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Talandashti R, van Ek L, Gehin C, Xue D, Moqadam M, Gavin AC, Reuter N. Membrane specificity of the human cholesterol transfer protein STARD4. J Mol Biol 2024; 436:168572. [PMID: 38615744 DOI: 10.1016/j.jmb.2024.168572] [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: 01/26/2024] [Revised: 03/28/2024] [Accepted: 04/09/2024] [Indexed: 04/16/2024]
Abstract
STARD4 regulates cholesterol homeostasis by transferring cholesterol between the plasma membrane and endoplasmic reticulum. The STARD4 structure features a helix-grip fold surrounding a large hydrophobic cavity holding the sterol. Its access is controlled by a gate formed by the Ω1 and Ω4 loops and the C-terminal α-helix. Little is known about the mechanisms by which STARD4 binds to membranes and extracts/releases cholesterol. All available structures of STARD4 are without a bound sterol and display the same closed conformation of the gate. The cholesterol transfer activity of the mouse STARD4 is enhanced in the presence of anionic lipids, and in particular of phosphatidylinositol biphosphates (PIP2) for which two binding sites were proposed on the mouse STARD4 surface. Yet only one of these sites is conserved in human STARD4. We here report the results of a liposome microarray-based assay and microseconds-long molecular dynamics simulations of human STARD4 with complex lipid bilayers mimicking the composition of the donor and acceptor membranes. We show that the binding of apo form of human STARD4 is sensitive to the presence of PIP2 through two specific binding sites, one of which was not identified on mouse STARD4. We report two novel conformations of the gate in holo-STARD4: a yet-unobserved close conformation and an open conformation of Ω4 shedding light on the opening/closure mechanism needed for cholesterol uptake/release. Overall, the modulation of human STARD4 membrane-binding by lipid composition, and by the presence of the cargo supports the capacity of human STARD4 to achieve directed transfer between specific organelle membranes.
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Affiliation(s)
- Reza Talandashti
- Department of Chemistry, University of Bergen, Bergen 5020, Norway; Computational Biology Unit, Department of Informatics, University of Bergen, Bergen 5020, Norway
| | - Larissa van Ek
- Department of Cellular Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Charlotte Gehin
- École Polytechnique Fédérale de Lausanne EPFL, Lausanne, Switzerland
| | - Dandan Xue
- Department of Chemistry, University of Bergen, Bergen 5020, Norway; Computational Biology Unit, Department of Informatics, University of Bergen, Bergen 5020, Norway
| | - Mahmoud Moqadam
- Department of Chemistry, University of Bergen, Bergen 5020, Norway; Computational Biology Unit, Department of Informatics, University of Bergen, Bergen 5020, Norway
| | - Anne-Claude Gavin
- Department of Cellular Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Nathalie Reuter
- Department of Chemistry, University of Bergen, Bergen 5020, Norway; Computational Biology Unit, Department of Informatics, University of Bergen, Bergen 5020, Norway.
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2
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Mishra S, Manohar V, Chandel S, Manoj T, Bhattacharya S, Hegde N, Nath VR, Krishnan H, Wendling C, Di Mattia T, Martinet A, Chimata P, Alpy F, Raghu P. A genetic screen to uncover mechanisms underlying lipid transfer protein function at membrane contact sites. Life Sci Alliance 2024; 7:e202302525. [PMID: 38499328 PMCID: PMC10948934 DOI: 10.26508/lsa.202302525] [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: 12/13/2023] [Revised: 03/04/2024] [Accepted: 03/05/2024] [Indexed: 03/20/2024] Open
Abstract
Lipid transfer proteins mediate the transfer of lipids between organelle membranes, and the loss of function of these proteins has been linked to neurodegeneration. However, the mechanism by which loss of lipid transfer activity leads to neurodegeneration is not understood. In Drosophila photoreceptors, depletion of retinal degeneration B (RDGB), a phosphatidylinositol transfer protein, leads to defective phototransduction and retinal degeneration, but the mechanism by which loss of this activity leads to retinal degeneration is not understood. RDGB is localized to membrane contact sites through the interaction of its FFAT motif with the ER integral protein VAP. To identify regulators of RDGB function in vivo, we depleted more than 300 VAP-interacting proteins and identified a set of 52 suppressors of rdgB The molecular identity of these suppressors indicates a role of novel lipids in regulating RDGB function and of transcriptional and ubiquitination processes in mediating retinal degeneration in rdgB9 The human homologs of several of these molecules have been implicated in neurodevelopmental diseases underscoring the importance of VAP-mediated processes in these disorders.
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Affiliation(s)
- Shirish Mishra
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Vaishnavi Manohar
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Shabnam Chandel
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Tejaswini Manoj
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Subhodeep Bhattacharya
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Nidhi Hegde
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Vaisaly R Nath
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
- School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Harini Krishnan
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Corinne Wendling
- Université de Strasbourg, CNRS, Inserm, IGBMC UMR 7104- UMR-S 1258, Illkirch, France
| | - Thomas Di Mattia
- Université de Strasbourg, CNRS, Inserm, IGBMC UMR 7104- UMR-S 1258, Illkirch, France
| | - Arthur Martinet
- Université de Strasbourg, CNRS, Inserm, IGBMC UMR 7104- UMR-S 1258, Illkirch, France
| | - Prasanth Chimata
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
| | - Fabien Alpy
- Université de Strasbourg, CNRS, Inserm, IGBMC UMR 7104- UMR-S 1258, Illkirch, France
| | - Padinjat Raghu
- https://ror.org/03gf8rp76 National Centre for Biological Sciences-TIFR, GKVK Campus, Bangalore, India
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Lolicato F, Nickel W, Haucke V, Ebner M. Phosphoinositide switches in cell physiology - From molecular mechanisms to disease. J Biol Chem 2024; 300:105757. [PMID: 38364889 PMCID: PMC10944118 DOI: 10.1016/j.jbc.2024.105757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 02/18/2024] Open
Abstract
Phosphoinositides are amphipathic lipid molecules derived from phosphatidylinositol that represent low abundance components of biological membranes. Rather than serving as mere structural elements of lipid bilayers, they represent molecular switches for a broad range of biological processes, including cell signaling, membrane dynamics and remodeling, and many other functions. Here, we focus on the molecular mechanisms that turn phosphoinositides into molecular switches and how the dysregulation of these processes can lead to disease.
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Affiliation(s)
- Fabio Lolicato
- Heidelberg University Biochemistry Center, Heidelberg, Germany; Department of Physics, University of Helsinki, Helsinki, Finland.
| | - Walter Nickel
- Heidelberg University Biochemistry Center, Heidelberg, Germany
| | - Volker Haucke
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany; Department of Biology, Chemistry, Pharmacy, Freie Universität Berlin, Berlin, Germany; Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Michael Ebner
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany.
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4
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Sigrist SJ, Haucke V. Orchestrating vesicular and nonvesicular membrane dynamics by intrinsically disordered proteins. EMBO Rep 2023; 24:e57758. [PMID: 37680133 PMCID: PMC10626433 DOI: 10.15252/embr.202357758] [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: 07/05/2023] [Revised: 08/22/2023] [Accepted: 08/24/2023] [Indexed: 09/09/2023] Open
Abstract
Compartmentalization by membranes is a common feature of eukaryotic cells and serves to spatiotemporally confine biochemical reactions to control physiology. Membrane-bound organelles such as the endoplasmic reticulum (ER), the Golgi complex, endosomes and lysosomes, and the plasma membrane, continuously exchange material via vesicular carriers. In addition to vesicular trafficking entailing budding, fission, and fusion processes, organelles can form membrane contact sites (MCSs) that enable the nonvesicular exchange of lipids, ions, and metabolites, or the secretion of neurotransmitters via subsequent membrane fusion. Recent data suggest that biomolecule and information transfer via vesicular carriers and via MCSs share common organizational principles and are often mediated by proteins with intrinsically disordered regions (IDRs). Intrinsically disordered proteins (IDPs) can assemble via low-affinity, multivalent interactions to facilitate membrane tethering, deformation, fission, or fusion. Here, we review our current understanding of how IDPs drive the formation of multivalent protein assemblies and protein condensates to orchestrate vesicular and nonvesicular transport with a special focus on presynaptic neurotransmission. We further discuss how dysfunction of IDPs causes disease and outline perspectives for future research.
