher in the groups with added special milk powder, while the expressions of LPE, LdMePE, SM, and MGTG were higher in the groups with added ordinary milk powder. The expression of MBP was significantly higher in the 20% ordinary group. This study found that different formula components of infant milk powder could affect brain growth in SD rats. The addition of special formula infant milk powder may have beneficial effects on rat brains by regulating brain lipid expression.
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Affiliation(s)
- Ruiqi Mu
- Capital Medical University, School of Public Health, Beijing Key Laboratory of Environmental Toxicology, Beijing 100069, China; (R.M.); (Y.F.)
| | - Jufang Li
- Feihe Reseach Institute, Heilongjiang Feihe Dairy Co., Ltd., Beijing 100015, China; (J.L.); (Q.X.)
| | - Yu Fu
- Capital Medical University, School of Public Health, Beijing Key Laboratory of Environmental Toxicology, Beijing 100069, China; (R.M.); (Y.F.)
| | - Qinggang Xie
- Feihe Reseach Institute, Heilongjiang Feihe Dairy Co., Ltd., Beijing 100015, China; (J.L.); (Q.X.)
| | - Weiwei Ma
- Capital Medical University, School of Public Health, Beijing Key Laboratory of Environmental Toxicology, Beijing 100069, China; (R.M.); (Y.F.)
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4
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Chiablaem K, Jinawath A, Nuanpirom J, Arora JK, Nasaree S, Thanomchard T, Singhto N, Chittavanich P, Suktitipat B, Charoensawan V, Chairoungdua A, Jinn-Chyuan Sheu J, Kiyotani K, Svasti J, Nakamura Y, Jinawath N. Identification of RNF213 as a Potential Suppressor of Local Invasion in Intrahepatic Cholangiocarcinoma. J Transl Med 2024; 104:102074. [PMID: 38723854 DOI: 10.1016/j.labinv.2024.102074] [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: 10/16/2023] [Revised: 04/08/2024] [Accepted: 04/30/2024] [Indexed: 06/14/2024] Open
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a lethal cancer with poor survival especially when it spreads. The histopathology of its rare intraductal papillary neoplasm of the bile duct type (IPNB) characteristically shows cancer cells originating within the confined bile duct space. These cells eventually invade and infiltrate the nearby liver tissues, making it a good model to study the mechanism of local invasion, which is the earliest step of metastasis. To discover potential suppressor genes of local invasion in ICC, we analyzed the somatic mutation profiles and performed clonal evolution analyses of the 11 pairs of macrodissected locally invasive IPNB tissues (LI-IPNB) and IPNB tissues without local invasion from the same patients. We identified a protein-truncating variant in an E3 ubiquitin ligase, RNF213 (c.6967C>T; p.Gln2323X; chr17: 78,319,102 [hg19], exon 29), as the most common protein-truncating variant event in LI-IPNB samples (4/11 patients). Knockdown of RNF213 in HuCCT1 and YSCCC cells showed increased migration and invasion, and reduced vasculogenic mimicry but maintained normal proliferation. Transcriptomic analysis of the RNF213-knockdown vs control cells was then performed in the HuCCT1, YSCCC, and KKU-100 cells. Gene ontology enrichment analysis of the common differentially expressed genes revealed significantly altered cytokine and oxidoreductase-oxidizing metal ion activities, as confirmed by Western blotting. Gene Set Enrichment Analysis identified the most enriched pathways being oxidative phosphorylation, fatty acid metabolism, reactive oxygen species, adipogenesis, and angiogenesis. In sum, loss-of-function mutation of RNF213 is a common genetic alteration in LI-IPNB tissues. RNF213 knockdown leads to increased migration and invasion of ICC cells, potentially through malfunctions of the pathways related to inflammation and energy metabolisms.
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Affiliation(s)
- Khajeelak Chiablaem
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Artit Jinawath
- Molecular Histopathology Laboratory, Department of Pathology, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Jiratchaya Nuanpirom
- Integrative Computational Bioscience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand
| | - Jantarika Kumar Arora
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Sirawit Nasaree
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Thanastha Thanomchard
- Ramathibodi Comprehensive Cancer Center, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Nilubon Singhto
- Ramathibodi Comprehensive Cancer Center, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Pamorn Chittavanich
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Bhoom Suktitipat
- Integrative Computational Bioscience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand; Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Varodom Charoensawan
- Integrative Computational Bioscience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand; Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand; Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand; Siriraj Genomics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Arthit Chairoungdua
- Department of Physiology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Jim Jinn-Chyuan Sheu
- Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan; School of Chinese Medicine, China Medical University, Taichung, Taiwan; Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kazuma Kiyotani
- Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, Thailand
| | - Yusuke Nakamura
- Cancer Precision Medicine Center, Japanese Foundation for Cancer Research, Tokyo, Japan; National Institutes of Biomedical Innovation, Health and Nutrition, Osaka, Japan
| | - Natini Jinawath
- Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; Integrative Computational Bioscience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand; Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakan, Thailand.
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5
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Yu J, Hao J, Yorek MS, Han X, Avellino A, Jiang X, Liu S, Wang J, Li B. Determination of the FABP5 expression profile in skin lesions of an IMQ-induced psoriasis mouse model using flow cytometry. STAR Protoc 2024; 5:103018. [PMID: 38613778 PMCID: PMC11026830 DOI: 10.1016/j.xpro.2024.103018] [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: 01/29/2024] [Revised: 03/14/2024] [Accepted: 03/28/2024] [Indexed: 04/15/2024] Open
Abstract
The fatty acid-binding protein 5 (FABP5) is a key player in psoriasis development. Therefore, characterizing the expression profile of FABP5 in various cell types within both layers of psoriatic skin is important. Here, we present a protocol that describes steps for an imiquimod-induced psoriasis mouse model and preparation of epidermal and dermal single-cell suspensions. We then detail procedures to detect the FABP5 expression profile in skin keratinocytes and immune cells using intracellular flow cytometry staining. For complete details on the use and execution of this protocol, please refer to Hao et al.1.
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Affiliation(s)
- Jianyu Yu
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Jiaqing Hao
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Matthew S Yorek
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Xiaochun Han
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | | | - Xingshan Jiang
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Shanshan Liu
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Jinyu Wang
- Department of Pathology, University of Iowa, Iowa City, IA, USA
| | - Bing Li
- Department of Pathology, University of Iowa, Iowa City, IA, USA.
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6
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Mathiowetz AJ, Meymand ES, Deol KK, Parlakgül G, Lange M, Pang SP, Roberts MA, Torres EF, Jorgens DM, Zalpuri R, Kang M, Boone C, Zhang Y, Morgens DW, Tso E, Zhou Y, Talukdar S, Levine TP, Ku G, Arruda AP, Olzmann JA. CLCC1 promotes hepatic neutral lipid flux and nuclear pore complex assembly. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.06.07.597858. [PMID: 38895340 PMCID: PMC11185754 DOI: 10.1101/2024.06.07.597858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Imbalances in lipid storage and secretion lead to the accumulation of hepatocyte lipid droplets (LDs) (i.e., hepatic steatosis). Our understanding of the mechanisms that govern the channeling of hepatocyte neutral lipids towards cytosolic LDs or secreted lipoproteins remains incomplete. Here, we performed a series of CRISPR-Cas9 screens under different metabolic states to uncover mechanisms of hepatic neutral lipid flux. Clustering of chemical-genetic interactions identified CLIC-like chloride channel 1 (CLCC1) as a critical regulator of neutral lipid storage and secretion. Loss of CLCC1 resulted in the buildup of large LDs in hepatoma cells and knockout in mice caused liver steatosis. Remarkably, the LDs are in the lumen of the ER and exhibit properties of lipoproteins, indicating a profound shift in neutral lipid flux. Finally, remote homology searches identified a domain in CLCC1 that is homologous to yeast Brl1p and Brr6p, factors that promote the fusion of the inner and outer nuclear envelopes during nuclear pore complex assembly. Loss of CLCC1 lead to extensive nuclear membrane herniations, consistent with impaired nuclear pore complex assembly. Thus, we identify CLCC1 as the human Brl1p/Brr6p homolog and propose that CLCC1-mediated membrane remodeling promotes hepatic neutral lipid flux and nuclear pore complex assembly.
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Affiliation(s)
- Alyssa J. Mathiowetz
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Emily S. Meymand
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kirandeep K. Deol
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Güneş Parlakgül
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Mike Lange
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Stephany P. Pang
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Melissa A. Roberts
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Emily F. Torres
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Danielle M. Jorgens
- Electron Microscope Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Reena Zalpuri
- Electron Microscope Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Misun Kang
- Electron Microscope Laboratory, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Casadora Boone
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Yaohuan Zhang
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
| | - David W. Morgens
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Emily Tso
- Merck & Co., Inc., South San Francisco, CA 94080, USA
| | | | | | - Tim P. Levine
- University College London InsYtute of Ophthalmology, Bath Street London, EC1V 9EL, UK
| | - Gregory Ku
- Diabetes Center, University of California, San Francisco, San Francisco, CA 94143, USA
- Department of Medicine, Division of Endocrinology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Ana Paula Arruda
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - James A. Olzmann
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Department of NutriYonal Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
- Chan Zuckerberg Biohub, San Francisco, CA 94158, USA
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7
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Terry AR, Hay N. Emerging targets in lipid metabolism for cancer therapy. Trends Pharmacol Sci 2024; 45:537-551. [PMID: 38762377 PMCID: PMC11162322 DOI: 10.1016/j.tips.2024.04.007] [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: 01/26/2024] [Revised: 03/31/2024] [Accepted: 04/17/2024] [Indexed: 05/20/2024]
Abstract
Cancer cells perturb lipid metabolic pathways for a variety of pro-tumorigenic functions, and deregulated cellular metabolism is a hallmark of cancer cells. Although alterations in lipid metabolism in cancer cells have been appreciated for over 20 years, there are no FDA-approved cancer treatments that target lipid-related pathways. Recent advances pertaining to cancer cell fatty acid synthesis (FAS), desaturation, and uptake, microenvironmental and dietary lipids, and lipid metabolism of tumor-infiltrating immune cells have illuminated promising clinical applications for targeting lipid metabolism. This review highlights emerging pathways and targets for tumor lipid metabolism that may soon impact clinical treatment.
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Affiliation(s)
- Alexander R Terry
- Department of Medicine, Memorial Sloan Kettering Cancer Center, 1275 York Ave, New York, NY 10065, USA.
| | - Nissim Hay
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA; Research and Development Section, Jesse Brown VA Medical Center, Chicago, IL 60612, USA.
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8
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Del Castillo J, Tool ATJ, van Leeuwen K, van Alphen FPJ, Brands MM, Suijker MH, Meijer AB, Hoogendijk AJ, Kuijpers TW. Platelet proteomic profiling in sitosterolemia suggests thrombocytopenia is driven by lipid disorder and not platelet aberrations. Blood Adv 2024; 8:2466-2477. [PMID: 38513134 PMCID: PMC11112606 DOI: 10.1182/bloodadvances.2023012018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 02/14/2024] [Accepted: 02/19/2024] [Indexed: 03/23/2024] Open
Abstract
ABSTRACT Sitosterolemia is a rare autosomal recessive genetic disorder in which patients develop hypercholesterolemia and may exhibit abnormal hematologic and/or liver test results. In this disease, dysfunction of either ABCG5 or ABCG8 results in the intestinal hyperabsorption of all sterols, including cholesterol and, more specifically, plant sterols or xenosterols, as well as in the impaired ability to excrete xenosterols into the bile. It remains unknown how and why some patients develop hematologic abnormalities. Only a few unrelated patients with hematologic abnormalities at the time of diagnosis have been reported. Here, we report on 2 unrelated pedigrees who were believed to have chronic immune thrombocytopenia as their most prominent feature. Both consanguineous families showed recessive gene variants in ABCG5, which were associated with the disease by in silico protein structure analysis and clinical segregation. Hepatosplenomegaly was absent. Thrombopoietin levels and megakaryocyte numbers in the bone marrow were normal. Metabolic analysis confirmed the presence of strongly elevated plasma levels of xenosterols. Potential platelet proteomic aberrations were longitudinally assessed following dietary restrictions combined with administration of the sterol absorption inhibitor ezetimibe. No significant effects on platelet protein content before and after the onset of treatment were demonstrated. Although we cannot exclude that lipotoxicity has a direct and platelet-specific impact in patients with sitosterolemia, our data suggest that thrombocytopenia is neither caused by a lack of megakaryocytes nor driven by proteomic aberrations in the platelets themselves.
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Affiliation(s)
- Jessica Del Castillo
- Department of Molecular Hematology, Sanquin Research, Amsterdam, The Netherlands
| | - Anton T. J. Tool
- Department of Blood Cell Research, Sanquin Research, Amsterdam, The Netherlands
| | - Karin van Leeuwen
- Department of Research Facilities, Sanquin Research, Amsterdam, The Netherlands
| | | | - Marion M. Brands
- Department of Pediatric Metabolic Diseases, Emma Children’s Hospital, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Monique H. Suijker
- Department of Pediatric Hematology, Emma Children’s Hospital, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Alexander B. Meijer
- Department of Molecular Hematology, Sanquin Research, Amsterdam, The Netherlands
| | - Arie J. Hoogendijk
- Department of Molecular Hematology, Sanquin Research, Amsterdam, The Netherlands
| | - Taco W. Kuijpers
- Department of Blood Cell Research, Sanquin Research, Amsterdam, The Netherlands
- Department of Pediatric Immunology, Rheumatology and Infectious Diseases, Emma Children’s Hospital, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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9
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Sammarco A, Guerra G, Eyme KM, Kennewick K, Qiao Y, Hokayem JE, Williams KJ, Su B, Zappulli V, Bensinger SJ, Badr CE. Targeting SCD triggers lipotoxicity of cancer cells and enhances anti-tumor immunity in breast cancer brain metastasis mouse models. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.06.592766. [PMID: 38766019 PMCID: PMC11100738 DOI: 10.1101/2024.05.06.592766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Breast cancer brain metastases (BCBM) are a significant cause of mortality and are incurable. Thus, identifying BCBM targets that reduce morbidity and mortality is critical. BCBM upregulate Stearoyl-CoA Desaturase (SCD), an enzyme that catalyzes the synthesis of monounsaturated fatty acids, suggesting a potential metabolic vulnerability of BCBM. In this study, we tested the effect of a brain-penetrant clinical-stage inhibitor of SCD (SCDi), on breast cancer cells and mouse models of BCBM. Lipidomics, qPCR, and western blot were used to study the in vitro effects of SCDi. Single-cell RNA sequencing was used to explore the effects of SCDi on cancer and immune cells in a BCBM mouse model. Pharmacological inhibition of SCD markedly reshaped the lipidome of breast cancer cells and resulted in endoplasmic reticulum stress, DNA damage, loss of DNA damage repair, and cytotoxicity. Importantly, SCDi alone or combined with a PARP inhibitor prolonged the survival of BCBM-bearing mice. When tested in a syngeneic mouse model of BCBM, scRNAseq revealed that pharmacological inhibition of SCD enhanced antigen presentation by dendritic cells, was associated with a higher interferon signaling, increased the infiltration of cytotoxic T cells, and decreased the proportion of exhausted T cells and regulatory T cells in the tumor microenvironment (TME). Additionally, pharmacological inhibition of SCD decreased engagement of immunosuppressive pathways, including the PD-1:PD-L1/PD-L2 and PVR/TIGIT axes. These findings suggest that SCD inhibition could be an effective strategy to intrinsically reduce tumor growth and reprogram anti-tumor immunity in the brain microenvironment to treat BCBM.
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10
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Obaseki E, Adebayo D, Bandyopadhyay S, Hariri H. Lipid droplets and fatty acid-induced lipotoxicity: in a nutshell. FEBS Lett 2024; 598:1207-1214. [PMID: 38281809 PMCID: PMC11126361 DOI: 10.1002/1873-3468.14808] [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: 10/09/2023] [Revised: 12/02/2023] [Accepted: 01/04/2024] [Indexed: 01/30/2024]
Abstract
Lipid droplets (LDs) are fat storage organelles that are conserved from bacteria to humans. LDs are broken down to supply cells with fatty acids (FAs) that can be used as an energy source or membrane synthesis. An overload of FAs disrupts cellular functions and causes lipotoxicity. Thus, by acting as hubs for storing excess fat, LDs prevent lipotoxicity and preserve cellular homeostasis. LD synthesis and turnover have to be precisely regulated to maintain a balanced lipid distribution and allow for cellular adaptation during stress. Here, we discuss how prolonged exposure to excess lipids affects cellular functions, and the roles of LDs in buffering cellular stress focusing on lipotoxicity.
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Affiliation(s)
- Eseiwi Obaseki
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Daniel Adebayo
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Sumit Bandyopadhyay
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
| | - Hanaa Hariri
- Department of Biological Sciences, Wayne State University, Detroit, MI, 48202 USA
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11
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Morito D. Molecular structure and function of mysterin/RNF213. J Biochem 2024; 175:495-505. [PMID: 38378744 DOI: 10.1093/jb/mvae020] [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: 12/05/2023] [Revised: 01/19/2024] [Accepted: 01/24/2024] [Indexed: 02/22/2024] Open
Abstract
Mysterin is a large intracellular protein harboring a RING finger ubiquitin ligase domain and is also referred to as RING finger protein 213 (RNF213). The author performed the first molecular cloning of the mysterin gene as the final step in genetic exploration of cerebrovascular moyamoya disease (MMD) and initiated the next round of exploration to understand its molecular and cellular functions. Although much remains unknown, accumulating findings suggest that mysterin functions in cells by targeting massive intracellular structures, such as lipid droplets (LDs) and various invasive pathogens. In the latter case, mysterin appears to directly surround and ubiquitylate the surface of pathogens and stimulate cell-autonomous antimicrobial reactions, such as xenophagy and inflammatory response. To date, multiple mutations causing MMD have been identified within and near the RING finger domain of mysterin; however, their functional relevance remains largely unknown. Besides the RING finger, mysterin harbors a dynein-like ATPase core and an RZ finger, another ubiquitin ligase domain unique to mysterin, while functional exploration of these domains has also just commenced. In this review, the author attempts to summarize the core findings regarding the molecular structure and function of the mysterin protein, with an emphasis on the perspective of MMD research.
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Affiliation(s)
- Daisuke Morito
- Department of Biochemistry, Showa University School of Medicine, Hatanodai 1-5-8, Shinagawa, Tokyo 142-0064, Japan
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12
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Nakamura M. Lipotoxicity as a therapeutic target in obesity and diabetic cardiomyopathy. JOURNAL OF PHARMACY & PHARMACEUTICAL SCIENCES : A PUBLICATION OF THE CANADIAN SOCIETY FOR PHARMACEUTICAL SCIENCES, SOCIETE CANADIENNE DES SCIENCES PHARMACEUTIQUES 2024; 27:12568. [PMID: 38706718 PMCID: PMC11066298 DOI: 10.3389/jpps.2024.12568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Accepted: 04/09/2024] [Indexed: 05/07/2024]
Abstract
Unhealthy sources of fats, ultra-processed foods with added sugars, and a sedentary lifestyle make humans more susceptible to developing overweight and obesity. While lipids constitute an integral component of the organism, excessive and abnormal lipid accumulation that exceeds the storage capacity of lipid droplets disrupts the intracellular composition of fatty acids and results in the release of deleterious lipid species, thereby giving rise to a pathological state termed lipotoxicity. This condition induces endoplasmic reticulum stress, mitochondrial dysfunction, inflammatory responses, and cell death. Recent advances in omics technologies and analytical methodologies and clinical research have provided novel insights into the mechanisms of lipotoxicity, including gut dysbiosis, epigenetic and epitranscriptomic modifications, dysfunction of lipid droplets, post-translational modifications, and altered membrane lipid composition. In this review, we discuss the recent knowledge on the mechanisms underlying the development of lipotoxicity and lipotoxic cardiometabolic disease in obesity, with a particular focus on lipotoxic and diabetic cardiomyopathy.
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Affiliation(s)
- Michinari Nakamura
- Department of Cell Biology and Molecular Medicine, Rutgers New Jersey Medical School, Rutgers Biomedical and Health Sciences, Newark, United States
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13
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Reinhard J, Starke L, Klose C, Haberkant P, Hammarén H, Stein F, Klein O, Berhorst C, Stumpf H, Sáenz JP, Hub J, Schuldiner M, Ernst R. MemPrep, a new technology for isolating organellar membranes provides fingerprints of lipid bilayer stress. EMBO J 2024; 43:1653-1685. [PMID: 38491296 PMCID: PMC11021466 DOI: 10.1038/s44318-024-00063-y] [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: 09/14/2022] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/18/2024] Open
Abstract
Biological membranes have a stunning ability to adapt their composition in response to physiological stress and metabolic challenges. Little is known how such perturbations affect individual organelles in eukaryotic cells. Pioneering work has provided insights into the subcellular distribution of lipids in the yeast Saccharomyces cerevisiae, but the composition of the endoplasmic reticulum (ER) membrane, which also crucially regulates lipid metabolism and the unfolded protein response, remains insufficiently characterized. Here, we describe a method for purifying organelle membranes from yeast, MemPrep. We demonstrate the purity of our ER membrane preparations by proteomics, and document the general utility of MemPrep by isolating vacuolar membranes. Quantitative lipidomics establishes the lipid composition of the ER and the vacuolar membrane. Our findings provide a baseline for studying membrane protein biogenesis and have important implications for understanding the role of lipids in regulating the unfolded protein response (UPR). The combined preparative and analytical MemPrep approach uncovers dynamic remodeling of ER membranes in stressed cells and establishes distinct molecular fingerprints of lipid bilayer stress.
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Affiliation(s)
- John Reinhard
- Saarland University, Medical Biochemistry and Molecular Biology, Homburg, Germany
- Saarland University, Preclinical Center for Molecular Signaling (PZMS), Homburg, Germany
| | - Leonhard Starke
- Saarland University, Theoretical Physics and Center for Biophysics, Saarbrücken, Germany
| | | | - Per Haberkant
- EMBL Heidelberg, Proteomics Core Facility, Heidelberg, Germany
| | | | - Frank Stein
- EMBL Heidelberg, Proteomics Core Facility, Heidelberg, Germany
| | - Ofir Klein
- Weizmann Institute of Science, Department of Molecular Genetics, Rehovot, Israel
| | - Charlotte Berhorst
- Saarland University, Medical Biochemistry and Molecular Biology, Homburg, Germany
- Saarland University, Preclinical Center for Molecular Signaling (PZMS), Homburg, Germany
| | - Heike Stumpf
- Saarland University, Medical Biochemistry and Molecular Biology, Homburg, Germany
- Saarland University, Preclinical Center for Molecular Signaling (PZMS), Homburg, Germany
| | - James P Sáenz
- Technische Universität Dresden, B CUBE, Dresden, Germany
| | - Jochen Hub
- Saarland University, Theoretical Physics and Center for Biophysics, Saarbrücken, Germany
| | - Maya Schuldiner
- Weizmann Institute of Science, Department of Molecular Genetics, Rehovot, Israel
| | - Robert Ernst
- Saarland University, Medical Biochemistry and Molecular Biology, Homburg, Germany.
- Saarland University, Preclinical Center for Molecular Signaling (PZMS), Homburg, Germany.
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14
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Köberlin MS, Fan Y, Liu C, Chung M, Pinto AFM, Jackson PK, Saghatelian A, Meyer T. A fast-acting lipid checkpoint in G1 prevents mitotic defects. Nat Commun 2024; 15:2441. [PMID: 38499565 PMCID: PMC10948896 DOI: 10.1038/s41467-024-46696-9] [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: 07/24/2023] [Accepted: 03/06/2024] [Indexed: 03/20/2024] Open
Abstract
Lipid synthesis increases during the cell cycle to ensure sufficient membrane mass, but how insufficient synthesis restricts cell-cycle entry is not understood. Here, we identify a lipid checkpoint in G1 phase of the mammalian cell cycle by using live single-cell imaging, lipidome, and transcriptome analysis of a non-transformed cell. We show that synthesis of fatty acids in G1 not only increases lipid mass but extensively shifts the lipid composition to unsaturated phospholipids and neutral lipids. Strikingly, acute lowering of lipid synthesis rapidly activates the PERK/ATF4 endoplasmic reticulum (ER) stress pathway that blocks cell-cycle entry by increasing p21 levels, decreasing Cyclin D levels, and suppressing Retinoblastoma protein phosphorylation. Together, our study identifies a rapid anticipatory ER lipid checkpoint in G1 that prevents cells from starting the cell cycle as long as lipid synthesis is low, thereby preventing mitotic defects, which are triggered by low lipid synthesis much later in mitosis.
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Affiliation(s)
- Marielle S Köberlin
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Baxter Laboratory, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
| | - Yilin Fan
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pathology and Center for Cancer Research, Massachusetts General Hospital and Harvard Medical School, Boston, MA, 02114, USA
| | - Chad Liu
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Chan Zuckerberg Biohub, San Francisco, CA, 94111, USA
| | - Mingyu Chung
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Antonio F M Pinto
- Clayton Foundation Laboratories for Peptide Biology and Mass Spectrometry Core, Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Peter K Jackson
- Baxter Laboratory, Department of Microbiology & Immunology, Stanford University School of Medicine, Stanford, CA, 94305, USA
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Alan Saghatelian
- Clayton Foundation Laboratories for Peptide Biology and Mass Spectrometry Core, Salk Institute for Biological Studies, La Jolla, CA, 92037, USA
| | - Tobias Meyer
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA.
- Department of Cell and Developmental Biology, Weill Cornell Medicine, New York, NY, 10065, USA.
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15
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Zhang B, Li J, Zeng C, Tao C, He Q, Liu C, Zheng Z, Zhao Z, Mou S, Sun W, Wang J, Zhang Q, Wang R, Zhang Y, Ge P, Zhang D. Nonalcoholic fatty liver disease is an independent risk factor for ischemic stroke after revascularization in patients with Moyamoya disease: a prospective cohort study. Lipids Health Dis 2024; 23:80. [PMID: 38494486 PMCID: PMC10944598 DOI: 10.1186/s12944-024-02065-5] [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: 10/16/2023] [Accepted: 02/27/2024] [Indexed: 03/19/2024] Open
Abstract
BACKGROUND The study aimed to investigate the association between nonalcoholic fatty liver disease (NAFLD) and ischemic stroke events after revascularization in patients with Moyamoya disease (MMD). METHODS This study prospectively enrolled 275 MMD patients from September 2020 to December 2021. Patients with alcoholism and other liver diseases were excluded. NAFLD was confirmed by CT imaging or abdominal ultrasonography. Stroke events and modified Rankin Scale (mRS) scores at the latest follow-up were compared between the two groups. RESULTS A total of 275 patients were enrolled in the study, among which 65 were diagnosed with NAFLD. Univariate logistic regression analysis showed that NAFLD (P = 0.029) was related to stroke events. Multivariate logistic regression analysis showed that NAFLD is a predictor of postoperative stroke in MMD patients (OR = 27.145, 95% CI = 2.031-362.81, P = 0.013). Kaplan-Meier analysis showed that compared with MMD patients with NAFLD, patients in the control group had a longer stroke-free time (P = 0.004). Univariate Cox analysis showed that NAFLD (P = 0.016) was associated with ischemic stroke during follow-up in patients with MMD. Multivariate Cox analysis showed that NAFLD was an independent risk factor for stroke in patients with MMD (HR = 10.815, 95% CI = 1.259-92.881, P = 0.030). Furthermore, fewer patients in the NAFLD group had good neurologic status (mRS score ≤ 2) than the control group (P = 0.005). CONCLUSION NAFLD was an independent risk factor for stroke in patients with MMD after revascularization and worse neurological function outcomes.
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Affiliation(s)
- Bojian Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Junsheng Li
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Chaofan Zeng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Chuming Tao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Qiheng He
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Chenglong Liu
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Zhiyao Zheng
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Zhikang Zhao
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Siqi Mou
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Wei Sun
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Jia Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Qian Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Rong Wang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Yan Zhang
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, China
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China
| | - Peicong Ge
- Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
- China National Clinical Research Center for Neurological Diseases, Beijing, China.
- Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China.
- Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China.
- Beijing Translational Engineering Center for 3D Printer in Clinical Neuroscience, Beijing, China.
| | - Dong Zhang
- Department of Neurosurgery, Beijing Hospital, National Center of Gerontology, Beijing, 100730, China.
- Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing, China.
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16
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Foster J, McPhee M, Yue L, Dellaire G, Pelech S, Ridgway ND. Lipid- and phospho-regulation of CTP:Phosphocholine Cytidylyltransferase α association with nuclear lipid droplets. Mol Biol Cell 2024; 35:ar33. [PMID: 38170618 PMCID: PMC10916874 DOI: 10.1091/mbc.e23-09-0354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024] Open
Abstract
Fatty acids stored in triacylglycerol-rich lipid droplets are assembled with a surface monolayer composed primarily of phosphatidylcholine (PC). Fatty acids stimulate PC synthesis by translocating CTP:phosphocholine cytidylyltransferase (CCT) α to the inner nuclear membrane, nuclear lipid droplets (nLD) and lipid associated promyelocytic leukemia (PML) structures (LAPS). Huh7 cells were used to identify how CCTα translocation onto these nuclear structures are regulated by fatty acids and phosphorylation of its serine-rich P-domain. Oleate treatment of Huh7 cells increased nLDs and LAPS that became progressively enriched in CCTα. In cells expressing the phosphatidic acid phosphatase Lipin1α or 1β, the expanded pool of nLDs and LAPS had a proportional increase in associated CCTα. In contrast, palmitate induced few nLDs and LAPS and inhibited the oleate-dependent translocation of CCTα without affecting total nLDs. Phospho-memetic or phospho-null mutations in the P-domain revealed that a 70% phosphorylation threshold, rather than site-specific phosphorylation, regulated CCTα association with nLDs and LAPS. In vitro candidate kinase and inhibitor studies in Huh7 cells identified cyclin-dependent kinase (CDK) 1 and 2 as putative P-domain kinases. In conclusion, CCTα translocation onto nLDs and LAPS is dependent on available surface area and fatty acid composition, as well as threshold phosphorylation of the P-domain potentially involving CDKs.