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Affiliation(s)
- Stephan J Sigrist
- Department of Biology, Chemistry, PharmacyFreie Universität BerlinBerlinGermany
| | - Volker Haucke
- Department of Biology, Chemistry, PharmacyFreie Universität BerlinBerlinGermany
- Department of Molecular Pharmacology and Cell BiologyLeibniz Forschungsinstitut für Molekulare Pharmakologie (FMP)BerlinGermany
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Zhang WD, Hu DM, Shi ZE, Wang QX, Zhang MY, Liu JY, Ji XL, Qu YQ. STARD12/14 are diagnostic and prognostic biomarkers of lung adenocarcinoma associated with epigenetic regulation, immune infiltration and ferroptosis. Int J Med Sci 2023; 20:1427-1447. [PMID: 37790851 PMCID: PMC10542189 DOI: 10.7150/ijms.84566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 06/21/2023] [Indexed: 10/05/2023] Open
Abstract
Background: Metabolic reprogramming plays an important role in tumor progression and antitumor immunity. START domain-containing proteins (STARDs) are responsible for lipid metabolism. However, the underlying functions of STARDs in lung adenocarcinoma (LUAD) have not been clarified yet. Methods: Oncomine, UALCAN, TCGA and CPTAC were used to explore the expression landscape and clinicopathological characteristics of STARDs in LUAD. Diagnostic and prognostic values were assessed by Kaplan-Meier Plotter, Cox regression analysis, and ROC curve. GeneMANIA, GO, KEGG and GSEA were applied for exploring the potential biological functions. Epigenetic process, including mutation and m6A modification were analyzed by cBioPortal and TCGA. TIMER, TISIDB and TCGA cohort provided an immune signature. The correlation between STARDs expression and ferroptosis was analyzed by TCGA. Finally, the STARDs expression were confirmed by RT-qPCR and western blot. Results: STARD5/10/14 were overexpressed in LUAD compared with normal, while STARD4/7/8/11/12/13 were relatively low. STARD5/12/14 levels were positively related to clinical and lymph node stage. Survival analysis showed high STARD12 expression was associated with favorable overall survival, disease special survival as well as disease free survival, while STARD14 showed the opposite. GSEA analysis found STARD12 and STARD14 were associated with glycolysis, oxidative phosphorylation and tumor related signaling pathways. STARD12 co-expressed genes participated in cell cycle and DNA replication, and STARD14 were enriched in ECM-receptor interaction. Both STARD12 and STARD14 were corelated with epigenetic regulation, especially TP53 mutation and m6A modification. STARD12 expression was positively correlated with TMB level. The level of STARD12 was significantly associated with the abundance of infiltrating immune cells, including B cells, CD8+T cells, macrophages, dendritic cells, and chemokine, receptor, MHC, immunostimulatory related genes. STARD14 was negatively associated with the infiltration of CD8+T cells, while positively with CCL28 and immune checkpoints, including CTLA4 as well as PD-L2. In addition, STARD12/14 could regulate the ferroptosis related genes. Conclusion: STARD12 and STARD14 were expected to be potential biomarkers for LUAD, which were associated with epigenetic regulation, immune infiltration and ferroptosis.
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Affiliation(s)
- Wen-Di Zhang
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Dong-Mei Hu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Zhuang-E Shi
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Qing-Xiang Wang
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Meng-Yu Zhang
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Jian-Yu Liu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
| | - Xiu-Li Ji
- Department of Pulmonary Disease, Jinan Traditional Chinese Medicine Hospital, Jinan, China
| | - Yi-Qing Qu
- Department of Pulmonary and Critical Care Medicine, Qilu Hospital of Shandong University, Shandong Key Laboratory of infectious respiratory diseases, Jinan, China
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6
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Das K, Nozaki T. Non-Vesicular Lipid Transport Machinery in Leishmania donovani: Functional Implications in Host-Parasite Interaction. Int J Mol Sci 2023; 24:10637. [PMID: 37445815 DOI: 10.3390/ijms241310637] [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: 01/01/2023] [Revised: 05/21/2023] [Accepted: 05/22/2023] [Indexed: 07/15/2023] Open
Abstract
Eukaryotic cells have distinct membrane-enclosed organelles, each with a unique biochemical signature and specialized function. The unique identity of each organelle is greatly governed by the asymmetric distribution and regulated intracellular movement of two important biomolecules, lipids, and proteins. Non-vesicular lipid transport mediated by lipid-transfer proteins (LTPs) plays essential roles in intra-cellular lipid trafficking and cellular lipid homeostasis, while vesicular transport regulates protein trafficking. A comparative analysis of non-vesicular lipid transport machinery in protists could enhance our understanding of parasitism and basis of eukaryotic evolution. Leishmania donovani, the trypanosomatid parasite, greatly depends on receptor-ligand mediated signalling pathways for cellular differentiation, nutrient uptake, secretion of virulence factors, and pathogenesis. Lipids, despite being important signalling molecules, have intracellular transport mechanisms that are largely unexplored in L. donovani. We have identified a repertoire of sixteen (16) potential lipid transfer protein (LTP) homologs based on a domain-based search on TriTrypDB coupled with bioinformatics analyses, which signifies the presence of well-organized lipid transport machinery in this parasite. We emphasized here their evolutionary uniqueness and conservation and discussed their potential implications for parasite biology with regards to future therapeutic targets against visceral leishmaniasis.
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Affiliation(s)
- Koushik Das
- Department of Allied Health Sciences, School of Health Sciences and Technology, University of Petroleum and Energy Studies, Dehradun 248007, India
| | - Tomoyoshi Nozaki
- Department of Biomedical Chemistry, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan
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7
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He Q, Qu M, Shen T, Su J, Xu Y, Xu C, Barkat MQ, Cai J, Zhu H, Zeng LH, Wu X. Control of mitochondria-associated endoplasmic reticulum membranes by protein S-palmitoylation: Novel therapeutic targets for neurodegenerative diseases. Ageing Res Rev 2023; 87:101920. [PMID: 37004843 DOI: 10.1016/j.arr.2023.101920] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/30/2023] [Accepted: 03/30/2023] [Indexed: 04/03/2023]
Abstract
Mitochondria-associated endoplasmic reticulum membranes (MAMs) are dynamic coupling structures between mitochondria and the endoplasmic reticulum (ER). As a new subcellular structure, MAMs combine the two critical organelle functions. Mitochondria and the ER could regulate each other via MAMs. MAMs are involved in calcium (Ca2+) homeostasis, autophagy, ER stress, lipid metabolism, etc. Researchers have found that MAMs are closely related to metabolic syndrome and neurodegenerative diseases (NDs). The formation of MAMs and their functions depend on specific proteins. Numerous protein enrichments, such as the IP3R-Grp75-VDAC complex, constitute MAMs. The changes in these proteins govern the interaction between mitochondria and the ER; they also affect the biological functions of MAMs. S-palmitoylation is a reversible protein post-translational modification (PTM) that mainly occurs on protein cysteine residues. More and more studies have shown that the S-palmitoylation of proteins is closely related to their membrane localization. Here, we first briefly describe the composition and function of MAMs, reviewing the component and biological roles of MAMs mediated by S-palmitoylation, elaborating on S-palmitoylated proteins in Ca2+ flux, lipid rafts, and so on. We try to provide new insight into the molecular basis of MAMs-related diseases, mainly NDs. Finally, we propose potential drug compounds targeting S-palmitoylation.