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Affiliation(s)
- Jason Foster
- Departments of Pediatrics and Biochemistry & Molecular Biology, Atlantic Research Centre, and
| | - Michael McPhee
- Departments of Pediatrics and Biochemistry & Molecular Biology, Atlantic Research Centre, and
| | - Lambert Yue
- Division of Neurology, Department of Medicine, University of British Columbia, Vancouver, BC, Canada V6T 2B5
| | - Graham Dellaire
- Departments of Pathology and Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada B3H4R2
| | - Steven Pelech
- Division of Neurology, Department of Medicine, University of British Columbia, Vancouver, BC, Canada V6T 2B5
- Kinexus Bioinformatics Corporation, Vancouver, BC, Canada V6P 6T3
| | - Neale D. Ridgway
- Departments of Pediatrics and Biochemistry & Molecular Biology, Atlantic Research Centre, and
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17
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Mathiowetz AJ, Olzmann JA. Lipid droplets and cellular lipid flux. Nat Cell Biol 2024; 26:331-345. [PMID: 38454048 PMCID: PMC11228001 DOI: 10.1038/s41556-024-01364-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 01/24/2024] [Indexed: 03/09/2024]
Abstract
Lipid droplets are dynamic organelles that store neutral lipids, serve the metabolic needs of cells, and sequester lipids to prevent lipotoxicity and membrane damage. Here we review the current understanding of the mechanisms of lipid droplet biogenesis and turnover, the transfer of lipids and metabolites at membrane contact sites, and the role of lipid droplets in regulating fatty acid flux in lipotoxicity and cell death.
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Affiliation(s)
- Alyssa J Mathiowetz
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, USA
| | - James A Olzmann
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA.
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA, USA.
- Chan Zuckerberg Biohub - San Francisco, San Francisco, CA, USA.
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18
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Wang R, Zhang J, Ren H, Qi S, Xie L, Xie H, Shang Z, Liu C. Dysregulated palmitic acid metabolism promotes the formation of renal calcium-oxalate stones through ferroptosis induced by polyunsaturated fatty acids/phosphatidic acid. Cell Mol Life Sci 2024; 81:85. [PMID: 38345762 PMCID: PMC10861707 DOI: 10.1007/s00018-024-05145-y] [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: 10/07/2023] [Revised: 01/04/2024] [Accepted: 01/25/2024] [Indexed: 02/15/2024]
Abstract
The pathogenesis of renal calcium-oxalate (CaOx) stones is complex and influenced by various metabolic factors. In parallel, palmitic acid (PA) has been identified as an upregulated lipid metabolite in the urine and serum of patients with renal CaOx stones via untargeted metabolomics. Thus, this study aimed to mechanistically assess whether PA is involved in stone formation. Lipidomics analysis of PA-treated renal tubular epithelial cells compared with the control samples revealed that α-linoleic acid and α-linolenic acid were desaturated and elongated, resulting in the formation of downstream polyunsaturated fatty acids (PUFAs). In correlation, the levels of fatty acid desaturase 1 and 2 (FADS1 and FADS2) and peroxisome proliferator-activated receptor α (PPARα) in these cells treated with PA were increased relative to the control levels, suggesting that PA-induced upregulation of PPARα, which in turn upregulated these two enzymes, forming the observed PUFAs. Lipid peroxidation occurred in these downstream PUFAs under oxidative stress and Fenton Reaction. Furthermore, transcriptomics analysis revealed significant changes in the expression levels of ferroptosis-related genes in PA-treated renal tubular epithelial cells, induced by PUFA peroxides. In addition, phosphatidyl ethanolamine binding protein 1 (PEBP1) formed a complex with 15-lipoxygenase (15-LO) to exacerbate PUFA peroxidation under protein kinase C ζ (PKC ζ) phosphorylation, and PKC ζ was activated by phosphatidic acid derived from PA. In conclusion, this study found that the formation of renal CaOx stones is promoted by ferroptosis of renal tubular epithelial cells resulting from PA-induced dysregulation of PUFA and phosphatidic acid metabolism, and PA can promote the renal adhesion and deposition of CaOx crystals by injuring renal tubular epithelial cells, consequently upregulating adhesion molecules. Accordingly, this study provides a new theoretical basis for understanding the correlation between fatty acid metabolism and the formation of renal CaOx stones, offering potential targets for clinical applications.
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Affiliation(s)
- Rui Wang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
- Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Jingdong Zhang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Haotian Ren
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Shiyong Qi
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Linguo Xie
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Haijie Xie
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China
| | - Zhiqun Shang
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.
| | - Chunyu Liu
- Department of Urology, Tianjin Institute of Urology, The Second Hospital of Tianjin Medical University, Tianjin, China.
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19
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Brunet T, Zott B, Lieftüchter V, Lenz D, Schmidt A, Peters P, Kopajtich R, Zaddach M, Zimmermann H, Hüning I, Ballhausen D, Staufner C, Bianzano A, Hughes J, Taylor RW, McFarland R, Devlin A, Mihaljević M, Barišić N, Rohlfs M, Wilfling S, Sondheimer N, Hewson S, Marinakis NM, Kosma K, Traeger-Synodinos J, Elbracht M, Begemann M, Trepels-Kottek S, Hasan D, Scala M, Capra V, Zara F, van der Ven AT, Driemeyer J, Apitz C, Krämer J, Strong A, Hakonarson H, Watson D, Mayr JA, Prokisch H, Meitinger T, Borggraefe I, Spiegler J, Baric I, Paolini M, Gerstl L, Wagner M. De novo variants in RNF213 are associated with a clinical spectrum ranging from Leigh syndrome to early-onset stroke. Genet Med 2024; 26:101013. [PMID: 37924258 DOI: 10.1016/j.gim.2023.101013] [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: 06/20/2023] [Revised: 10/26/2023] [Accepted: 10/29/2023] [Indexed: 11/06/2023] Open
Abstract
PURPOSE RNF213, encoding a giant E3 ubiquitin ligase, has been recognized for its role as a key susceptibility gene for moyamoya disease. Case reports have also implicated specific variants in RNF213 with an early-onset form of moyamoya disease with full penetrance. We aimed to expand the phenotypic spectrum of monogenic RNF213-related disease and to evaluate genotype-phenotype correlations. METHODS Patients were identified through reanalysis of exome sequencing data of an unselected cohort of unsolved pediatric cases and through GeneMatcher or ClinVar. Functional characterization was done by proteomics analysis and oxidative phosphorylation enzyme activities using patient-derived fibroblasts. RESULTS We identified 14 individuals from 13 unrelated families with (de novo) missense variants in RNF213 clustering within or around the Really Interesting New Gene (RING) domain. Individuals presented either with early-onset stroke (n = 11) or with Leigh syndrome (n = 3). No genotype-phenotype correlation could be established. Proteomics using patient-derived fibroblasts revealed no significant differences between clinical subgroups. 3D modeling revealed a clustering of missense variants in the tertiary structure of RNF213 potentially affecting zinc-binding suggesting a gain-of-function or dominant negative effect. CONCLUSION De novo missense variants in RNF213 clustering in the E3 RING or other regions affecting zinc-binding lead to an early-onset syndrome characterized by stroke or Leigh syndrome.
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Affiliation(s)
- Theresa Brunet
- Technical University of Munich, School of Medicine, Institute of Human Genetics, Munich, Germany; Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr von Hauner Children's Hospital, LMU Hospital, Ludwig-Maximilians-University, Munich, Germany.
| | - Benedikt Zott
- Department of Neuroradiolgy, TUM School of Medicine, Technical University of Munich, Munich, Germany; TUM Institute for Advanced Study, Technical University of Munich, Garching, Germany
| | - Victoria Lieftüchter
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Dominic Lenz
- Centre for Paediatric and Adolescent Medicine, Division of Neuropaediatric and Paediatric Metabolic Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Axel Schmidt
- Institute of Human Genetics, School of Medicine and University Hospital Bonn, University of Bonn, Bonn, Germany
| | - Philipp Peters
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Robert Kopajtich
- Technical University of Munich, School of Medicine, Institute of Human Genetics, Munich, Germany; Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Malin Zaddach
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Hanna Zimmermann
- Institute of Neuroradiology, University Hospital, LMU Munich, Munich, Germany
| | - Irina Hüning
- Institute of Human Genetics, University of Lübeck, Lübeck, Germany
| | - Diana Ballhausen
- Pediatric Metabolic Unit, Pediatrics, Woman-Mother-Child Department, University of Lausanne and University Hospital of Lausanne, Lausanne, Switzerland
| | - Christian Staufner
- Centre for Paediatric and Adolescent Medicine, Division of Neuropaediatric and Paediatric Metabolic Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Alyssa Bianzano
- Centre for Paediatric and Adolescent Medicine, Division of Neuropaediatric and Paediatric Metabolic Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - Joanne Hughes
- National Centre for Inherited Metabolic Disorders, Children's Health Ireland at Temple Street, Dublin, Ireland
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences Newcastle University, Newcastle upon Tyne, United Kingdom; NHS Highly Specialised Services for Rare Mitochondrial Disorders, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom
| | - Robert McFarland
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences Newcastle University, Newcastle upon Tyne, United Kingdom; NHS Highly Specialised Services for Rare Mitochondrial Disorders, Royal Victoria Infirmary, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, United Kingdom; Department of Paediatric Neurology, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, High Heaton, Newcastle upon Tyne, United Kingdom
| | - Anita Devlin
- Department of Paediatric Neurology, Great North Children's Hospital, Newcastle upon Tyne Hospitals NHS Foundation Trust, High Heaton, Newcastle upon Tyne, United Kingdom
| | - Mihaela Mihaljević
- Department of Paediatrics, University Hospital Center Zagreb, Zagreb, Croatia
| | - Nina Barišić
- Department of Pediatrics, Children's Hospital Srebrnjak, Zagreb, Croatia
| | - Meino Rohlfs
- Department of Pediatrics, Dr. von Hauner Children's Hospital, University Hospital, Ludwig-Maximilians-Universität München, Munich, Germany
| | | | - Neal Sondheimer
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada; Program in Genetics and Genome Biology Program, Sick Kids Research Institute, Toronto, Ontario, Canada
| | - Stacy Hewson
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Nikolaos M Marinakis
- Laboratory of Medical Genetics, St. Sophia's Children's Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantina Kosma
- Laboratory of Medical Genetics, St. Sophia's Children's Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Joanne Traeger-Synodinos
- Laboratory of Medical Genetics, St. Sophia's Children's Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Miriam Elbracht
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Matthias Begemann
- Institute for Human Genetics and Genomic Medicine, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Sonja Trepels-Kottek
- Department of Pediatrics, Division of Neonatology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Dimah Hasan
- Department of Neuroradiology, Medical Faculty, RWTH Aachen University, Aachen, Germany
| | - Marcello Scala
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy; Medical Genetics Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Valeria Capra
- Genomics and Clinical Genetics, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Federico Zara
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy; Medical Genetics Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Amelie T van der Ven
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joenna Driemeyer
- Department of Pediatrics, University Medical Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Christian Apitz
- Division of Pediatric Cardiology, Children's Hospital, University of Ulm, Ulm, Germany
| | - Johannes Krämer
- Division of Pediatric Neurology and Inborn Errors of Metabolism, Children's Hospital, University of Ulm, Ulm, Germany
| | - Alanna Strong
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA; The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA
| | - Hakon Hakonarson
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, PA; The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA; Division of Pulmonary Medicine, Children's Hospital of Philadelphia, Philadelphia, PA
| | - Deborah Watson
- The Center for Applied Genomics, Children's Hospital of Philadelphia, Philadelphia, PA; Department of Pediatrics, Perelman School of Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA
| | - Johannes A Mayr
- University Children's Hospital, Paracelsus Medical University (PMU), Salzburg, Austria
| | - Holger Prokisch
- Technical University of Munich, School of Medicine, Institute of Human Genetics, Munich, Germany; Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
| | - Thomas Meitinger
- Technical University of Munich, School of Medicine, Institute of Human Genetics, Munich, Germany
| | - Ingo Borggraefe
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. von Hauner Children's Hospital, Ludwig-Maximilian-University of Munich, Munich, Germany; Comprehensive Epilepsy Center, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Juliane Spiegler
- Department of Pediatrics, University Hospital of Würzburg, Würzburg, Germany
| | - Ivo Baric
- Department of Paediatrics, University Hospital Center Zagreb and University of Zagreb School of Medicine, Zagreb, Croatia
| | - Marco Paolini
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Lucia Gerstl
- Division of Pediatric Neurology, Developmental Medicine and Social Pediatrics, Department of Pediatrics, Dr. von Hauner Children's Hospital, Ludwig-Maximilian-University of Munich, Munich, Germany
| | - Matias Wagner
- Technical University of Munich, School of Medicine, Institute of Human Genetics, Munich, Germany; Department of Pediatric Neurology and Developmental Medicine and LMU Center for Children with Medical Complexity, Dr von Hauner Children's Hospital, LMU Hospital, Ludwig-Maximilians-University, Munich, Germany; Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany
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20
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Fang J, Yang X, Ni J. RNF213 in moyamoya disease: Genotype-phenotype association and the underlying mechanism. Chin Med J (Engl) 2024:00029330-990000000-00928. [PMID: 38243713 DOI: 10.1097/cm9.0000000000002985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Indexed: 01/21/2024] Open
Abstract
ABSTRACT Moyamoya disease (MMD) is a cerebrovascular disorder characterized by a steno-occlusive internal carotid artery and compensatory vascular network formation. Although the precise pathogenic mechanism remains elusive, genetic association studies have identified RNF213 as the principal susceptibility gene for MMD, with the single nucleotide polymorphism p.R4810K recognized as the founder variant predominantly in the Asian populations. Distinct genotype-phenotype correlations are observable in RNF213-related MMD. The clinical manifestations linked to p.R4810K bear commonalities within Asian cohort, including familial predisposition, earlier age of onset, ischemic episodes, and involvement of the posterior cerebral artery (PCA). However, despite these shared phenotypic characteristics, there is significant heterogeneity in RNF213-related MMD presentations. This diversity manifests as variations across ethnic groups, inconsistent clinical symptoms and prognosis, and occurrence of other vasculopathies involving RNF213. This heterogeneity, in conjunction with the observed low disease penetrance of RNF213 mutations, suggests that the presence of these mutations may not be sufficient to cause MMD, underscoring the potential influence of other genetic or environmental factors. Although the current research might not have fully identified these additional contributors, experimental evidence points toward the involvement of RNF213 in angiogenesis, lipid metabolism, and the immune response. Future research is required to unveil the molecular mechanisms and identify the factors that synergize with RNF213 in the pathogenesis of MMD.