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Affiliation(s)
- Qiangqiang He
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Pharmacology, Hangzhou City University, Hangzhou 310015, China
| | - Meiyu Qu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Tingyu Shen
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Jiakun Su
- Technology Center, China Tobacco Jiangxi Industrial Co. Ltd., Nanchang 330096, China
| | - Yana Xu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Chengyun Xu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Muhammad Qasim Barkat
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Jibao Cai
- Technology Center, China Tobacco Jiangxi Industrial Co. Ltd., Nanchang 330096, China
| | - Haibin Zhu
- Department of Gynecology, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Ling-Hui Zeng
- Department of Pharmacology, Hangzhou City University, Hangzhou 310015, China.
| | - Ximei Wu
- Department of Pharmacology, Zhejiang University School of Medicine, Hangzhou 310058, China.
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8
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Montag K, Ivanov R, Bauer P. Role of SEC14-like phosphatidylinositol transfer proteins in membrane identity and dynamics. FRONTIERS IN PLANT SCIENCE 2023; 14:1181031. [PMID: 37255567 PMCID: PMC10225987 DOI: 10.3389/fpls.2023.1181031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 04/05/2023] [Indexed: 06/01/2023]
Abstract
Membrane identity and dynamic processes, that act at membrane sites, provide important cues for regulating transport, signal transduction and communication across membranes. There are still numerous open questions as to how membrane identity changes and the dynamic processes acting at the surface of membranes are regulated in diverse eukaryotes in particular plants and which roles are being played by protein interaction complexes composed of peripheral and integral membrane proteins. One class of peripheral membrane proteins conserved across eukaryotes comprises the SEC14-like phosphatidylinositol transfer proteins (SEC14L-PITPs). These proteins share a SEC14 domain that contributes to membrane identity and fulfills regulatory functions in membrane trafficking by its ability to sense, bind, transport and exchange lipophilic substances between membranes, such as phosphoinositides and diverse other lipophilic substances. SEC14L-PITPs can occur as single-domain SEC14-only proteins in all investigated organisms or with a modular domain structure as multi-domain proteins in animals and streptophytes (comprising charales and land plants). Here, we present an overview on the functional roles of SEC14L-PITPs, with a special focus on the multi-domain SEC14L-PITPs of the SEC14-nodulin and SEC14-GOLD group (PATELLINs, PATLs in plants). This indicates that SEC14L-PITPs play diverse roles from membrane trafficking to organism fitness in plants. We concentrate on the structure of SEC14L-PITPs, their ability to not only bind phospholipids but also other lipophilic ligands, and their ability to regulate complex cellular responses through interacting with proteins at membrane sites.
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Affiliation(s)
- Karolin Montag
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
| | - Rumen Ivanov
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
| | - Petra Bauer
- Institute of Botany, Heinrich Heine University, Düsseldorf, Germany
- Center of Excellence on Plant Sciences (CEPLAS), Germany
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9
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Moghimianavval H, Patel C, Mohapatra S, Hwang SW, Kayikcioglu T, Bashirzadeh Y, Liu AP, Ha T. Engineering Functional Membrane-Membrane Interfaces by InterSpy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2202104. [PMID: 35618485 PMCID: PMC9789529 DOI: 10.1002/smll.202202104] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 04/26/2022] [Indexed: 06/15/2023]
Abstract
Engineering synthetic interfaces between membranes has potential applications in designing non-native cellular communication pathways and creating synthetic tissues. Here, InterSpy is introduced as a synthetic biology tool consisting of a heterodimeric protein engineered to form and maintain membrane-membrane interfaces between apposing synthetic as well as cell membranes through the SpyTag/SpyCatcher interaction. The inclusion of split fluorescent protein fragments in InterSpy allows tracking of the formation of a membrane-membrane interface and reconstitution of functional fluorescent protein in the space between apposing membranes. First, InterSpy is demonstrated by testing split protein designs using a mammalian cell-free expression (CFE) system. By utilizing co-translational helix insertion, cell-free synthesized InterSpy fragments are incorporated into the membrane of liposomes and supported lipid bilayers with the desired topology. Functional reconstitution of split fluorescent protein between the membranes is strictly dependent on SpyTag/SpyCatcher. Finally, InterSpy is demonstrated in mammalian cells by detecting fluorescence reconstitution of split protein at the membrane-membrane interface between two cells each expressing a component of InterSpy. InterSpy demonstrates the power of CFE systems in the functional reconstitution of synthetic membrane interfaces via proximity-inducing proteins. This technology may also prove useful where cell-cell contacts and communication are recreated in a controlled manner using minimal components.
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Affiliation(s)
- Hossein Moghimianavval
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
| | - Chintan Patel
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Sonisilpa Mohapatra
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Sung-Won Hwang
- Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
| | - Tunc Kayikcioglu
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Yashar Bashirzadeh
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
| | - Allen P. Liu
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, 48109, USA
- Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, Michigan, 48109, USA
- Department of Biophysics, University of Michigan, Ann Arbor, Michigan, 48109, USA
| | - Taekjip Ha
- Department of Biophysics and Biophysical Chemistry, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Biology, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA
- Howard Hughes Medical Institute, Baltimore, MD 21205, USA
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10
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Martynenko E, Arkhipova T, Akhiyarova G, Sharipova G, Galin I, Seldimirova O, Ivanov R, Nuzhnaya T, Finkina E, Ovchinnikova T, Kudoyarova G. Effects of a Pseudomonas Strain on the Lipid Transfer Proteins, Appoplast Barriers and Activity of Aquaporins Associated with Hydraulic Conductance of Pea Plants. MEMBRANES 2023; 13:208. [PMID: 36837711 PMCID: PMC9959925 DOI: 10.3390/membranes13020208] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/23/2023] [Accepted: 02/02/2023] [Indexed: 06/16/2023]
Abstract
Lipid transfer proteins (LTPs) are known to be involved in suberin deposition in the Casparian bands of pea roots, thereby reinforcing apoplast barriers. Moreover, the Pseudomonas mandelii IB-Ki14 strain accelerated formation of the Casparian bands in wheat plants, although involvement of LTPs in the process was not studied. Here, we investigated the effects of P. mandelii IB-Ki14 on LTPs, formation of the Casparian bands, hydraulic conductance and activity of aquaporins (AQPs) in pea plants. RT PCR showed a 1.6-1.9-fold up-regulation of the PsLTP-coding genes and an increase in the abundance of LTP proteins in the phloem of pea roots induced by the treatment with P. mandelii IB-Ki14. The treatment was accompanied with increased deposition of suberin in the Casparian bands. Hydraulic conductance did not decrease in association with the bacterial treatment despite strengthening of the apoplast barriers. At the same time, the Fenton reagent, serving as an AQPs inhibitor, decreased hydraulic conductance to a greater extent in treated plants relative to the control group, indicating an increase in the AQP activity by the bacteria. We hypothesize that P. mandelii IB-Ki14 stimulates deposition of suberin, in the biosynthesis of which LTPs are involved, and increases aquaporin activity, which in turn prevents a decrease in hydraulic conductance due to formation of the apoplast barriers in pea roots.
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Affiliation(s)
- Elena Martynenko
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Tatiana Arkhipova
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Guzel Akhiyarova
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Guzel Sharipova
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Ilshat Galin
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Oksana Seldimirova
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Ruslan Ivanov
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Tatiana Nuzhnaya
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
| | - Ekaterina Finkina
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia
| | - Tatiana Ovchinnikova
- Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho-Maklaya Str., 16/10, 117997 Moscow, Russia
| | - Guzel Kudoyarova
- Ufa Institute of Biology, Ufa Federal Research Centre, RAS, Prospekt Oktyabrya, 69, 450054 Ufa, Russia
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11
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Chiu DC, Baskin JM. Organelle-Selective Membrane Labeling through Phospholipase D-Mediated Transphosphatidylation. JACS AU 2022; 2:2703-2713. [PMID: 36590261 PMCID: PMC9795463 DOI: 10.1021/jacsau.2c00419] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/30/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
The specialized functions of eukaryotic organelles have motivated chemical approaches for their selective tagging and visualization. Here, we develop chemoenzymatic tools using metabolic labeling of abundant membrane lipids for selective visualization of organelle compartments. Synthetic choline analogues with three N-methyl substituents replaced with 2-azidoethyl and additional alkyl groups enabled the generation of corresponding derivatives of phosphatidylcholine (PC), a ubiquitous and abundant membrane phospholipid. Subsequent bioorthogonal tagging via the strain-promoted azide-alkyne cycloaddition (SPAAC) with a single cyclooctyne-fluorophore reagent enabled differential labeling of the endoplasmic reticulum, the Golgi complex, mitochondria, and lysosomes depending upon the substitution pattern at the choline ammonium center. Key to the success of this strategy was the harnessing of both the organic cation transporter OCT1 to enable cytosolic delivery of these cationic metabolic probes and endogenous phospholipase D enzymes for rapid, one-step metabolic conversion of the choline analogues to the desired lipid products. Detailed analysis of the trafficking kinetics of both the SPAAC-tagged fluorescent PC analogues and their non-fluorescent, azide-containing precursors revealed that the latter exhibit time-dependent differences in organelle selectivity, suggesting their use as probes for visualizing intracellular lipid transport pathways. By contrast, the stable localizations of the fluorescent PC analogues will allow applications not only for organelle-selective imaging but also for local modulation of physiological events with organelle-level precision by tethering of bioactive small molecules, via click chemistry, within defined subcellular membrane environments.
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Affiliation(s)
- Din-Chi Chiu
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 14853, United
States
- Weill
Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jeremy M. Baskin
- Department
of Chemistry and Chemical Biology, Cornell
University, Ithaca, New York 14853, United
States
- Weill
Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853, United States
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12
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Andersson A, Fornasier M, Makasewicz K, Pálmadóttir T, Linse S, Sparr E, Jönsson P. Single-vesicle intensity and colocalization fluorescence microscopy to study lipid vesicle fusion, fission, and lipid exchange. Front Mol Neurosci 2022; 15:1007699. [PMID: 36533132 PMCID: PMC9751204 DOI: 10.3389/fnmol.2022.1007699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/18/2022] [Indexed: 12/19/2023] Open
Abstract
Interactions of lipid vesicles play important roles in a large variety of functions and dysfunctions in the human body. Vital for several biochemical functions is the interaction between monomeric proteins and lipid membranes, and the induced phenomena such as fusion between vesicles and cell membranes, lipid exchange between the membranes, or vesicle fission. Identification of single events and their frequency of occurrence would provide valuable information about protein-lipid interactions in both healthy and degenerative pathways. In this work, we present a single-vesicle intensity and colocalization fluorescence microscopy assay with a custom-written MATLAB analysis program. The assay can be used to study lipid exchange as well as vesicle fusion and fission between two vesicle populations labeled with different fluorescent dyes. Vesicles from the two populations are first mixed and docked to a glass surface. The sample is then simultaneously imaged using two separate wavelength channels monitoring intensity changes and colocalization of vesicles from the two populations. The monomeric pre-synaptic protein α-synuclein (α-syn) and small unilamellar vesicles consisting of 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 1,2-dioleoyl-sn-glycero-3-phospho-L-serine, (DOPS), and monosialotetrahexosylganglioside (GM1) were used as a model system to evaluate the method. From our analysis, neither α-syn induced fusion nor lipid exchange was observed for vesicles consisting of DOPC:DOPS (7:3). However, including 10% GM1 in the vesicles resulted in a 91% increase of the number of vesicles within 10 min, combined with a 57% decrease in the average fluorescence intensity per vesicle, indicating that approximately half of the vesicles underwent fission. The method facilitates the study of lipid vesicle fusion, fission, and lipid exchange under controlled conditions. It also allows these events to be studied for systems with more complex composition including exosomes and lipid-based drug carriers, to enable a better understanding of their physicochemical properties.
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Affiliation(s)
| | | | | | | | | | | | - Peter Jönsson
- Department of Chemistry, Lund University, Lund, Sweden
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13
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Arjona SP, Allen CNS, Santerre M, Gross S, Soboloff J, Booze R, Sawaya BE. Disruption of Mitochondrial-associated ER membranes by HIV-1 tat protein contributes to premature brain aging. CNS Neurosci Ther 2022; 29:365-377. [PMID: 36419337 PMCID: PMC9804058 DOI: 10.1111/cns.14011] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 10/04/2022] [Accepted: 10/19/2022] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION Mitochondrial-associated ER membranes (MAMs) control many cellular functions, including calcium and lipid exchange, intracellular trafficking, and mitochondrial biogenesis. The disruption of these functions contributes to neurocognitive disorders, such as spatial memory impairment and premature brain aging. Using neuronal cells, we demonstrated that HIV-1 Tat protein deregulates the mitochondria. METHODS& RESULTS To determine the mechanisms, we used a neuronal cell line and showed that Tat-induced changes in expression and interactions of both MAM-associated proteins and MAM tethering proteins. The addition of HIV-1 Tat protein alters expression levels of PTPIP51 and VAPB proteins in the MAM fraction but not the whole cell. Phosphorylation of PTPIP51 protein regulates its subcellular localization and function. We demonstrated that the Tat protein promotes PTPIP51 phosphorylation on tyrosine residues and prevents its binding to VAPB. Treatment of the cells with a kinase inhibitor restores the PTPIP51-VAPB interaction and overcomes the effect of Tat. CONCLUSION These results suggest that Tat disrupts the MAM, through the induction of PTPIP51 phosphorylation, leading to ROS accumulation, mitochondrial stress, and altered movement. Hence, we concluded that interfering in the MAM-associated cellular pathways contributes to spatial memory impairment and premature brain aging often observed in HIV-1-infected patients.
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Affiliation(s)
- Sterling P. Arjona
- Molecular Studies of Neurodegenerative Diseases Lab, Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA
| | - Charles N. S. Allen
- Molecular Studies of Neurodegenerative Diseases Lab, Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA
| | - Maryline Santerre
- Molecular Studies of Neurodegenerative Diseases Lab, Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA
| | - Scott Gross
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA
| | - Jonathan Soboloff
- Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA
| | - Rosemarie Booze
- Program of Behavioral Neuroscience, Department of PsychologyUniversity of South CarolinaColumbiaSouth CarolinaUSA
| | - Bassel E. Sawaya
- Molecular Studies of Neurodegenerative Diseases Lab, Fels Cancer Institute for Personalized Medicine, Lewis Katz School of MedicineTemple UniversityPhiladelphiaPennsylvaniaUSA,Department of Cancer and Cellular BiologyLewis Katz School of Medicine, Temple UniversityPhiladelphiaPennsylvaniaUSA,Department of Neural SciencesLewis Katz School of Medicine, Temple UniversityPhiladelphiaPennsylvaniaUSA
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14
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Proteomic mapping and optogenetic manipulation of membrane contact sites. Biochem J 2022; 479:1857-1875. [PMID: 36111979 PMCID: PMC9555801 DOI: 10.1042/bcj20220382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 08/31/2022] [Accepted: 09/01/2022] [Indexed: 11/17/2022]
Abstract
Membrane contact sites (MCSs) mediate crucial physiological processes in eukaryotic cells, including ion signaling, lipid metabolism, and autophagy. Dysregulation of MCSs is closely related to various diseases, such as type 2 diabetes mellitus (T2DM), neurodegenerative diseases, and cancers. Visualization, proteomic mapping and manipulation of MCSs may help the dissection of the physiology and pathology MCSs. Recent technical advances have enabled better understanding of the dynamics and functions of MCSs. Here we present a summary of currently known functions of MCSs, with a focus on optical approaches to visualize and manipulate MCSs, as well as proteomic mapping within MCSs.