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Affiliation(s)
- Jianxun Fang
- Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xinzhuang Yang
- Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jun Ni
- Department of Neurology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
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21
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Zhang S, Tian W, Duan X, Zhang Q, Cao L, Liu C, Li G, Wang Z, Zhang J, Li J, Yang L, Gao Y, Xu Y, Liu J, Yan J, Cui J, Feng L, Liu C, Shen Y, Qi Z. Melatonin attenuates diabetic cardiomyopathy by increasing autophagy of cardiomyocytes via regulation of VEGF-B/GRP78/PERK signaling pathway. Cardiovasc Diabetol 2024; 23:19. [PMID: 38195474 PMCID: PMC10777497 DOI: 10.1186/s12933-023-02078-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 11/27/2023] [Indexed: 01/11/2024] Open
Abstract
AIMS Diabetic cardiomyopathy (DCM) is a major cause of mortality in patients with diabetes, and the potential strategies for treating DCM are insufficient. Melatonin (Mel) has been shown to attenuate DCM, however, the underlying mechanism remains unclear. The role of vascular endothelial growth factor-B (VEGF-B) in DCM is little known. In present study, we aimed to investigate whether Mel alleviated DCM via regulation of VEGF-B and explored its underlying mechanisms. METHODS AND RESULTS We found that Mel significantly alleviated cardiac dysfunction and improved autophagy of cardiomyocytes in type 1 diabetes mellitus (T1DM) induced cardiomyopathy mice. VEGF-B was highly expressed in DCM mice in comparison with normal mice, and its expression was markedly reduced after Mel treatment. Mel treatment diminished the interaction of VEGF-B and Glucose-regulated protein 78 (GRP78) and reduced the interaction of GRP78 and protein kinase RNA -like ER kinase (PERK). Furthermore, Mel increased phosphorylation of PERK and eIF2α, then up-regulated the expression of ATF4. VEGF-B-/- mice imitated the effect of Mel on wild type diabetic mice. Interestingly, injection with Recombinant adeno-associated virus serotype 9 (AAV9)-VEGF-B or administration of GSK2656157 (GSK), an inhibitor of phosphorylated PERK abolished the protective effect of Mel on DCM. Furthermore, rapamycin, an autophagy agonist displayed similar effect with Mel treatment; while 3-Methyladenine (3-MA), an autophagy inhibitor neutralized the effect of Mel on high glucose-treated neonatal rat ventricular myocytes. CONCLUSIONS These results demonstrated that Mel attenuated DCM via increasing autophagy of cardiomyocytes, and this cardio-protective effect of Mel was dependent on VEGF-B/GRP78/PERK signaling pathway.
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Affiliation(s)
- Shengzheng Zhang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Wencong Tian
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, 300000, China
| | - Xianxian Duan
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Qian Zhang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Lei Cao
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, 300000, China
| | - Chunlei Liu
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Guangru Li
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Ziwei Wang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Junwei Zhang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jing Li
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Liang Yang
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, 300000, China
| | - Yang Gao
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, 300000, China
| | - Yang Xu
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jie Liu
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jie Yan
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Jianlin Cui
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Lifeng Feng
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China
| | - Chang Liu
- School of Medical Technology, Tianjin Medical University, Tianjin, 300203, China
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, 571199, China
| | - Yanna Shen
- School of Medical Technology, Tianjin Medical University, Tianjin, 300203, China.
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, 571199, China.
| | - Zhi Qi
- Department of Molecular Pharmacology, School of Medicine, Nankai University, Tianjin, 300071, China.
- Tianjin Key Laboratory of General Surgery in Construction, Tianjin Union Medical Center, Tianjin, 300000, China.
- Xinjiang Production and Construction Corps Hospital, Xinjiang, 830092, China.
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22
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Rojas ML, Muñoz JP, Flores-Martín J, Sànchez-Fernàndez-de-Landa P, Cruz Del Puerto M, Genti-Raimondi S, Zorzano A. StarD7 deficiency switches on glycolysis and promotes mitophagy flux in C2C12 myoblasts. FEBS J 2024; 291:338-357. [PMID: 37846201 DOI: 10.1111/febs.16979] [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: 05/03/2023] [Revised: 09/01/2023] [Accepted: 10/13/2023] [Indexed: 10/18/2023]
Abstract
StarD7 is a member of the START protein family required for phosphatidylcholine delivery to the mitochondria, thus key to maintain mitochondrial structure. Its deficiency has been associated with an impairment of cellular processes, such as proliferation and migration, and it has also been reported that it is needed in myogenic differentiation. Here, we show that StarD7 deficiency in C2C12 muscle cells results in the accumulation of abnormal mitochondria, a reduced number of mitochondria per cell area and increased glycolysis. In addition, StarD7-deficient cells undergo an increase in mitochondria-ER contact sites, reduced connexin 43 expression, and disturbances in lipid handling, evidenced by lipid droplet accumulation and decreased levels in phosphatidylserine synthase 1 and 2 expression. Interestingly, StarD7-deficient cells showed alterations in mitophagy markers. We observed accumulation of LC3B-II and BNIP3 proteins in mitochondria-enriched fractions and accumulation of autophagolysosomal and lysosomal vesicles in StarD7-deficient cells. Furthermore, live-cell imaging experiments of StarD7 knockdown cells expressing mitochondria-targeted mKeima indicated an enhanced mitochondria delivery into lysosomes. Importantly, StarD7 reconstitution in StarD7-deficient cells restores LC3B-II expression in mitochondria-enriched fractions at similar levels to those observed in control cells. Collectively, these findings suggest that StarD7-deficient C2C12 myoblasts are associated with altered cristae structure, disturbances in neutral lipid accumulation, glucose metabolism, and increased mitophagy flux. The alterations mentioned above allow for the maintenance of mitochondrial function.
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Affiliation(s)
- María L Rojas
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Córdoba, Argentina
| | - Juan Pablo Muñoz
- Institut d' Investigació Biomèdica (IIB) Sant Pau, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Jésica Flores-Martín
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Córdoba, Argentina
| | - Paula Sànchez-Fernàndez-de-Landa
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Spain
- Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Spain
| | - Mariano Cruz Del Puerto
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Córdoba, Argentina
| | - Susana Genti-Raimondi
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas (CONICET), Centro de Investigaciones en Bioquímica Clínica e Inmunología (CIBICI), Córdoba, Argentina
| | - Antonio Zorzano
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Spain
- Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Spain
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23
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Lim SS, Park S, Oh BH, Jung K, Bae JW, Bae DH. RNF213 vasculopathy manifested in various forms within a family: A case report. Medicine (Baltimore) 2023; 102:e36627. [PMID: 38115307 PMCID: PMC10727589 DOI: 10.1097/md.0000000000036627] [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: 09/16/2023] [Accepted: 11/22/2023] [Indexed: 12/21/2023] Open
Abstract
RATIONALE The ring finger protein 213 (RNF213) p.R4810K variant has been identified as being associated with Moyamoya disease (MMD), a condition that is more prevalent in East Asians. This association extends beyond cerebral vessels and has been implicated in coronary artery disease. PATIENT CONCERNS A 36-year-old female was admitted to the emergency room with chest pain. Although the patient had no known underlying conditions or risk factors for atherosclerosis, she was diagnosed with unstable angina and underwent percutaneous coronary intervention. Given her older sister's ongoing treatment for MMD, it was suspected that the patient's coronary artery disease might be linked to the MMD-associated gene mutation. DIAGNOSES Coronary angiography revealed 80% narrowing of the proximal left anterior descending artery. Based on clinical symptoms and coronary angiography, we diagnosed it as unstable angina. INTERVENTION Due to the family history of MMD and detection of the RNF213 p.R4810K heterozygous variant in the patient's older sister, genetic counseling was recommended. Next-generation sequencing for vascular diseases was performed. OUTCOMES Genetic testing confirmed the presence of an RNF213 p.R4810K heterozygous variant in the patient, mirroring that in her sister. An RNF213 p.C4397R heterozygous variant was identified concomitantly, although it was categorized as a variant of uncertain significance. Coronary artery disease has been attributed to the RNF213 p.R4810K variant. LESSONS Although MMD is rare in Western populations, it is more common in East Asian populations. Traditionally, MMD diagnoses have focused solely on the cerebral vessels without guidelines for the assessment of other vascular involvements. This familial case underscores the fact that a single genetic mutation can manifest in diverse ways in different diseases. Hence, the need and regularity of systemic vessel screening should be thoughtfully considered in such a context.
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Affiliation(s)
- Seong-Soo Lim
- Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
| | - Sangshin Park
- Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
| | - Byeong Ho Oh
- Department of Neurosurgery, Chungbuk National University Hospital, Cheongju, South Korea
| | - Kiwook Jung
- Department of Laboratory Medicine, Chungbuk National University Hospital, Cheongju, South Korea
| | - Jang-Whan Bae
- Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
- Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
| | - Dae-Hwan Bae
- Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, South Korea
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24
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Gawden-Bone CM, Lehner PJ, Volkmar N. As a matter of fat: Emerging roles of lipid-sensitive E3 ubiquitin ligases. Bioessays 2023; 45:e2300139. [PMID: 37890275 DOI: 10.1002/bies.202300139] [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: 07/28/2023] [Revised: 09/22/2023] [Accepted: 09/26/2023] [Indexed: 10/29/2023]
Abstract
The dynamic structure and composition of lipid membranes need to be tightly regulated to control the vast array of cellular processes from cell and organelle morphology to protein-protein interactions and signal transduction pathways. To maintain membrane integrity, sense-and-response systems monitor and adjust membrane lipid composition to the ever-changing cellular environment, but only a relatively small number of control systems have been described. Here, we explore the emerging role of the ubiquitin-proteasome system in monitoring and maintaining membrane lipid composition. We focus on the ER-resident RNF145 E3 ubiquitin ligase, its role in regulating adiponectin receptor 2 (ADIPOR2), its lipid hydrolase substrate, and the broader implications for understanding the homeostatic processes that fine-tune cellular membrane composition.
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Affiliation(s)
- Christian M Gawden-Bone
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Paul J Lehner
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Norbert Volkmar
- Institute for Molecular Systems Biology (IMSB), ETH Zürich, Zürich, Switzerland
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25
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Chida-Nagai A, Tonoki H, Makita N, Ishiyama H, Ihara M, Maruo Y, Tsujioka T, Sasaki D, Izumi G, Yamazawa H, Kato N, Ito M, Fujimura M, Sasaki O, Takeda A. A Noonan-like pediatric patient with a de novo CBL pathogenic variant and an RNF213 polymorphism p.R4810K presenting with cardiopulmonary arrest due to left main coronary artery ostial atresia. Am J Med Genet A 2023; 191:2837-2842. [PMID: 37554039 DOI: 10.1002/ajmg.a.63370] [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: 02/15/2023] [Revised: 07/06/2023] [Accepted: 07/29/2023] [Indexed: 08/10/2023]
Abstract
Left main coronary artery ostial atresia (LMCAOA) is an extremely rare condition. Here, we report the case of a 14-year-old boy with Noonan syndrome-like disorder in whom LMCAOA was detected following cardiopulmonary arrest. The patient had been diagnosed with Noonan syndrome-like disorder with a pathogenic splice site variant of CBL c.1228-2 A > G. He suddenly collapsed when he was running. After administering two electric shocks using an automated external defibrillator, the patient's heartbeat resumed. Cardiac catheterization confirmed the diagnosis of LMCAOA. Left main coronary artery angioplasty was performed. The patient was discharged without neurological sequelae. Brain magnetic resonance imaging revealed asymptomatic Moyamoya disease. In addition, RNF213 c.14429 G > A p.R4810K was identified. There are no reports on congenital coronary malformations of compound variations of RNF213 and CBL. In contrast, the RNF213 p.R4810K polymorphism has been established as a risk factor for angina pectoris and myocardial infarction in adults, and several congenital coronary malformations due to genetic abnormalities within the RAS/MAPK signaling pathway have been reported. This report aims to highlight the risk of sudden death in patients with RASopathy and RNF213 p.R4810K polymorphism and emphasize the significance of actively searching for coronary artery morphological abnormalities in these patients.
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Affiliation(s)
- Ayako Chida-Nagai
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Hidefumi Tonoki
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
- Medical Genetics Center, Tenshi Hospital, Sapporo, Japan
| | - Naomasa Makita
- Omics Research Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Hiroyuki Ishiyama
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Yuji Maruo
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Takao Tsujioka
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Daisuke Sasaki
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Gaku Izumi
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Hirokuni Yamazawa
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
| | - Nobuyasu Kato
- Department of Cardiovascular Surgery, Hokkaido University, Sapporo, Japan
| | - Masaki Ito
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Miki Fujimura
- Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Osamu Sasaki
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
- Department of Pediatrics, Tenshi Hospital, Sapporo, Japan
| | - Atsuhito Takeda
- Department of Pediatrics, Hokkaido University Hospital, Sapporo, Japan
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26
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Jeong YJ, Rogers TJ, Anderson CE, Lien EC. Tumor lipid metabolism: a mechanistic link between diet and cancer progression. Curr Opin Biotechnol 2023; 84:102993. [PMID: 37716318 PMCID: PMC10872979 DOI: 10.1016/j.copbio.2023.102993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/01/2023] [Accepted: 08/15/2023] [Indexed: 09/18/2023]
Abstract
The potential for 'anti-cancer' diets to markedly alter cancer risk and prognosis has captured the imagination of patients, physicians, and researchers alike, but many of these dietary recommendations come from correlative studies that attribute certain diets to altered cancer risk. While provocative, little is known about the molecular mechanisms behind how these dietary interventions impact cancer progression. Within this context, however, changes in tumor lipid metabolism are emerging as a key contributor. In this review, we examine the current understanding of lipid metabolism in the tumor microenvironment (TME), suggesting how diet-induced changes in lipid composition may regulate tumor progression and therapeutic efficacy. By dissecting various cellular pathways involved in lipid metabolism, we highlight how diet modulates the balance between saturated and unsaturated fatty acid (FA) species in tumors to impact cancer cell and stromal cell function. Finally, we describe how current cancer therapies may synergize with diet to improve therapeutic efficacy.
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Affiliation(s)
- Yu-Jin Jeong
- Department of Metabolism and Nutritional Programming, Van Andel Institute, 333 Bostwick Ave. NE, Grand Rapids, MI 49503, USA
| | - Thomas J Rogers
- Department of Metabolism and Nutritional Programming, Van Andel Institute, 333 Bostwick Ave. NE, Grand Rapids, MI 49503, USA
| | - Carolyn E Anderson
- Department of Metabolism and Nutritional Programming, Van Andel Institute, 333 Bostwick Ave. NE, Grand Rapids, MI 49503, USA; Metabolism and Nutrition (MeNu) Program, Van Andel Institute, 333 Bostwick Ave. NE, Grand Rapids, MI 49503, USA
| | - Evan C Lien
- Department of Metabolism and Nutritional Programming, Van Andel Institute, 333 Bostwick Ave. NE, Grand Rapids, MI 49503, USA.
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27
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Wilkins AA, Schwarz B, Torres-Escobar A, Castore R, Landry L, Latimer B, Bohrnsen E, Bosio CM, Dragoi AM, Ivanov SS. The intracellular growth of the vacuolar pathogen Legionella pneumophila is dependent on the acyl chain composition of host membranes. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.19.567753. [PMID: 38045297 PMCID: PMC10690232 DOI: 10.1101/2023.11.19.567753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Legionella pneumophila is an accidental human bacterial pathogen that infects and replicates within alveolar macrophages causing a severe atypical pneumonia known as Legionnaires' disease. As a prototypical vacuolar pathogen L. pneumophila establishes a unique endoplasmic reticulum (ER)-derived organelle within which bacterial replication takes place. Bacteria-derived proteins are deposited in the host cytosol and in the lumen of the pathogen-occupied vacuole via a type IVb (T4bSS) and a type II (T2SS) secretion system respectively. These secretion system effector proteins manipulate multiple host functions to facilitate intracellular survival of the bacteria. Subversion of host membrane glycerophospholipids (GPLs) by the internalized bacteria via distinct mechanisms feature prominently in trafficking and biogenesis of the Legionella -containing vacuole (LCV). Conventional GPLs composed of a glycerol backbone linked to a polar headgroup and esterified with two fatty acids constitute the bulk of membrane lipids in eukaryotic cells. The acyl chain composition of GPLs dictates phase separation of the lipid bilayer and therefore determines the physiochemical properties of biological membranes - such as membrane disorder, fluidity and permeability. In mammalian cells, fatty acids esterified in membrane GPLs are sourced endogenously from de novo synthesis or via internalization from the exogenous pool of lipids present in serum and other interstitial fluids. Here, we exploited the preferential utilization of exogenous fatty acids for GPL synthesis by macrophages to reprogram the acyl chain composition of host membranes and investigated its impact on LCV homeostasis and L. pneumophila intracellular replication. Using saturated fatty acids as well as cis - and trans - isomers of monounsaturated fatty acids we discovered that under conditions promoting lipid packing and membrane rigidification L. pneumophila intracellular replication was significantly reduced. Palmitoleic acid - a C16:1 monounsaturated fatty acid - that promotes membrane disorder when enriched in GPLs significantly increased bacterial replication within human and murine macrophages but not in axenic growth assays. Lipidome analysis of infected macrophages showed that treatment with exogenous palmitoleic acid resulted in membrane acyl chain reprogramming in a manner that promotes membrane disorder and live-cell imaging revealed that the consequences of increasing membrane disorder impinge on several LCV homeostasis parameters. Collectively, we provide experimental evidence that L. pneumophila replication within its intracellular niche is a function of the lipid bilayer disorder and hydrophobic thickness.
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Terry AR, Nogueira V, Rho H, Ramakrishnan G, Li J, Kang S, Pathmasiri KC, Bhat SA, Jiang L, Kuchay S, Cologna SM, Hay N. CD36 maintains lipid homeostasis via selective uptake of monounsaturated fatty acids during matrix detachment and tumor progression. Cell Metab 2023; 35:2060-2076.e9. [PMID: 37852255 DOI: 10.1016/j.cmet.2023.09.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 04/11/2023] [Accepted: 09/21/2023] [Indexed: 10/20/2023]
Abstract
A high-fat diet (HFD) promotes metastasis through increased uptake of saturated fatty acids (SFAs). The fatty acid transporter CD36 has been implicated in this process, but a detailed understanding of CD36 function is lacking. During matrix detachment, endoplasmic reticulum (ER) stress reduces SCD1 protein, resulting in increased lipid saturation. Subsequently, CD36 is induced in a p38- and AMPK-dependent manner to promote preferential uptake of monounsaturated fatty acids (MUFAs), thereby maintaining a balance between SFAs and MUFAs. In attached cells, CD36 palmitoylation is required for MUFA uptake and protection from palmitate-induced lipotoxicity. In breast cancer mouse models, CD36-deficiency induced ER stress while diminishing the pro-metastatic effect of HFD, and only a palmitoylation-proficient CD36 rescued this effect. Finally, AMPK-deficient tumors have reduced CD36 expression and are metastatically impaired, but ectopic CD36 expression restores their metastatic potential. Our results suggest that, rather than facilitating HFD-driven tumorigenesis, CD36 plays a supportive role by preventing SFA-induced lipotoxicity.
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Affiliation(s)
- Alexander R Terry
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Veronique Nogueira
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Hyunsoo Rho
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Gopalakrishnan Ramakrishnan
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Jing Li
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Soeun Kang
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Koralege C Pathmasiri
- Department of Chemistry, College of Liberal Arts and Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Sameer Ahmed Bhat
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Liping Jiang
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Shafi Kuchay
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Stephanie M Cologna
- Department of Chemistry, College of Liberal Arts and Sciences, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Nissim Hay
- Department of Biochemistry and Molecular Genetics, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA; Research and Development Section, Jesse Brown VA Medical Center, Chicago, IL 60612, USA.
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29
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Phadnis VV, Snider J, Varadharajan V, Ramachandiran I, Deik AA, Lai ZW, Kunchok T, Eaton EN, Sebastiany C, Lyakisheva A, Vaccaro KD, Allen J, Yao Z, Wong V, Geng B, Weiskopf K, Clish CB, Brown JM, Stagljar I, Weinberg RA, Henry WS. MMD collaborates with ACSL4 and MBOAT7 to promote polyunsaturated phosphatidylinositol remodeling and susceptibility to ferroptosis. Cell Rep 2023; 42:113023. [PMID: 37691145 PMCID: PMC10591818 DOI: 10.1016/j.celrep.2023.113023] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 09/12/2023] Open
Abstract
Ferroptosis is a form of regulated cell death with roles in degenerative diseases and cancer. Excessive iron-catalyzed peroxidation of membrane phospholipids, especially those containing the polyunsaturated fatty acid arachidonic acid (AA), is central in driving ferroptosis. Here, we reveal that an understudied Golgi-resident scaffold protein, MMD, promotes susceptibility to ferroptosis in ovarian and renal carcinoma cells in an ACSL4- and MBOAT7-dependent manner. Mechanistically, MMD physically interacts with both ACSL4 and MBOAT7, two enzymes that catalyze sequential steps to incorporate AA in phosphatidylinositol (PI) lipids. Thus, MMD increases the flux of AA into PI, resulting in heightened cellular levels of AA-PI and other AA-containing phospholipid species. This molecular mechanism points to a pro-ferroptotic role for MBOAT7 and AA-PI, with potential therapeutic implications, and reveals that MMD is an important regulator of cellular lipid metabolism.
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Affiliation(s)
- Vaishnavi V Phadnis
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA; Department of Biology, MIT, Cambridge, MA 02139, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Jamie Snider
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Venkateshwari Varadharajan
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA; Center for Microbiome and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Iyappan Ramachandiran
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA; Center for Microbiome and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Amy A Deik
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Zon Weng Lai
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA 02115, USA
| | - Tenzin Kunchok
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Elinor Ng Eaton
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | | | - Anna Lyakisheva
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Kyle D Vaccaro
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Juliet Allen
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Zhong Yao
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Victoria Wong
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Betty Geng
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada
| | - Kipp Weiskopf
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA; Dana-Farber Cancer Institute, Boston, MA 02215, USA
| | - Clary B Clish
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - J Mark Brown
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA; Center for Microbiome and Human Health, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44106, USA
| | - Igor Stagljar
- Donnelly Centre, University of Toronto, Toronto, ON M5S 3E1, Canada; Department of Molecular Genetics, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Department of Biochemistry, Temerty Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada; Mediterranean Institute for Life Sciences, 21000 Split, Croatia
| | - Robert A Weinberg
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA; Department of Biology, MIT, Cambridge, MA 02139, USA.
| | - Whitney S Henry
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA.
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30
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Bhardwaj A, Antonelli M, Ueberheide B, Neel BG. Identification of a Novel Hypoxia-induced Inflammatory Cell Death Pathway. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.05.552118. [PMID: 37808759 PMCID: PMC10557583 DOI: 10.1101/2023.08.05.552118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Hypoxic cancer cells resist many anti-neoplastic therapies and can seed recurrence. We found previously that PTP1B deficiency promotes HER2+ breast cancer cell death in hypoxia by activating RNF213, an ∼600kDa protein containing AAA-ATPase domains and two ubiquitin ligase domains (RING and RZ) that also is implicated in Moyamoya disease (MMD), lipotoxicity, and innate immunity. Here we report that PTP1B and ABL1/2 reciprocally control RNF213 phosphorylation on tyrosine-1275. This phosphorylation promotes RNF213 oligomerization and RZ domain activation. The RZ domain ubiquitylates CYLD/SPATA2, and together with the LUBAC complex, induces their degradation. Decreased CYLD/SPATA2 causes NF-κB activation, which together with hypoxia-induced ER-stress triggers GDSMD-dependent pyroptosis. Mutagenesis experiments show that the RING domain negatively regulates the RZ domain. CYLD -deleted HER2+ cell-derived xenografts phenocopy the effects of PTP1B deficiency, and reconstituting RNF213 knockout lines with RNF213 mutants shows that the RZ domain mediates PTP1B-dependent tumor cell death. Our results identify a novel, potentially targetable PTP1B/RNF213/CYCLD/SPATA pathway critical for controlling inflammatory cell death in hypoxic tumors that could be exploited to target hypoxic tumor cells, potentially turning "cold" tumors "hot". Our findings also reveal new insights into RNF213 regulation, and have potentially important implications for the pathogenesis of MMD, atherosclerosis, and inflammatory and auto-immune disorders.
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31
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Roberts MA, Deol KK, Mathiowetz AJ, Lange M, Leto DE, Stevenson J, Hashemi SH, Morgens DW, Easter E, Heydari K, Nalls MA, Bassik MC, Kampmann M, Kopito RR, Faghri F, Olzmann JA. Parallel CRISPR-Cas9 screens identify mechanisms of PLIN2 and lipid droplet regulation. Dev Cell 2023; 58:1782-1800.e10. [PMID: 37494933 PMCID: PMC10530302 DOI: 10.1016/j.devcel.2023.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Revised: 06/01/2023] [Accepted: 07/03/2023] [Indexed: 07/28/2023]
Abstract
Despite the key roles of perilipin-2 (PLIN2) in governing lipid droplet (LD) metabolism, the mechanisms that regulate PLIN2 levels remain incompletely understood. Here, we leverage a set of genome-edited human PLIN2 reporter cell lines in a series of CRISPR-Cas9 loss-of-function screens, identifying genetic modifiers that influence PLIN2 expression and post-translational stability under different metabolic conditions and in different cell types. These regulators include canonical genes that control lipid metabolism as well as genes involved in ubiquitination, transcription, and mitochondrial function. We further demonstrate a role for the E3 ligase MARCH6 in regulating triacylglycerol biosynthesis, thereby influencing LD abundance and PLIN2 stability. Finally, our CRISPR screens and several published screens provide the foundation for CRISPRlipid (http://crisprlipid.org), an online data commons for lipid-related functional genomics data. Our study identifies mechanisms of PLIN2 and LD regulation and provides an extensive resource for the exploration of LD biology and lipid metabolism.
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Affiliation(s)
- Melissa A Roberts
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kirandeep K Deol
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Alyssa J Mathiowetz
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Mike Lange
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Dara E Leto
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Julian Stevenson
- Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Sayed Hadi Hashemi
- Department of Computer Science, University of Illinois at Urbana-Champaign, Urbana, IL 61820, USA
| | - David W Morgens
- Department of Plant and Microbial Biology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Emilee Easter
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Kartoosh Heydari
- Cancer Research Laboratory FACS Core Facility, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Mike A Nalls
- Data Tecnica International, LLC, Washington, DC, USA; Center for Alzheimer's and Related Dementias, National Institutes of Health, Bethesda, MD 20892, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD 20892, USA
| | - Michael C Bassik
- Department of Genetics, Stanford University, Stanford, CA 94305, USA
| | - Martin Kampmann
- Institute for Neurodegenerative Diseases, Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94158, USA
| | - Ron R Kopito
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | - Faraz Faghri
- Data Tecnica International, LLC, Washington, DC, USA; Center for Alzheimer's and Related Dementias, National Institutes of Health, Bethesda, MD 20892, USA; Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD 20892, USA
| | - James A Olzmann
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Department of Nutritional Sciences and Toxicology, University of California, Berkeley, Berkeley, CA 94720, USA; Chan Zuckerberg Biohub, San Francisco, CA 94158, USA.
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Shan L, Li X, Zheng X, Wu J, Ren H, Liu W, Wang P. Two Polarity-Sensitive Fluorescent Probes Based on Curcumin Analogs for Visualizing Polarity Changes in Lipid Droplets. Molecules 2023; 28:6626. [PMID: 37764402 PMCID: PMC10535065 DOI: 10.3390/molecules28186626] [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: 08/28/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
As a class of highly dynamic organelles, lipid droplets (LDs) are involved in numerous physiological functions, and the changes in polarity of LDs are closely related to a variety of diseases. In this work, we developed two polarity-sensitive fluorescent probes (CC-CH and CC-Cl) based on curcumin analogs. CC-CH and CC-Cl with a donor-acceptor-donor (D-A-D) structure exhibited the property of intramolecular charge transfer (ICT); thus, their fluorescence emissions were significantly attenuated with increasing ambient polarity. Cell experiments indicated that CC-CH and CC-Cl showed excellent photostability, a low cytotoxicity, and a superior targeting ability regarding LDs. After treatment with oleic acid (OA) and methyl-β-cyclodextrin (M-β-CD), the polarity changes of LDs in living cells could be visualized by using CC-CH and CC-Cl. In addition, CC-CH and CC-Cl could monitor polarity changes of LDs in different pathological processes, including inflammatory responses, nutrient deprivation, and H2O2-induced oxidative stress. Therefore, CC-CH and CC-Cl are promising potential fluorescent probes for tracking intracellular LD polarity changes.
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Affiliation(s)
- Lin Shan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xuewei Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiuli Zheng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jiasheng Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China
| | - Haohui Ren
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- Institute of Optical Physics and Engineering Technology, Qilu Zhongke, Jinan 250000, China
| | - Weimin Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Pengfei Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials and CityU-CAS Joint Laboratory of Functional Materials and Devices, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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Romanauska A, Köhler A. Lipid saturation controls nuclear envelope function. Nat Cell Biol 2023; 25:1290-1302. [PMID: 37591950 PMCID: PMC10495262 DOI: 10.1038/s41556-023-01207-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 07/18/2023] [Indexed: 08/19/2023]
Abstract
The nuclear envelope (NE) is a spherical double membrane with elastic properties. How NE shape and elasticity are regulated by lipid chemistry is unknown. Here we discover lipid acyl chain unsaturation as essential for NE and nuclear pore complex (NPC) architecture and function. Increased lipid saturation rigidifies the NE and the endoplasmic reticulum into planar, polygonal membranes, which are fracture prone. These membranes exhibit a micron-scale segregation of lipids into ordered and disordered phases, excluding NPCs from the ordered phase. Balanced lipid saturation is required for NPC integrity, pore membrane curvature and nucleocytoplasmic transport. Oxygen deprivation amplifies the impact of saturated lipids, causing NE rigidification and rupture. Conversely, lipid droplets buffer saturated lipids to preserve NE architecture. Our study uncovers a fundamental link between lipid acyl chain structure and the integrity of the cell nucleus with implications for nuclear membrane malfunction in ischaemic tissues.
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Affiliation(s)
- Anete Romanauska
- Max Perutz Labs, Vienna Biocenter Campus (VBC), Vienna, Austria
- Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Alwin Köhler
- Max Perutz Labs, Vienna Biocenter Campus (VBC), Vienna, Austria.
- Center for Molecular Biology, University of Vienna, Vienna, Austria.
- Center for Medical Biochemistry, Medical University of Vienna, Vienna, Austria.
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Mukherjee A, Bezwada D, Greco F, Zandbergen M, Shen T, Chiang CY, Tasdemir M, Fahrmann J, Grapov D, La Frano MR, Vu HS, Faubert B, Newman JW, McDonnell LA, Nezi L, Fiehn O, DeBerardinis RJ, Lengyel E. Adipocytes reprogram cancer cell metabolism by diverting glucose towards glycerol-3-phosphate thereby promoting metastasis. Nat Metab 2023; 5:1563-1577. [PMID: 37653041 DOI: 10.1038/s42255-023-00879-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 07/27/2023] [Indexed: 09/02/2023]
Abstract
In the tumor microenvironment, adipocytes function as an alternate fuel source for cancer cells. However, whether adipocytes influence macromolecular biosynthesis in cancer cells is unknown. Here we systematically characterized the bidirectional interaction between primary human adipocytes and ovarian cancer (OvCa) cells using multi-platform metabolomics, imaging mass spectrometry, isotope tracing and gene expression analysis. We report that, in OvCa cells co-cultured with adipocytes and in metastatic tumors, a part of the glucose from glycolysis is utilized for the biosynthesis of glycerol-3-phosphate (G3P). Normoxic HIF1α protein regulates the altered flow of glucose-derived carbons in cancer cells, resulting in increased glycerophospholipids and triacylglycerol synthesis. The knockdown of HIF1α or G3P acyltransferase 3 (a regulatory enzyme of glycerophospholipid synthesis) reduced metastasis in xenograft models of OvCa. In summary, we show that, in an adipose-rich tumor microenvironment, cancer cells generate G3P as a precursor for critical membrane and signaling components, thereby promoting metastasis. Targeting biosynthetic processes specific to adipose-rich tumor microenvironments might be an effective strategy against metastasis.