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15
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Sassano ML, Felipe-Abrio B, Agostinis P. ER-mitochondria contact sites; a multifaceted factory for Ca2+ signaling and lipid transport. Front Cell Dev Biol 2022; 10:988014. [PMID: 36158205 PMCID: PMC9494157 DOI: 10.3389/fcell.2022.988014] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Accepted: 07/22/2022] [Indexed: 11/13/2022] Open
Abstract
Membrane contact sites (MCS) between organelles of eukaryotic cells provide structural integrity and promote organelle homeostasis by facilitating intracellular signaling, exchange of ions, metabolites and lipids and membrane dynamics. Cataloguing MCS revolutionized our understanding of the structural organization of a eukaryotic cell, but the functional role of MSCs and their role in complex diseases, such as cancer, are only gradually emerging. In particular, the endoplasmic reticulum (ER)-mitochondria contacts (EMCS) are key effectors of non-vesicular lipid trafficking, thereby regulating the lipid composition of cellular membranes and organelles, their physiological functions and lipid-mediated signaling pathways both in physiological and diseased conditions. In this short review, we discuss key aspects of the functional complexity of EMCS in mammalian cells, with particular emphasis on their role as central hubs for lipid transport between these organelles and how perturbations of these pathways may favor key traits of cancer cells.
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Affiliation(s)
- Maria Livia Sassano
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
| | - Blanca Felipe-Abrio
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
| | - Patrizia Agostinis
- Cell Death Research and Therapy Group, Department of Cellular and Molecular Medicine, Leuven, Belgium
- VIB Center for Cancer Biology, Leuven, Belgium
- *Correspondence: Patrizia Agostinis,
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16
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Linking Late Endosomal Cholesterol with Cancer Progression and Anticancer Drug Resistance. Int J Mol Sci 2022; 23:ijms23137206. [PMID: 35806209 PMCID: PMC9267071 DOI: 10.3390/ijms23137206] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 06/22/2022] [Accepted: 06/25/2022] [Indexed: 11/16/2022] Open
Abstract
Cancer cells undergo drastic metabolic adaptions to cover increased bioenergetic needs, contributing to resistance to therapies. This includes a higher demand for cholesterol, which often coincides with elevated cholesterol uptake from low-density lipoproteins (LDL) and overexpression of the LDL receptor in many cancers. This implies the need for cancer cells to accommodate an increased delivery of LDL along the endocytic pathway to late endosomes/lysosomes (LE/Lys), providing a rapid and effective distribution of LDL-derived cholesterol from LE/Lys to other organelles for cholesterol to foster cancer growth and spread. LDL-cholesterol exported from LE/Lys is facilitated by Niemann–Pick Type C1/2 (NPC1/2) proteins, members of the steroidogenic acute regulatory-related lipid transfer domain (StARD) and oxysterol-binding protein (OSBP) families. In addition, lysosomal membrane proteins, small Rab GTPases as well as scaffolding proteins, including annexin A6 (AnxA6), contribute to regulating cholesterol egress from LE/Lys. Here, we summarize current knowledge that links upregulated activity and expression of cholesterol transporters and related proteins in LE/Lys with cancer growth, progression and treatment outcomes. Several mechanisms on how cellular distribution of LDL-derived cholesterol from LE/Lys influences cancer cell behavior are reviewed, some of those providing opportunities for treatment strategies to reduce cancer progression and anticancer drug resistance.
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17
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Ferreri C, Sansone A, Chatgilialoglu C, Ferreri R, Amézaga J, Burgos MC, Arranz S, Tueros I. Critical Review on Fatty Acid-Based Food and Nutraceuticals as Supporting Therapy in Cancer. Int J Mol Sci 2022; 23:ijms23116030. [PMID: 35682708 PMCID: PMC9181022 DOI: 10.3390/ijms23116030] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/17/2022] [Accepted: 05/24/2022] [Indexed: 02/02/2023] Open
Abstract
Fatty acids have an important place in both biological and nutritional contexts and, from a clinical point of view, they have known consequences for diseases’ onset and development, including cancer. The use of fatty acid-based food and nutraceuticals to support cancer therapy is a multidisciplinary subject, involving molecular and clinical research. Knowledge regarding polyunsaturated fatty acids essentiality/oxidizability and the role of lipogenesis-desaturase pathways for cell growth, as well as oxidative reactivity in cancer cells, are discussed, since they can drive the choice of fatty acids using their multiple roles to support antitumoral drug activity. The central role of membrane fatty acid composition is highlighted for the application of membrane lipid therapy. As fatty acids are also known as biomarkers of cancer onset and progression, the personalization of the fatty acid-based therapy is also possible, taking into account other important factors such as formulation, bioavailability and the distribution of the supplementation. A holistic approach emerges combining nutra- and pharma-strategies in an appropriate manner, to develop further knowledge and applications in cancer therapy.
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Affiliation(s)
- Carla Ferreri
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy; (A.S.); (C.C.)
- Correspondence:
| | - Anna Sansone
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy; (A.S.); (C.C.)
| | - Chryssostomos Chatgilialoglu
- Istituto per la Sintesi Organica e la Fotoreattività, Consiglio Nazionale delle Ricerche, Via Piero Gobetti 101, 40129 Bologna, Italy; (A.S.); (C.C.)
| | - Rosaria Ferreri
- Department of Integrated Medicine, Tuscany Reference Centre for Integrated Medicine in the Hospital Pathway, Pitigliano Hospital, ASL Sudest Toscana, 58017 Pitigliano, Italy;
| | - Javier Amézaga
- AZTI, Food Research, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160 Derio, Spain; (J.A.); (M.C.B.); (S.A.); (I.T.)
| | - Mercedes Caro Burgos
- AZTI, Food Research, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160 Derio, Spain; (J.A.); (M.C.B.); (S.A.); (I.T.)
| | - Sara Arranz
- AZTI, Food Research, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160 Derio, Spain; (J.A.); (M.C.B.); (S.A.); (I.T.)
| | - Itziar Tueros
- AZTI, Food Research, Basque Research and Technology Alliance (BRTA), Parque Tecnológico de Bizkaia, Astondo Bidea, Edificio 609, 48160 Derio, Spain; (J.A.); (M.C.B.); (S.A.); (I.T.)