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Affiliation(s)
- Abir Mukherjee
- Department of Obstetrics and Gynecology/Section of Gynecologic Oncology-Center for Integrative Sciences, University of Chicago, Chicago, IL, USA
| | - Divya Bezwada
- Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Francesco Greco
- Fondazione Pisana per la Scienza ONLUS, San Giuliano Terme, Italy
- Institute of Life Sciences, Sant'Anna School of Advanced Studies, Pisa, Italy
| | - Malu Zandbergen
- Department of Obstetrics and Gynecology/Section of Gynecologic Oncology-Center for Integrative Sciences, University of Chicago, Chicago, IL, USA
| | - Tong Shen
- NIH West Coast Metabolomics Center, University of California, Davis, CA, USA
| | - Chun-Yi Chiang
- Department of Obstetrics and Gynecology/Section of Gynecologic Oncology-Center for Integrative Sciences, University of Chicago, Chicago, IL, USA
| | - Medine Tasdemir
- Department of Obstetrics and Gynecology/Section of Gynecologic Oncology-Center for Integrative Sciences, University of Chicago, Chicago, IL, USA
| | - Johannes Fahrmann
- Department of Clinical Cancer Prevention, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dmitry Grapov
- NIH West Coast Metabolomics Center, University of California, Davis, CA, USA
| | - Michael R La Frano
- NIH West Coast Metabolomics Center, University of California, Davis, CA, USA
| | - Hieu S Vu
- Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Brandon Faubert
- Department of Medicine/Section of Hematology and Oncology, University of Chicago, Chicago, IL, USA
| | - John W Newman
- NIH West Coast Metabolomics Center, University of California, Davis, CA, USA
| | - Liam A McDonnell
- Institute of Life Sciences, Sant'Anna School of Advanced Studies, Pisa, Italy
| | - Luigi Nezi
- Department of Experimental Oncology, IRCCS European Institute of Oncology, Milano, Italy
| | - Oliver Fiehn
- NIH West Coast Metabolomics Center, University of California, Davis, CA, USA
| | - Ralph J DeBerardinis
- Children's Medical Center Research Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
- 9Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Ernst Lengyel
- Department of Obstetrics and Gynecology/Section of Gynecologic Oncology-Center for Integrative Sciences, University of Chicago, Chicago, IL, USA.
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Zhang Y, Yuan Y, Jiang L, Liu Y, Zhang L. The emerging role of E3 ubiquitin ligase RNF213 as an antimicrobial host determinant. Front Cell Infect Microbiol 2023; 13:1205355. [PMID: 37655297 PMCID: PMC10465799 DOI: 10.3389/fcimb.2023.1205355] [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: 04/13/2023] [Accepted: 07/24/2023] [Indexed: 09/02/2023] Open
Abstract
Ring finger protein 213 (RNF213) is a large E3 ubiquitin ligase with a molecular weight of 591 kDa that is associated with moyamoya disease, a rare cerebrovascular disease. It is located in the cytosol and perinuclear space. Missense mutations in this gene have been found to be more prevalent in patients with moyamoya disease compared with that in healthy individuals. Understanding the molecular function of RNF213 could provide insights into moyamoya disease. RNF213 contains a C3HC4-type RING finger domain with an E3 ubiquitin ligase domain and six AAA+ adenosine triphosphatase (ATPase) domains. It is the only known protein with both AAA+ ATPase and ubiquitin ligase activities. Recent studies have highlighted the role of RNF213 in fighting against microbial infections, including viruses, parasites, bacteria, and chlamydiae. This review aims to summarize the recent research progress on the mechanisms of RNF213 in pathogenic infections, which will aid researchers in understanding the antimicrobial role of RNF213.
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Affiliation(s)
- Yulu Zhang
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
- Department of Pathogen Biology, School of Clinical and Basic Medical Sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yupei Yuan
- Department of Pathogen Biology, School of Clinical and Basic Medical Sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Lu Jiang
- Department of Pathogen Biology, School of Clinical and Basic Medical Sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Yihan Liu
- Department of Pathogen Biology, School of Clinical and Basic Medical Sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
| | - Leiliang Zhang
- Department of Clinical Laboratory Medicine, The First Affiliated Hospital of Shandong First Medical University and Shandong Provincial Qianfoshan Hospital, Jinan, Shandong, China
- Department of Pathogen Biology, School of Clinical and Basic Medical Sciences, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Medical Science and Technology Innovation Center, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
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36
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Potenza A, Gorla G, Carrozzini T, Bersano A, Gatti L, Pollaci G. Lipidomic Approaches in Common and Rare Cerebrovascular Diseases: The Discovery of Unconventional Lipids as Novel Biomarkers. Int J Mol Sci 2023; 24:12744. [PMID: 37628924 PMCID: PMC10454673 DOI: 10.3390/ijms241612744] [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: 07/04/2023] [Revised: 08/09/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Stroke remains a major cause of death and disability worldwide. Identifying new circulating biomarkers able to distinguish and monitor common and rare cerebrovascular diseases that lead to stroke is of great importance. Biomarkers provide complementary information that may improve diagnosis, prognosis and prediction of progression as well. Furthermore, biomarkers can contribute to filling the gap in knowledge concerning the underlying disease mechanisms by pointing out novel potential therapeutic targets for personalized medicine. If many "conventional" lipid biomarkers are already known to exert a relevant role in cerebrovascular diseases, the aim of our study is to review novel "unconventional" lipid biomarkers that have been recently identified in common and rare cerebrovascular disorders using novel, cutting-edge lipidomic approaches.
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Affiliation(s)
- Antonella Potenza
- Laboratory of Neurobiology and UCV, Neurology IX Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy; (A.P.); (G.G.); (T.C.); (G.P.)
| | - Gemma Gorla
- Laboratory of Neurobiology and UCV, Neurology IX Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy; (A.P.); (G.G.); (T.C.); (G.P.)
| | - Tatiana Carrozzini
- Laboratory of Neurobiology and UCV, Neurology IX Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy; (A.P.); (G.G.); (T.C.); (G.P.)
| | - Anna Bersano
- Cerebrovascular Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy;
| | - Laura Gatti
- Laboratory of Neurobiology and UCV, Neurology IX Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy; (A.P.); (G.G.); (T.C.); (G.P.)
| | - Giuliana Pollaci
- Laboratory of Neurobiology and UCV, Neurology IX Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy; (A.P.); (G.G.); (T.C.); (G.P.)
- Department of Pharmacological and Biomolecular Sciences, Università di Milano, 20122 Milan, Italy
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37
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Sivasami P, Elkins C, Diaz-Saldana PP, Goss K, Peng A, Hamersky M, Bae J, Xu M, Pollack BP, Horwitz EM, Scharer CD, Seldin L, Li C. Obesity-induced dysregulation of skin-resident PPARγ + Treg cells promotes IL-17A-mediated psoriatic inflammation. Immunity 2023; 56:1844-1861.e6. [PMID: 37478855 PMCID: PMC10527179 DOI: 10.1016/j.immuni.2023.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/16/2023] [Accepted: 06/22/2023] [Indexed: 07/23/2023]
Abstract
Obesity is a major risk factor for psoriasis, but how obesity disrupts the regulatory mechanisms that keep skin inflammation in check is unclear. Here, we found that skin was enriched with a unique population of CD4+Foxp3+ regulatory T (Treg) cells expressing the nuclear receptor peroxisome proliferation-activated receptor gamma (PPARγ). PPARγ drove a distinctive transcriptional program and functional suppression of IL-17A+ γδ T cell-mediated psoriatic inflammation. Diet-induced obesity, however, resulted in a reduction of PPARγ+ skin Treg cells and a corresponding loss of control over IL-17A+ γδ T cell-mediated inflammation. Mechanistically, PPARγ+ skin Treg cells preferentially took up elevated levels of long-chain free fatty acids in obese mice, which led to cellular lipotoxicity, oxidative stress, and mitochondrial dysfunction. Harnessing the anti-inflammatory properties of these PPARγ+ skin Treg cells could have therapeutic potential for obesity-associated inflammatory skin diseases.
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Affiliation(s)
- Pulavendran Sivasami
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Cody Elkins
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Pamela P Diaz-Saldana
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Kyndal Goss
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA 30322, USA; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Amy Peng
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Michael Hamersky
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Jennifer Bae
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Miaoer Xu
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Brian P Pollack
- Atlanta Veterans Affairs Medical Center, Decatur, GA 30033, USA; Department of Dermatology, Emory University School of Medicine, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Edwin M Horwitz
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Atlanta, GA 30322, USA; Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Christopher D Scharer
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Lindsey Seldin
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA; Atlanta Veterans Affairs Medical Center, Decatur, GA 30033, USA; Department of Dermatology, Emory University School of Medicine, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Chaoran Li
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA; Department of Dermatology, Emory University School of Medicine, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University School of Medicine, Atlanta, GA 30322, USA.
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38
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Fu C, Xiang ML, Chen S, Dong G, Liu Z, Chen CB, Liang J, Cao Y, Zhang M, Liu Q. Molecular Drug Simulation and Experimental Validation of the CD36 Receptor Competitively Binding to Long-Chain Fatty Acids by 7-Ketocholesteryl-9-carboxynonanoate. ACS OMEGA 2023; 8:28277-28289. [PMID: 37576668 PMCID: PMC10413453 DOI: 10.1021/acsomega.3c02082] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/18/2023] [Indexed: 08/15/2023]
Abstract
Long-chain fatty acids (LCFAs) are one of the main energy-supplying substances in the body. LCFAs with different lengths and saturations may have contrasting biological effects that exacerbate or alleviate progress against a variety of systemic disorders of lipid metabolism in organisms. Nonalcoholic fatty liver disease is characterized by chronic inflammation and steatosis, mainly caused by the ectopic accumulation of lipids in the liver, especially LCFAs. CD36 is a scavenger receptor that recognizes and mediates the transmembrane absorption of LCFAs and is expressed in a variety of cells throughout the body. In previous studies, our group found that 7-ketocholesteryl-9-carboxynonanoate (oxLig-1) has the biological effect of targeting CD36 to inhibit oxidized low-density lipoprotein lipotoxicity-induced lipid metabolism disorder; it has an ω-carboxyl physiologically active center and is structurally similar to LCFAs. However, the biological mechanism of oxLig-1 binding to CD36 and competing for binding to different types of LCFAs is still not clear. In this study, molecular docking and molecular dynamics simulation were utilized to simulate and analyze the binding activity between oxLig-1 and different types of LCFAs to CD36 and confirmed by the enzyme-linked immunosorbent assay (ELISA) method. Absorption, distribution, metabolism, excretion, and toxicity (ADMET) platform was applied to predict the drug-forming properties of oxLig-1, and HepG2 cells model of oleic acid and nonalcoholic fatty liver disease (NAFLD) model mice were validated to verify the biological protection of oxLig-1 on lipid lowering. The results showed that there was a co-binding site of LCFAs and oxLig-1 on CD36, and the binding driving forces were mainly hydrogen bonding and hydrophobic interactions. The binding abilities of polyunsaturated LCFAs, oxLig-1, monounsaturated LCFAs, and saturated LCFAs to CD36 showed a decreasing trend in this order. There was a similar decreasing trend in the stability of the molecular dynamics simulation. ELISA results similarly confirmed that the binding activity of oxLig-1 to CD36 was significantly higher than that of typical monounsaturated and saturated LCFAs. ADMET prediction results indicated that oxLig-1 had a good drug-forming property. HepG2 cells model of oleic acid and NAFLD model mice study results demonstrated the favorable lipid-lowering biological effects of oxLig-1. Therefore, oxLig-1 may have a protective effect by targeting CD36 to inhibit the excessive influx and deposition of lipotoxicity monounsaturated LCFAs and saturated LCFAs in hepatocytes.
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Affiliation(s)
- Changzhen Fu
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Meng-Lin Xiang
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
- Shantou
University Medical College, Shantou, Guangdong Province 515031, China
| | - Shaolang Chen
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Geng Dong
- Shantou
University Medical College, Shantou, Guangdong Province 515031, China
| | - Zibo Liu
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Chong-Bo Chen
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Jiajian Liang
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Yingjie Cao
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Mingzhi Zhang
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
| | - Qingping Liu
- Joint
Shantou International Eye Center of Shantou University and The Chinese
University of Hong Kong, Shantou, Guangdong Province 515041, China
- Key
Laboratory of Carbohydrate and Lipid Metabolism Research of Liaoning
Province, Dalian, Liaoning Province 116024, China
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Zhao WS, Chen KF, Liu M, Jia XL, Huang YQ, Hao BB, Hu H, Shen XY, Yu Q, Tan MJ. Investigation of targets and anticancer mechanisms of covalently acting natural products by functional proteomics. Acta Pharmacol Sin 2023; 44:1701-1711. [PMID: 36932232 PMCID: PMC10374574 DOI: 10.1038/s41401-023-01072-z] [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: 10/31/2022] [Accepted: 02/23/2023] [Indexed: 03/19/2023] Open
Abstract
Eriocalyxin B (EB), 17-hydroxy-jolkinolide B (HJB), parthenolide (PN), xanthatin (XT) and andrographolide (AG) are terpenoid natural products with a variety of promising antitumor activities, which commonly bear electrophilic groups (α,β-unsaturated carbonyl groups and/or epoxides) capable of covalently modifying protein cysteine residues. However, their direct targets and underlying molecular mechanisms are still largely unclear, which limits the development of these compounds. In this study, we integrated activity-based protein profiling (ABPP) and quantitative proteomics approach to systematically characterize the covalent targets of these natural products and their involved cellular pathways. We first demonstrated the anti-proliferation activities of these five compounds in triple-negative breast cancer cell MDA-MB-231. Tandem mass tag (TMT)-based quantitative proteomics showed all five compounds commonly affected the ubiquitin mediated proteolysis pathways. ABPP platform identified the preferentially modified targets of EB and PN, two natural products with high anti-proliferation activity. Biochemical experiments showed that PN inhibited the cell proliferation through targeting ubiquitin carboxyl-terminal hydrolase 10 (USP10). Together, this study uncovered the covalently modified targets of these natural products and potential molecular mechanisms of their antitumor activities.
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Affiliation(s)
- Wen-Si Zhao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 101408, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China
| | - Kai-Feng Chen
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 101408, China
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China
| | - Man Liu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xing-Long Jia
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Yu-Qi Huang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
- University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Bing-Bing Hao
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Hao Hu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Xiao-Yan Shen
- Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai, 201203, China
| | - Qiang Yu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China
| | - Min-Jia Tan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, 201203, China.
- University of Chinese Academy of Sciences, Beijing, 101408, China.
- Zhongshan Institute for Drug Discovery, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhongshan, 528400, China.
- Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, College of Pharmacy, Jiangsu Ocean University, Lianyungang, 222005, China.
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Tong B, Zhang Z, Li X, Liu J, Wang H, Song L, Feng J, Dai Z, Xu Y. FUNDC1 modulates mitochondrial defects and pancreatic β-cell dysfunction under lipotoxicity. Biochem Biophys Res Commun 2023; 672:54-64. [PMID: 37336125 DOI: 10.1016/j.bbrc.2023.06.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/02/2023] [Accepted: 06/13/2023] [Indexed: 06/21/2023]
Abstract
Insulin resistance and many metabolic disorders are causally linked to mitochondrial dysfunction or defective mitochondrial quality control. Mitophagy is a highly selective mechanism that recognizes and removes damaged mitochondria to maintain mitochondrial homeostasis. Here, we addressed the potential role of FUNDC1, a mediator of mitophagy, in pancreatic β-cell dysfunction under lipotoxicity. In pancreatic MIN6 cells, FUNDC1 deficiency aggravated palmitate-induced mitochondrial dysfunction, which led to cell death and insulin insensitivity. Interestingly, FUNDC1 overexpression prevented these cellular harms brought on by palmitate. In mice models, pancreatic-specific FUNDC1 overexpression alleviated high-fat diet (HFD)-induced insulin resistance and obesity. Mechanistically, pancreatic-specific overexpression of FUNDC1 ameliorated mitochondrial defects and endoplasmic reticulum (ER) stress upon HFD. Our research indicates that FUNDC1 plays an essential role in apoptosis and dysfunction of pancreatic β-cells via modulating lipotoxicity-induced mitochondrial defects.
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Affiliation(s)
- Beier Tong
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Zhengwei Zhang
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Xuefeng Li
- Department of Endocrinology, Taihe Hospital, Hubei University of Medicine, Shiyan, 442000, China
| | - Jie Liu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Huawei Wang
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Linyang Song
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Jieyuan Feng
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China
| | - Zhe Dai
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
| | - Yancheng Xu
- Department of Endocrinology, Zhongnan Hospital of Wuhan University, Wuhan, 430071, China.
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41
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Zadoorian A, Du X, Yang H. Lipid droplet biogenesis and functions in health and disease. Nat Rev Endocrinol 2023:10.1038/s41574-023-00845-0. [PMID: 37221402 DOI: 10.1038/s41574-023-00845-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/25/2023] [Indexed: 05/25/2023]
Abstract
Ubiquitous yet unique, lipid droplets are intracellular organelles that are increasingly being recognized for their versatility beyond energy storage. Advances uncovering the intricacies of their biogenesis and the diversity of their physiological and pathological roles have yielded new insights into lipid droplet biology. Despite these insights, the mechanisms governing the biogenesis and functions of lipid droplets remain incompletely understood. Moreover, the causal relationship between the biogenesis and function of lipid droplets and human diseases is poorly resolved. Here, we provide an update on the current understanding of the biogenesis and functions of lipid droplets in health and disease, highlighting a key role for lipid droplet biogenesis in alleviating cellular stresses. We also discuss therapeutic strategies of targeting lipid droplet biogenesis, growth or degradation that could be applied in the future to common diseases, such as cancer, hepatic steatosis and viral infection.
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Affiliation(s)
- Armella Zadoorian
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Ximing Du
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Hongyuan Yang
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia.
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42
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Dorschel KB, Wanebo JE. Physiological and pathophysiological mechanisms of the molecular and cellular biology of angiogenesis and inflammation in moyamoya angiopathy and related vascular diseases. Front Neurol 2023; 14:661611. [PMID: 37273690 PMCID: PMC10236939 DOI: 10.3389/fneur.2023.661611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 01/16/2023] [Indexed: 06/06/2023] Open
Abstract
Rationale The etiology and pathophysiological mechanisms of moyamoya angiopathy (MMA) remain largely unknown. MMA is a progressive, occlusive cerebrovascular disorder characterized by recurrent ischemic and hemorrhagic strokes; with compensatory formation of an abnormal network of perforating blood vessels that creates a collateral circulation; and by aberrant angiogenesis at the base of the brain. Imbalance of angiogenic and vasculogenic mechanisms has been proposed as a potential cause of MMA. Moyamoya vessels suggest that aberrant angiogenic, arteriogenic, and vasculogenic processes may be involved in the pathophysiology of MMA. Circulating endothelial progenitor cells have been hypothesized to contribute to vascular remodeling in MMA. MMA is associated with increased expression of angiogenic factors and proinflammatory molecules. Systemic inflammation may be related to MMA pathogenesis. Objective This literature review describes the molecular mechanisms associated with cerebrovascular dysfunction, aberrant angiogenesis, and inflammation in MMA and related cerebrovascular diseases along with treatment strategies and future research perspectives. Methods and results References were identified through a systematic computerized search of the medical literature from January 1, 1983, through July 29, 2022, using the PubMed, EMBASE, BIOSIS Previews, CNKI, ISI web of science, and Medline databases and various combinations of the keywords "moyamoya," "angiogenesis," "anastomotic network," "molecular mechanism," "physiology," "pathophysiology," "pathogenesis," "biomarker," "genetics," "signaling pathway," "blood-brain barrier," "endothelial progenitor cells," "endothelial function," "inflammation," "intracranial hemorrhage," and "stroke." Relevant articles and supplemental basic science articles almost exclusively published in English were included. Review of the reference lists of relevant publications for additional sources resulted in 350 publications which met the study inclusion criteria. Detection of growth factors, chemokines, and cytokines in MMA patients suggests the hypothesis of aberrant angiogenesis being involved in MMA pathogenesis. It remains to be ascertained whether these findings are consequences of MMA or are etiological factors of MMA. Conclusions MMA is a heterogeneous disorder, comprising various genotypes and phenotypes, with a complex pathophysiology. Additional research may advance our understanding of the pathophysiology involved in aberrant angiogenesis, arterial stenosis, and the formation of moyamoya collaterals and anastomotic networks. Future research will benefit from researching molecular pathophysiologic mechanisms and the correlation of clinical and basic research results.
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Affiliation(s)
- Kirsten B. Dorschel
- Medical Faculty, Heidelberg University Medical School, Ruprecht-Karls-Universität Heidelberg, Heidelberg, Germany
| | - John E. Wanebo
- Department of Neurosurgery, Barrow Neurological Institute, St. Joseph's Hospital and Medical Center, Phoenix, AZ, United States
- Department of Neuroscience, HonorHealth Research Institute, Scottsdale, AZ, United States
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43
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Farese RV, Walther TC. Glycerolipid Synthesis and Lipid Droplet Formation in the Endoplasmic Reticulum. Cold Spring Harb Perspect Biol 2023; 15:a041246. [PMID: 36096640 PMCID: PMC10153804 DOI: 10.1101/cshperspect.a041246] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
More than 60 years ago, Eugene Kennedy and coworkers elucidated the endoplasmic reticulum (ER)-based pathways of glycerolipid synthesis, including the synthesis of phospholipids and triacylglycerols (TGs). The reactions of the Kennedy pathway were identified by studying the conversion of lipid intermediates and the isolation of biochemical enzymatic activities, but the molecular basis for most of these reactions was unknown. With recent progress in the cell biology, biochemistry, and structural biology in this area, we have a much more mechanistic understanding of this pathway and its reactions. In this review, we provide an overview of molecular aspects of glycerolipid synthesis, focusing on recent insights into the synthesis of TGs. Further, we go beyond the Kennedy pathway to describe the mechanisms for storage of TG in cytosolic lipid droplets and discuss how overwhelming these pathways leads to ER stress and cellular toxicity, as seen in diseases linked to lipid overload and obesity.
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Affiliation(s)
- Robert V Farese
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
- Center for Causes and Prevention of Cardiovascular Disease (CAP-CVD), Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
| | - Tobias C Walther
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
- Department of Cell Biology, Harvard Medical School, Boston, Massachusetts 02115, USA
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts 02142, USA
- Center for Causes and Prevention of Cardiovascular Disease (CAP-CVD), Harvard T. H. Chan School of Public Health, Boston, Massachusetts 02115, USA
- Howard Hughes Medical Institute Boston, Boston, Massachusetts 02115, USA
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44
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Wieder N, Fried JC, Kim C, Sidhom EH, Brown MR, Marshall JL, Arevalo C, Dvela-Levitt M, Kost-Alimova M, Sieber J, Gabriel KR, Pacheco J, Clish C, Abbasi HS, Singh S, Rutter JC, Therrien M, Yoon H, Lai ZW, Baublis A, Subramanian R, Devkota R, Small J, Sreekanth V, Han M, Lim D, Carpenter AE, Flannick J, Finucane H, Haigis MC, Claussnitzer M, Sheu E, Stevens B, Wagner BK, Choudhary A, Shaw JL, Pablo JL, Greka A. FALCON systematically interrogates free fatty acid biology and identifies a novel mediator of lipotoxicity. Cell Metab 2023; 35:887-905.e11. [PMID: 37075753 PMCID: PMC10257950 DOI: 10.1016/j.cmet.2023.03.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 02/21/2023] [Accepted: 03/27/2023] [Indexed: 04/21/2023]
Abstract
Cellular exposure to free fatty acids (FFAs) is implicated in the pathogenesis of obesity-associated diseases. However, there are no scalable approaches to comprehensively assess the diverse FFAs circulating in human plasma. Furthermore, assessing how FFA-mediated processes interact with genetic risk for disease remains elusive. Here, we report the design and implementation of fatty acid library for comprehensive ontologies (FALCON), an unbiased, scalable, and multimodal interrogation of 61 structurally diverse FFAs. We identified a subset of lipotoxic monounsaturated fatty acids associated with decreased membrane fluidity. Furthermore, we prioritized genes that reflect the combined effects of harmful FFA exposure and genetic risk for type 2 diabetes (T2D). We found that c-MAF-inducing protein (CMIP) protects cells from FFA exposure by modulating Akt signaling. In sum, FALCON empowers the study of fundamental FFA biology and offers an integrative approach to identify much needed targets for diverse diseases associated with disordered FFA metabolism.
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Affiliation(s)
- Nicolas Wieder
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA; Department of Neurology with Experimental Neurology and Berlin Institute of Health, Charité, 10117 Berlin, Germany
| | - Juliana Coraor Fried
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Choah Kim
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Eriene-Heidi Sidhom
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA
| | - Matthew R Brown
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | | | - Carlos Arevalo
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Moran Dvela-Levitt
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA; The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | | | - Jonas Sieber
- Department of Endocrinology, Metabolism and Cardiovascular Systems, University of Fribourg, Fribourg, Switzerland
| | | | - Julian Pacheco
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Clary Clish
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | | | - Shantanu Singh
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Justine C Rutter
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA
| | | | - Haejin Yoon
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Ludwig Center for Cancer Research at Harvard, Boston, MA 02115, USA
| | - Zon Weng Lai
- Harvard Chan Advanced Multiomics Platform, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Aaron Baublis
- Harvard Chan Advanced Multiomics Platform, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA
| | - Renuka Subramanian
- Laboratory for Surgical and Metabolic Research, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Ranjan Devkota
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Jonnell Small
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA; Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Vedagopuram Sreekanth
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Myeonghoon Han
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Donghyun Lim
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | | | - Jason Flannick
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA; Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA
| | - Hilary Finucane
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Analytic and Translational Genetics Unit, Mass General Hospital, Boston, MA 02114, USA
| | - Marcia C Haigis
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA 02115, USA; Ludwig Center for Cancer Research at Harvard, Boston, MA 02115, USA
| | - Melina Claussnitzer
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA; Metabolism Program, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Eric Sheu
- Laboratory for Surgical and Metabolic Research, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Beth Stevens
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA; Boston Children's Hospital, F.M. Kirby Neurobiology Center, Boston, MA 02115, USA; Howard Hughes Medical Institute, Boston, MA 02115, USA
| | - Bridget K Wagner
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Amit Choudhary
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Harvard Medical School, Boston, MA 02115, USA; Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Divisions of Renal Medicine and Engineering, Brigham and Women's Hospital, Boston, MA 02115, USA
| | - Jillian L Shaw
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | | | - Anna Greka
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Medicine, Brigham and Women's Hospital, Boston, MA 02115, USA; Harvard Medical School, Boston, MA 02115, USA.
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45
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LaMastro V, Campbell KM, Gonzalez P, Meng-Saccoccio T, Shukla A. Antifungal liposomes: Lipid saturation and cholesterol concentration impact interaction with fungal and mammalian cells. J Biomed Mater Res A 2023; 111:644-659. [PMID: 36740998 DOI: 10.1002/jbm.a.37501] [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: 10/20/2022] [Revised: 12/24/2022] [Accepted: 12/29/2022] [Indexed: 02/07/2023]
Abstract
Liposomes are lipid-based nanoparticles that have been used to deliver encapsulated drugs for a variety of applications, including treatment of life-threatening fungal infections. By understanding the effect of composition on liposome interactions with both fungal and mammalian cells, new effective antifungal liposomes can be developed. In this study, we investigated the impact of lipid saturation and cholesterol content on fungal and mammalian cell interactions with liposomes. We used three phospholipids with different saturation levels (saturated hydrogenated soy phosphatidylcholine (HSPC), mono-unsaturated 1-palmitoyl-2-oleoyl-glycero-3-phosphocholine (POPC), and di-unsaturated 1-palmitoyl-2-linoleoyl-sn-glycero-3-phosphocholine (PLPC)) and cholesterol concentrations ranging from 15% to 40% (w/w) in our liposome formulations. Using flow cytometry, >80% of Candida albicans SC5314 cells were found to interact with all liposome formulations developed, while >50% of clinical isolates tested exhibited interaction with these liposomes. In contrast, POPC-containing formulations exhibited low levels of interaction with murine fibroblasts and human umbilical vein endothelial cells (<30%), while HSPC and PLPC formulations had >50% and >80% interaction, respectively. Further, PLPC formulations caused a significant decrease in mammalian cell viability. Formulations that resulted in low levels of mammalian cell interaction, minimal cytotoxicity, and high levels of fungal cell interaction were then used to encapsulate the antifungal drug, amphotericin B. These liposomes eradicated planktonic C. albicans at drug concentrations lower than free drug, potentially due to the high levels of liposome-C. albicans interaction. Overall, this study provides new insights into the design of liposome formulations towards the development of new antifungal therapeutics.