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18
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Zubair M, Hamzah R, Griffin R, Ali N. Identification and functional characterization of multiple inositol polyphosphate phosphatase1 (Minpp1) isoform-2 in exosomes with potential to modulate tumor microenvironment. PLoS One 2022; 17:e0264451. [PMID: 35235602 PMCID: PMC8890658 DOI: 10.1371/journal.pone.0264451] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 02/10/2022] [Indexed: 01/06/2023] Open
Abstract
Inositol polyphosphates (InsPs) play key signaling roles in diverse cellular functions, including calcium homeostasis, cell survival and death. Multiple inositol polyphosphate phosphatase 1 (Minpp1) affects the cellular levels of InsPs and cell functions. The Minpp1 is an endoplasmic reticulum (ER) resident but localizes away from its cytosolic InsPs substrates. The current study examines the heterogeneity of Minpp1 and the potential physiologic impact of Minpp1 isoforms, distinct motifs, subcellular distribution, and enzymatic potential. The NCBI database was used to analyze the proteome diversity of Minpp1 using bioinformatics tools. The analysis revealed that translation of three different Minpp1 variants resulted in three isoforms of Minpp1 of varying molecular weights. A link between the minpp1 variant-2 gene and ER-stress, using real-time PCR, suggests a functional similarity between minpp1 variant-1 and variant-2. A detailed study on motifs revealed Minpp1 isoform-2 is the only other isoform, besides isoform-1, that carries a phosphatase motif for InsPs hydrolysis but no ER-retention signal. The confocal microscopy revealed that the Minpp1 isoform-1 predominantly localized near the nucleus with a GRP-78 ER marker, while Minpp1 isoform-2 was scattered more towards the cell periphery where it co-localizes with the plasma membrane-destined multivesicular bodies biomarker CD63. MCF-7 cells were used to establish that Minpp1 isoform-2 is secreted into exosomes. Brefeldin A treatment resulted in overexpression of the exosome-associated Minpp1 isoform-2, suggesting its secretion via an unconventional route involving endocytic-generated vesicles and a link to ER stress. Results further demonstrated that the exosome-associated Minpp1 isoform-2 was enzymatically active. Overall, the data support the possibility that an extracellular form of enzymatically active Minpp1 isoform-2 mitigates any anti-proliferative actions of extracellular InsPs, thereby also impacting the makeup of the tumor microenvironment.
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Affiliation(s)
- Mohd Zubair
- Department of Biology, University of Arkansas at Little Rock, Little Rock, AR, United States of America
| | - Rabab Hamzah
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
- Center for Integrative Nanotechnology Sciences, University of Arkansas at Little Rock, Little Rock, AR, United States of America
| | - Robert Griffin
- Department of Radiation Oncology, University of Arkansas for Medical Sciences, Little Rock, AR, United States of America
| | - Nawab Ali
- Department of Biology, University of Arkansas at Little Rock, Little Rock, AR, United States of America
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19
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Malek M, Wawrzyniak AM, Ebner M, Puchkov D, Haucke V. Inositol triphosphate-triggered calcium release from the endoplasmic reticulum induces lysosome biogenesis via TFEB/TFE3. J Biol Chem 2022; 298:101740. [PMID: 35182526 PMCID: PMC8914386 DOI: 10.1016/j.jbc.2022.101740] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 02/02/2022] [Accepted: 02/08/2022] [Indexed: 12/14/2022] Open
Abstract
Lysosomes serve as dynamic regulators of cell and organismal physiology by integrating the degradation of macromolecules with receptor and nutrient signaling. Previous studies have established that activation of the transcription factor EB (TFEB) and transcription factor E3 (TFE3) induces the expression of lysosomal genes and proteins in signaling-inactive starved cells, that is, under conditions when activity of the master regulator of nutrient-sensing signaling mechanistic target of rapamycin complex 1 is repressed. How lysosome biogenesis is triggered in signaling-active cells is incompletely understood. Here, we identify a role for calcium release from the lumen of the endoplasmic reticulum in the control of lysosome biogenesis that is independent of mechanistic target of rapamycin complex 1. We show using functional imaging that calcium efflux from endoplasmic reticulum stores induced by inositol triphosphate accumulation upon depletion of inositol polyphosphate-5-phosphatase A, an inositol 5-phosphatase downregulated in cancer and defective in spinocerebellar ataxia, or receptor-mediated phospholipase C activation leads to the induction of lysosome biogenesis. This mechanism involves calcineurin and the nuclear translocation and elevated transcriptional activity of TFEB/TFE3. Our findings reveal a crucial function for inositol polyphosphate-5-phosphatase A–mediated triphosphate hydrolysis in the control of lysosome biogenesis via TFEB/TFE3, thereby contributing to our understanding how cells are able to maintain their lysosome content under conditions of active receptor and nutrient signaling.
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Affiliation(s)
- Mouhannad Malek
- Department of Molecular Pharmacology & Cell Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Anna M Wawrzyniak
- Department of Molecular Pharmacology & Cell Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Michael Ebner
- Department of Molecular Pharmacology & Cell Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Dmytro Puchkov
- Department of Molecular Pharmacology & Cell Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany
| | - Volker Haucke
- Department of Molecular Pharmacology & Cell Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Berlin, Germany; Faculty of Biology, Chemistry and Pharmacy, Freie Universität Berlin, Berlin, Germany.
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20
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Amador VC, dos Santos-Silva CA, Vilela LMB, Oliveira-Lima M, de Santana Rêgo M, Roldan-Filho RS, de Oliveira-Silva RL, Lemos AB, de Oliveira WD, Ferreira-Neto JRC, Crovella S, Benko-Iseppon AM. Lipid Transfer Proteins (LTPs)-Structure, Diversity and Roles beyond Antimicrobial Activity. Antibiotics (Basel) 2021; 10:1281. [PMID: 34827219 PMCID: PMC8615156 DOI: 10.3390/antibiotics10111281] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 01/21/2023] Open
Abstract
Lipid transfer proteins (LTPs) are among the most promising plant-exclusive antimicrobial peptides (AMPs). They figure among the most challenging AMPs from the point of view of their structural diversity, functions and biotechnological applications. This review presents a current picture of the LTP research, addressing not only their structural, evolutionary and further predicted functional aspects. Traditionally, LTPs have been identified by their direct isolation by biochemical techniques, whereas omics data and bioinformatics deserve special attention for their potential to bring new insights. In this context, new possible functions have been identified revealing that LTPs are actually multipurpose, with many additional predicted roles. Despite some challenges due to the toxicity and allergenicity of LTPs, a systematic review and search in patent databases, indicate promising perspectives for the biotechnological use of LTPs in human health and also plant defense.
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Affiliation(s)
- Vinícius Costa Amador
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Carlos André dos Santos-Silva
- Department of Advanced Diagnostics, Institute for Maternal and Child Health-IRCCS, Burlo Garofolo, 34100 Trieste, Italy;
| | - Lívia Maria Batista Vilela
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Marx Oliveira-Lima
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Mireli de Santana Rêgo
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Ricardo Salas Roldan-Filho
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Roberta Lane de Oliveira-Silva
- General Microbiology Laboratory, Agricultural Science Campus, Universidade Federal do Vale do São Francisco, Petrolina 56300-990, Brazil;
| | - Ayug Bezerra Lemos
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Wilson Dias de Oliveira
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - José Ribamar Costa Ferreira-Neto
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
| | - Sérgio Crovella
- Department of Biological and Environmental Sciences, College of Arts and Science, Qatar University, Doha 1883, Qatar;
| | - Ana Maria Benko-Iseppon
- Bioscience Centre, Genetics Department, Universidade Federal de Pernambuco, Recife 50670-420, Brazil; (V.C.A.); (L.M.B.V.); (M.O.-L.); (M.d.S.R.); (R.S.R.-F.); (A.B.L.); (W.D.d.O.); (J.R.C.F.-N.)
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21
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Asif K, Memeo L, Palazzolo S, Frión-Herrera Y, Parisi S, Caligiuri I, Canzonieri V, Granchi C, Tuccinardi T, Rizzolio F. STARD3: A Prospective Target for Cancer Therapy. Cancers (Basel) 2021; 13:4693. [PMID: 34572920 PMCID: PMC8472075 DOI: 10.3390/cancers13184693] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/10/2021] [Indexed: 12/24/2022] Open
Abstract
Cancer is one of the major causes of death in developed countries and current therapies are based on surgery, chemotherapeutic agents, and radiation. To overcome side effects induced by chemo- and radiotherapy, in recent decades, targeted therapies have been proposed in second and even first lines. Targeted drugs act on the essential pathways involved in tumor induction, progression, and metastasis, basically all the hallmark of cancers. Among emerging pathways, the cholesterol metabolic pathway is a strong candidate for this purpose. Cancer cells have an accelerated metabolic rate and require a continuous supply of cholesterol for cell division and membrane renewal. Steroidogenic acute regulatory related lipid transfer (START) proteins are a family of proteins involved in the transfer of lipids and some of them are important in non-vesicular cholesterol transportation within the cell. The alteration of their expression levels is implicated in several diseases, including cancers. In this review, we report the latest discoveries on StAR-related lipid transfer protein domain 3 (STARD3), a member of the START family, which has a potential role in cancer, focusing on the structural and biochemical characteristics and mechanisms that regulate its activity. The role of the STARD3 protein as a molecular target for the development of cancer therapies is also discussed. As STARD3 is a key protein in the cholesterol movement in cancer cells, it is of interest to identify inhibitors able to block its activity.
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Affiliation(s)
- Kanwal Asif
- Department of Molecular Sciences and Nanosystems, PhD School in Science and Technology of Bio and Nanomaterials, Ca’ Foscari University of Venice, 30172 Venice, Italy;
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Lorenzo Memeo
- Department of Experimental Oncology, Mediterranean Institute of Oncology, 95029 Catania, Italy;
| | - Stefano Palazzolo
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Yahima Frión-Herrera
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy; or
| | - Salvatore Parisi
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Isabella Caligiuri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
| | - Vincenzo Canzonieri
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
- Department of Medical, Surgical and Health Sciences, University of Trieste, 34149 Trieste, Italy
| | - Carlotta Granchi
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy; (C.G.); (T.T.)
| | - Tiziano Tuccinardi
- Department of Pharmacy, University of Pisa, 56126 Pisa, Italy; (C.G.); (T.T.)
| | - Flavio Rizzolio
- Pathology Unit, Centro di Riferimento Oncologico di Aviano (C.R.O.) IRCCS, 33081 Aviano, Italy; (S.P.); (S.P.); (V.C.)
- Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172 Venice, Italy; or
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22
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Avula K, Singh B, Kumar PV, Syed GH. Role of Lipid Transfer Proteins (LTPs) in the Viral Life Cycle. Front Microbiol 2021; 12:673509. [PMID: 34248884 PMCID: PMC8260984 DOI: 10.3389/fmicb.2021.673509] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 05/17/2021] [Indexed: 12/14/2022] Open
Abstract
Viruses are obligate parasites that depend on the host cell machinery for their replication and dissemination. Cellular lipids play a central role in multiple stages of the viral life cycle such as entry, replication, morphogenesis, and egress. Most viruses reorganize the host cell membranes for the establishment of viral replication complex. These specialized structures allow the segregation of replicating viral RNA from ribosomes and protect it from host nucleases. They also facilitate localized enrichment of cellular components required for viral replication and assembly. The specific composition of the lipid membrane governs its ability to form negative or positive curvature and possess a rigid or flexible form, which is crucial for membrane rearrangement and establishment of viral replication complexes. In this review, we highlight how different viruses manipulate host lipid transfer proteins and harness their functions to enrich different membrane compartments with specific lipids in order to facilitate multiple aspects of the viral life cycle.
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Affiliation(s)
- Kiran Avula
- Virus-Host Interaction Lab, Institute of Life Sciences, Bhubaneshwar, India.,Regional Centre for Biotechnology, Faridabad, India
| | - Bharati Singh
- Virus-Host Interaction Lab, Institute of Life Sciences, Bhubaneshwar, India.,School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneshwar, India
| | - Preethy V Kumar
- Virus-Host Interaction Lab, Institute of Life Sciences, Bhubaneshwar, India.,School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneshwar, India
| | - Gulam H Syed
- Virus-Host Interaction Lab, Institute of Life Sciences, Bhubaneshwar, India
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23
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Amodio G, Pagliara V, Moltedo O, Remondelli P. Structural and Functional Significance of the Endoplasmic Reticulum Unfolded Protein Response Transducers and Chaperones at the Mitochondria-ER Contacts: A Cancer Perspective. Front Cell Dev Biol 2021; 9:641194. [PMID: 33842465 PMCID: PMC8033034 DOI: 10.3389/fcell.2021.641194] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 02/22/2021] [Indexed: 01/15/2023] Open
Abstract
In the last decades, the endoplasmic reticulum (ER) has emerged as a key coordinator of cellular homeostasis, thanks to its physical interconnection to almost all intracellular organelles. In particular, an intense and mutual crosstalk between the ER and mitochondria occurs at the mitochondria–ER contacts (MERCs). MERCs ensure a fine-tuned regulation of fundamental cellular processes, involving cell fate decision, mitochondria dynamics, metabolism, and proteostasis, which plays a pivotal role in the tumorigenesis and therapeutic response of cancer cells. Intriguingly, recent studies have shown that different components of the unfolded protein response (UPR) machinery, including PERK, IRE1α, and ER chaperones, localize at MERCs. These proteins appear to exhibit multifaceted roles that expand beyond protein folding and UPR transduction and are often related to the control of calcium fluxes to the mitochondria, thus acquiring relevance to cell survival and death. In this review, we highlight the novel functions played by PERK, IRE1α, and ER chaperones at MERCs focusing on their impact on tumor development.
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Affiliation(s)
- Giuseppina Amodio
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana," University of Salerno, Baronissi, Italy
| | - Valentina Pagliara
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana," University of Salerno, Baronissi, Italy
| | - Ornella Moltedo
- Department of Pharmacy, University of Salerno, Fisciano, Italy
| | - Paolo Remondelli
- Department of Medicine, Surgery and Dentistry "Scuola Medica Salernitana," University of Salerno, Baronissi, Italy
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24
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Shoaib N, Bashir M, Munir R, Rashid R, Zaidi N. Expression of lipid transport-associated genes in lipid-deprived cancer cells. Genes Cells 2021; 26:246-253. [PMID: 33569881 DOI: 10.1111/gtc.12838] [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: 09/24/2020] [Revised: 01/26/2021] [Accepted: 02/04/2021] [Indexed: 11/29/2022]
Abstract
Cancer cells are known to significantly alter their lipid profiles in response to changes in extracellular lipid availability. Recent studies have shown that in response to lipid deprivation, cancer cells display significant changes in their cellular lipid homeostasis. These changes have been linked to the modulation of de novo lipid synthesis pathways that are markedly altered under lipid-deprived growth conditions. However, the effects of such environment on intracellular lipid trafficking-that could also affect cellular lipid homeostasis-have not been widely investigated. The presented work studies the effect of lipid deprivation on expression of genes for lipid transport proteins (LTPs) in cancer cell lines.
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Affiliation(s)
- Naila Shoaib
- Cancer Biology Lab, Institute of Microbiology & Molecular Genetics (MMG), University of the Punjab, Lahore, Pakistan.,Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
| | - Muniba Bashir
- Cancer Biology Lab, Institute of Microbiology & Molecular Genetics (MMG), University of the Punjab, Lahore, Pakistan
| | - Rimsha Munir
- Cancer Biology Lab, Institute of Microbiology & Molecular Genetics (MMG), University of the Punjab, Lahore, Pakistan.,Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan.,Hormone Lab Lahore, Lahore, Pakistan
| | - Rida Rashid
- Cancer Biology Lab, Institute of Microbiology & Molecular Genetics (MMG), University of the Punjab, Lahore, Pakistan
| | - Nousheen Zaidi
- Cancer Biology Lab, Institute of Microbiology & Molecular Genetics (MMG), University of the Punjab, Lahore, Pakistan.,Cancer Research Centre (CRC), University of the Punjab, Lahore, Pakistan
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25
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Gil-Hernández A, Arroyo-Campuzano M, Simoni-Nieves A, Zazueta C, Gomez-Quiroz LE, Silva-Palacios A. Relevance of Membrane Contact Sites in Cancer Progression. Front Cell Dev Biol 2021; 8:622215. [PMID: 33511135 PMCID: PMC7835521 DOI: 10.3389/fcell.2020.622215] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 12/10/2020] [Indexed: 01/01/2023] Open
Abstract
Membrane contact sites (MCS) are typically defined as areas of proximity between heterologous or homologous membranes characterized by specific proteins. The study of MCS is considered as an emergent field that shows how crucial organelle interactions are in cell physiology. MCS regulate a myriad of physiological processes such as apoptosis, calcium, and lipid signaling, just to name a few. The membranal interactions between the endoplasmic reticulum (ER)–mitochondria, the ER–plasma membrane, and the vesicular traffic have received special attention in recent years, particularly in cancer research, in which it has been proposed that MCS regulate tumor metabolism and fate, contributing to their progression. However, as the therapeutic or diagnostic potential of MCS has not been fully revisited, in this review, we provide recent information on MCS relevance on calcium and lipid signaling in cancer cells and on its role in tumor progression. We also describe some proteins associated with MCS, like CERT, STIM1, VDAC, and Orai, that impact on cancer progression and that could be a possible diagnostic marker. Overall, these information might contribute to the understanding of the complex biology of cancer cells.