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Affiliation(s)
- Veronica LaMastro
- School of Engineering, Center for Biomedical Engineering, Brown University, Providence, Rhode Island, USA
| | - Kayla M Campbell
- School of Engineering, Center for Biomedical Engineering, Brown University, Providence, Rhode Island, USA
| | - Peter Gonzalez
- Department of Chemistry, Brown University, Providence, Rhode Island, USA
| | - Tobias Meng-Saccoccio
- School of Engineering, Center for Biomedical Engineering, Brown University, Providence, Rhode Island, USA
| | - Anita Shukla
- School of Engineering, Center for Biomedical Engineering, Brown University, Providence, Rhode Island, USA
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46
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Wu Q, Shi D, Dong T, Zhang Z, Ou Q, Fang Y, Zhang C. Serum Saturated Fatty Acids including Very Long-Chain Saturated Fatty Acids and Colorectal Cancer Risk among Chinese Population. Nutrients 2023; 15:nu15081917. [PMID: 37111137 PMCID: PMC10141165 DOI: 10.3390/nu15081917] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/13/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
The association between circulating saturated fatty acids (SFAs) including very long-chain SFAs (VLCSFAs) and colorectal cancer (CRC) risk has not been clearly established. To investigate the association between serum SFAs and CRC risk in Chinese population, 680 CRC cases and 680 sex and age-matched (5-year interval) controls were recruited in our study. Serum levels of SFAs were detected by gas chromatography. Unconditional logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (CIs) for the association between serum SFAs and CRC risk. Results showed that total SFAs were positively associated with the risk of CRC (adjusted OR quartile 4 vs. 1 = 2.64, 95%CI: 1.47-4.74). However, VLCSFAs were inversely associated with CRC risk (adjusted OR quartile 4 vs. 1 = 0.51, 95%CI: 0.36-0.72). Specifically, lauric acid, myristic acid, palmitic acid, heptadecanoic acid, and arachidic acid were positively associated with CRC risk, while behenic acid and lignoceric acid were inversely associated with CRC risk. This study indicates that higher levels of total serum SFAs and lower levels of serum VLCSFAs were associated with an increased risk of CRC in Chinese population. To reduce the risk of CRC, we recommend reducing the intake of foods containing palmitic acid and heptadecanoic acid such as animal products and dairy products, and moderately increasing the intake of foods containing VLCSFAs such as peanuts and canola oil.
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Affiliation(s)
- Qixin Wu
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Dandan Shi
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Ting Dong
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Zhuolin Zhang
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - Qingjian Ou
- Department of Experimental Research, Sun Yat-sen University Cancer Centre, State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangzhou 510060, China
| | - Yujing Fang
- Department of Experimental Research, Sun Yat-sen University Cancer Centre, State Key Laboratory of Oncology in South China, Collaborative Innovation Centre for Cancer Medicine, Guangzhou 510060, China
| | - Caixia Zhang
- Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
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47
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The role of CaMKK2 in Golgi-associated vesicle trafficking. Biochem Soc Trans 2023; 51:331-342. [PMID: 36815702 PMCID: PMC9987998 DOI: 10.1042/bst20220833] [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: 12/10/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/24/2023]
Abstract
Calcium/calmodulin-dependent protein kinase kinase 2 (CaMKK2) is a serine/threonine-protein kinase, that is involved in maintaining various physiological and cellular processes within the cell that regulate energy homeostasis and cell growth. CaMKK2 regulates glucose metabolism by the activation of downstream kinases, AMP-activated protein kinase (AMPK) and other calcium/calmodulin-dependent protein kinases. Consequently, its deregulation has a role in multiple human metabolic diseases including obesity and cancer. Despite the importance of CaMKK2, its signalling pathways and pathological mechanisms are not completely understood. Recent work has been aimed at broadening our understanding of the biological functions of CaMKK2. These studies have uncovered new interaction partners that have led to the description of new functions that include lipogenesis and Golgi vesicle trafficking. Here, we review recent insights into the role of CaMKK2 in membrane trafficking mechanisms and discuss the functional implications in a cellular context and for disease.
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48
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Wieder N, Fried JC, Kim C, Sidhom EH, Brown MR, Marshall JL, Arevalo C, Dvela-Levitt M, Kost-Alimova M, Sieber J, Gabriel KR, Pacheco J, Clish C, Abbasi HS, Singh S, Rutter J, Therrien M, Yoon H, Lai ZW, Baublis A, Subramanian R, Devkota R, Small J, Sreekanth V, Han M, Lim D, Carpenter AE, Flannick J, Finucane H, Haigis MC, Claussnitzer M, Sheu E, Stevens B, Wagner BK, Choudhary A, Shaw JL, Pablo JL, Greka A. FALCON systematically interrogates free fatty acid biology and identifies a novel mediator of lipotoxicity. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.19.529127. [PMID: 36865221 PMCID: PMC9979987 DOI: 10.1101/2023.02.19.529127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Cellular exposure to free fatty acids (FFA) is implicated in the pathogenesis of obesity-associated diseases. However, studies to date have assumed that a few select FFAs are representative of broad structural categories, and there are no scalable approaches to comprehensively assess the biological processes induced by exposure to diverse FFAs circulating in human plasma. Furthermore, assessing how these FFA- mediated processes interact with genetic risk for disease remains elusive. Here we report the design and implementation of FALCON (Fatty Acid Library for Comprehensive ONtologies) as an unbiased, scalable and multimodal interrogation of 61 structurally diverse FFAs. We identified a subset of lipotoxic monounsaturated fatty acids (MUFAs) with a distinct lipidomic profile associated with decreased membrane fluidity. Furthermore, we developed a new approach to prioritize genes that reflect the combined effects of exposure to harmful FFAs and genetic risk for type 2 diabetes (T2D). Importantly, we found that c-MAF inducing protein (CMIP) protects cells from exposure to FFAs by modulating Akt signaling and we validated the role of CMIP in human pancreatic beta cells. In sum, FALCON empowers the study of fundamental FFA biology and offers an integrative approach to identify much needed targets for diverse diseases associated with disordered FFA metabolism. Highlights FALCON (Fatty Acid Library for Comprehensive ONtologies) enables multimodal profiling of 61 free fatty acids (FFAs) to reveal 5 FFA clusters with distinct biological effectsFALCON is applicable to many and diverse cell typesA subset of monounsaturated FAs (MUFAs) equally or more toxic than canonical lipotoxic saturated FAs (SFAs) leads to decreased membrane fluidityNew approach prioritizes genes that represent the combined effects of environmental (FFA) exposure and genetic risk for diseaseC-Maf inducing protein (CMIP) is identified as a suppressor of FFA-induced lipotoxicity via Akt-mediated signaling.
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Affiliation(s)
- Nicolas Wieder
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
- Department of Neurology with Experimental Neurology, Charité, Berlin, Germany
| | - Juliana Coraor Fried
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
| | - Choah Kim
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
| | - Eriene-Heidi Sidhom
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
| | | | | | | | - Moran Dvela-Levitt
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
- The Mina and Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | | | - Jonas Sieber
- Department of Endocrinology, Metabolism and Cardiovascular Systems, University of Fribourg, Fribourg, Switzerland
| | | | | | - Clary Clish
- Broad Institute of MIT and Harvard, Cambridge, USA
| | | | | | - Justine Rutter
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
| | | | - Haejin Yoon
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Ludwig Center for Cancer Research at Harvard, Boston, MA 02115, USA
| | - Zon Weng Lai
- Harvard Chan Advanced Multiomics Platform, Harvard T.H. Chan School of Public Health, Boston MA 02115 USA
| | - Aaron Baublis
- Harvard Chan Advanced Multiomics Platform, Harvard T.H. Chan School of Public Health, Boston MA 02115 USA
| | - Renuka Subramanian
- Laboratory for Surgical and Metabolic Research, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Ranjan Devkota
- Broad Institute of MIT and Harvard, Cambridge, USA
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Jonnell Small
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Vedagopuram Sreekanth
- Broad Institute of MIT and Harvard, Cambridge, USA
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, MA, USA
| | | | - Donghyun Lim
- Broad Institute of MIT and Harvard, Cambridge, USA
| | | | - Jason Flannick
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
- Division of Genetics and Genomics, Boston Children’s Hospital, Boston, MA, USA
| | - Hilary Finucane
- Broad Institute of MIT and Harvard, Cambridge, USA
- Analytic and Translational Genetics Unit, Mass General Hospital, Boston, MA, USA
| | - Marcia C. Haigis
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Cell Biology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Ludwig Center for Cancer Research at Harvard, Boston, MA 02115, USA
| | - Melina Claussnitzer
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
- Metabolism Program, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Eric Sheu
- Laboratory for Surgical and Metabolic Research, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
| | - Beth Stevens
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
- Boston Children’s Hospital, F.M. Kirby Neurobiology Center, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
| | - Bridget K. Wagner
- Broad Institute of MIT and Harvard, Cambridge, USA
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Amit Choudhary
- Broad Institute of MIT and Harvard, Cambridge, USA
- Harvard Medical School, Boston, USA
- Chemical Biology and Therapeutics Science, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Divisions of Renal Medicine and Engineering, Brigham and Women’s Hospital, Boston, MA, USA
| | | | | | - Anna Greka
- Broad Institute of MIT and Harvard, Cambridge, USA
- Department of Medicine, Brigham and Women’s Hospital, Boston USA
- Harvard Medical School, Boston, USA
- Lead Contact
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Rohbeck E, Niersmann C, Köhrer K, Wachtmeister T, Roden M, Eckel J, Romacho T. Positive allosteric GABA A receptor modulation counteracts lipotoxicity-induced gene expression changes in hepatocytes in vitro. Front Physiol 2023; 14:1106075. [PMID: 36860523 PMCID: PMC9968943 DOI: 10.3389/fphys.2023.1106075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 01/31/2023] [Indexed: 02/16/2023] Open
Abstract
Introduction: We have previously shown that the novel positive allosteric modulator of the GABAA receptor, HK4, exerts hepatoprotective effects against lipotoxicity-induced apoptosis, DNA damage, inflammation and ER stress in vitro. This might be mediated by downregulated phosphorylation of the transcription factors NF-κB and STAT3. The current study aimed to investigate the effect of HK4 on lipotoxicity-induced hepatocyte injury at the transcriptional level. Methods: HepG2 cells were treated with palmitate (200 μM) in the presence or absence of HK4 (10 μM) for 7 h. Total RNA was isolated and the expression profiles of mRNAs were assessed. Differentially expressed genes were identified and subjected to the DAVID database and Ingenuity Pathway Analysis software for functional and pathway analysis, all under appropriate statistical testing. Results: Transcriptomic analysis showed substantial modifications in gene expression in response to palmitate as lipotoxic stimulus with 1,457 differentially expressed genes affecting lipid metabolism, oxidative phosphorylation, apoptosis, oxidative and ER stress among others. HK4 preincubation resulted in the prevention of palmitate-induced dysregulation by restoring initial gene expression pattern of untreated hepatocytes comprising 456 genes. Out of the 456 genes, 342 genes were upregulated and 114 downregulated by HK4. Enriched pathways analysis of those genes by Ingenuity Pathway Analysis, pointed towards oxidative phosphorylation, mitochondrial dysregulation, protein ubiquitination, apoptosis, and cell cycle regulation as affected pathways. These pathways are regulated by the key upstream regulators TP53, KDM5B, DDX5, CAB39 L and SYVN1, which orchestrate the metabolic and oxidative stress responses including modulation of DNA repair and degradation of ER stress-induced misfolded proteins in the presence or absence of HK4. Discussion: We conclude that HK4 specifically targets mitochondrial respiration, protein ubiquitination, apoptosis and cell cycle. This not only helps to counteract lipotoxic hepatocellular injury through modification of gene expression, but - by targeting transcription factors responsible for DNA repair, cell cycle progression and ER stress - might even prevent lipotoxic mechanisms. These findings suggest that HK4 has a great potential for the treatment of non-alcoholic fatty liver disease (NAFLD).
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Affiliation(s)
- Elisabeth Rohbeck
- German Diabetes Center, Institute for Clinical Diabetology, Leibniz Center for Diabetes Research at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research (DZD), Partner Düsseldorf, München-Neuherberg, Germany,CureDiab Metabolic Research GmbH, Düsseldorf, Germany
| | - Corinna Niersmann
- German Diabetes Center, Institute for Clinical Diabetology, Leibniz Center for Diabetes Research at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research (DZD), Partner Düsseldorf, München-Neuherberg, Germany,CureDiab Metabolic Research GmbH, Düsseldorf, Germany
| | - Karl Köhrer
- Biological and Medical Research Centre (BMFZ), Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Thorsten Wachtmeister
- Biological and Medical Research Centre (BMFZ), Medical Faculty, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Michael Roden
- German Diabetes Center, Institute for Clinical Diabetology, Leibniz Center for Diabetes Research at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany,German Center for Diabetes Research (DZD), Partner Düsseldorf, München-Neuherberg, Germany,Department of Endocrinology and Diabetology, Medical Faculty and University Hospital Düsseldorf, Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany
| | - Jürgen Eckel
- German Diabetes Center, Institute for Clinical Diabetology, Leibniz Center for Diabetes Research at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany,CureDiab Metabolic Research GmbH, Düsseldorf, Germany
| | - Tania Romacho
- German Diabetes Center, Institute for Clinical Diabetology, Leibniz Center for Diabetes Research at Heinrich-Heine-University Düsseldorf, Düsseldorf, Germany,Chronic Complications of Diabetes Lab (ChroCoDiL), Department of Nursing Sciences, Physiotherapy and Medicine, Faculty of Health Sciences, University of Almería, Almería, Spain,*Correspondence: Tania Romacho,
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Ling G, Bruno J, Albert SG, Dhindsa S. Fatty acids as a direct regulator of aldosterone hypersecretion. Mol Cell Endocrinol 2023; 561:111836. [PMID: 36549461 DOI: 10.1016/j.mce.2022.111836] [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: 07/25/2022] [Revised: 12/15/2022] [Accepted: 12/17/2022] [Indexed: 12/23/2022]
Abstract
Primary hyperaldosteronism is a major cause of secondary hypertension and carries additional cardiovascular risks beyond that of the elevated blood pressure. Primary hyperaldosteronism is more prevalent in obese people, and weight loss reduces aldosterone levels. It needs to be determined whether obesity related factors directly contribute to the pathogenesis of primary hyperaldosteronism. Here we show that the non-esterified fatty acids (NEFA) palmitic acid, and to a lesser extent, linoleic acid significantly stimulated aldosterone production and steroid enzyme induction in adrenocortical HAC15 cells of human origin. Palmitic acid, linoleic acid, and to a much lesser extent, oleic acid induced the expression of aldosterone synthase. Induction of the Steroidogenic Acute Regulatory Protein (StAR) was modest. Increased aldosterone secretion was independent of fatty acid beta-oxidation in the mitochondria but may involve free fatty acid receptor 1 (FFAR1/GPR40) and endoplasmic reticulum (ER) stress. Palmitic acid and linoleic acid induced the expression of C/EBP Homologous Protein (CHOP), a marker of ER stress, correlating with their ability to induce aldosterone synthase gene expression. Palmitic acid, but not linoleic acid decreased mitochondrial potentials and induced uncoupling protein 2 (UCP2). Palmitic acid enhanced, while docosahexaenoic acid (DHA) suppressed aldosterone response to angiotensin II (Ang-II). Our study provides evidence that NEFAs modulate aldosterone production, and further suggests that hyperaldosteronism shares similar pathogenesis with other obesity-related disorders such as metabolic syndrome.
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Affiliation(s)
- Guoyu Ling
- Department of Internal Medicine, Division of Endocrinology, Saint Louis University School of Medicine, Saint Louis, MO, 63110, USA.
| | - Jonathan Bruno
- Department of Internal Medicine, Division of Endocrinology, Saint Louis University School of Medicine, Saint Louis, MO, 63110, USA
| | - Stewart G Albert
- Department of Internal Medicine, Division of Endocrinology, Saint Louis University School of Medicine, Saint Louis, MO, 63110, USA
| | - Sandeep Dhindsa
- Department of Internal Medicine, Division of Endocrinology, Saint Louis University School of Medicine, Saint Louis, MO, 63110, USA
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