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Affiliation(s)
- Aurora Gil-Hernández
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Miguel Arroyo-Campuzano
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Arturo Simoni-Nieves
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico
| | - Cecilia Zazueta
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
| | - Luis Enrique Gomez-Quiroz
- Departamento de Ciencias de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, Mexico City, Mexico
| | - Alejandro Silva-Palacios
- Departamento de Biomedicina Cardiovascular, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico
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26
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Lerebours A, Robson S, Sharpe C, Nagorskaya L, Gudkov D, Haynes-Lovatt C, Smith JT. Transcriptional Changes in the Ovaries of Perch from Chernobyl. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:10078-10087. [PMID: 32686935 DOI: 10.1021/acs.est.0c02575] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Fish have been highly exposed to radiation in freshwater systems after the Chernobyl Nuclear Power Plant (NPP) accident in 1986 and in freshwater and marine systems after the more recent Fukushima NPP accident in 2011. In the years after the accident, the radioactivity levels rapidly declined due to radioactive decay and environmental processes, but chronic lower dose exposures persisted. To gain insights into the long-term effects of environmental low dose radiation on fish ovaries development, a high-throughput transcriptomic approach including a de novo assembly was applied to different gonad phenotypes of female perch: developed gonads from reference lakes, developed/irradiated from medium contaminated lake, and both developed/irradiated and undeveloped from more highly contaminated lakes. This is the most comprehensive analysis to date of the gene responses in wildlife reproductive system to radiation. Some gene responses that were modulated in irradiated gonads were found to be involved in biological processes including cell differentiation and proliferation (ggnb2, mod5, rergl), cytoskeleton organization (k1C18, mtpn), gonad development (nell2, tcp4), lipid metabolism (ldah, at11b, nltp), reproduction (cyb5, cyp17A, ovos), DNA damage repair (wdhd1, rad51, hus1), and epigenetic mechanisms (dmap1). Identification of these genes provides a better understanding of the underlying molecular mechanisms underpinning the development of the gonad phenotypes of wild perch and how fish may respond to chronic exposure to radiation in their natural environment, though causal attribution of gene responses remains unclear in the undeveloped gonads.
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Affiliation(s)
- Adélaïde Lerebours
- School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth PO1 3QL, United Kingdom
- School of Biological Sciences, University of Portsmouth, Portsmouth PO1 2DY, United Kingdom
| | - Samuel Robson
- Centre for Enzyme Innovation, University of Portsmouth, Portsmouth PO1 2DT, United Kingdom
| | - Colin Sharpe
- School of Biological Sciences, University of Portsmouth, Portsmouth PO1 2DY, United Kingdom
| | - Liubov Nagorskaya
- Applied Science Center for Bioresources of the National Academy of Sciences of Belarus, Minsk 220072, Belarus
| | - Dmitri Gudkov
- Institute of Hydrobiology of the National Academy of Sciences of Ukraine, Kiev UA-04210, Ukraine
| | | | - Jim T Smith
- School of the Environment, Geography and Geosciences, University of Portsmouth, Portsmouth PO1 3QL, United Kingdom
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27
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Liu H, Liu X, Zhuang H, Fan H, Zhu D, Xu Y, He P, Liu J, Feng D. Mitochondrial Contact Sites in Inflammation-Induced Cardiovascular Disease. Front Cell Dev Biol 2020; 8:692. [PMID: 32903766 PMCID: PMC7438832 DOI: 10.3389/fcell.2020.00692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 07/08/2020] [Indexed: 12/16/2022] Open
Abstract
The mitochondrion, the ATP-producing center, is both physically and functionally associated with almost all other organelles in the cell. Mitochondrial-associated membranes (MAMs) are involved in a variety of biological processes, such as lipid exchange, protein transport, mitochondrial fission, mitophagy, and inflammation. Several inflammation-related diseases in the cardiovascular system involve several intracellular events including mitochondrial dysfunction as well as disruption of MAMs. Therefore, an in-depth exploration of the function of MAMs will be of great significance for us to understand the initiation, progression, and clinical complications of cardiovascular disease (CVD). In this review, we summarize the recent advances in our knowledge of MAM regulation and function in CVD-related cells. We discuss the potential roles of MAMs in activating inflammation to influence the development of CVD.
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Affiliation(s)
- Hao Liu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Xiao Liu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Haixia Zhuang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Hualin Fan
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China.,Guangdong Provincial People's Hospital, School of Medicine, South China University of Technology, Guangzhou, China
| | - Dongxing Zhu
- Guangzhou Institute of Cardiovascular Diseases, The Second Affiliated Hospital, Key Laboratory of Cardiovascular Diseases, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Yiming Xu
- School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Pengcheng He
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jinbao Liu
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
| | - Du Feng
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Guangzhou, China.,Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation, State Key Laboratory of Respiratory Disease, School of Basic Medical Sciences, Guangzhou Medical University, Guangzhou, China
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28
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Silva BSC, DiGiovanni L, Kumar R, Carmichael RE, Kim PK, Schrader M. Maintaining social contacts: The physiological relevance of organelle interactions. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118800. [PMID: 32712071 PMCID: PMC7377706 DOI: 10.1016/j.bbamcr.2020.118800] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/12/2020] [Accepted: 07/19/2020] [Indexed: 02/07/2023]
Abstract
Membrane-bound organelles in eukaryotic cells form an interactive network to coordinate and facilitate cellular functions. The formation of close contacts, termed "membrane contact sites" (MCSs), represents an intriguing strategy for organelle interaction and coordinated interplay. Emerging research is rapidly revealing new details of MCSs. They represent ubiquitous and diverse structures, which are important for many aspects of cell physiology and homeostasis. Here, we provide a comprehensive overview of the physiological relevance of organelle contacts. We focus on mitochondria, peroxisomes, the Golgi complex and the plasma membrane, and discuss the most recent findings on their interactions with other subcellular organelles and their multiple functions, including membrane contacts with the ER, lipid droplets and the endosomal/lysosomal compartment.
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Affiliation(s)
- Beatriz S C Silva
- College of Life and Environmental Sciences, Biosciences, University of Exeter, Exeter EX4 4QD, Devon, UK
| | - Laura DiGiovanni
- Program in Cell Biology, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Rechal Kumar
- College of Life and Environmental Sciences, Biosciences, University of Exeter, Exeter EX4 4QD, Devon, UK
| | - Ruth E Carmichael
- College of Life and Environmental Sciences, Biosciences, University of Exeter, Exeter EX4 4QD, Devon, UK.
| | - Peter K Kim
- Program in Cell Biology, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada; Department of Biochemistry, University of Toronto, Toronto, ON, M5S 1A8, Canada.
| | - Michael Schrader
- College of Life and Environmental Sciences, Biosciences, University of Exeter, Exeter EX4 4QD, Devon, UK.
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