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Santos-Luna D, Sixto-López Y, Bravo-Alfaro D, Cano-Sarmiento C, García H, Correa-Basurto J. Design and simulation of a caprylic acid enzymatically modified phosphatidylcholine micelle using a coarse-grained molecular dynamics simulations approach. J Biomol Struct Dyn 2023; 41:13902-13913. [PMID: 36826442 DOI: 10.1080/07391102.2023.2180434] [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: 10/01/2022] [Accepted: 02/08/2023] [Indexed: 02/25/2023]
Abstract
Computationally simulated micelle models provide useful structural information on the molecular and biological sciences. One strategy to study the self-aggregation process of surfactant molecules that make up a micelle is through molecular dynamics (MD) simulations. In this study, a theoretical approach with a coarse-grained MD simulation (CG-MD) was employed to evaluate the critical micellar concentration (CMC), the micellization process, building a tridimensional (3D) model system of a micelle using data from the experimentally enzymatically modified phospholipids (PL) by phospholipase A1 (PA1). This required enzymatic interesterification of soybean phosphatidylcholine (PC) with caprylic acid, along with purification and characterization by chromatographic techniques to measure the esterified fatty acids and the corresponding PL composition. The number of molecules used in the CG-MD simulation system was determined from the experimental CMC data which was 0.025%. The molecular composition of the system is: 1 C 18:2, 2 C 8:0/8:0, 3 C 8:0/18:3n-9, 4 C 8:0/18:0, 5 C8:0/18:2n-6, 6 C8:0/18:1n-9, and 7 C 8:0/16:0. According to our theoretical results, the micelle model is structurally stable with an average Rg of 3.64 ± 0.10 Å, and might have an elliptical form with a radius of 24.6 Å. Regarding CMC value there was a relationship between the experimental data of the modified PLs and the theoretical analysis by GC-MD, which suggest that the enzymatic modification of PLs does not affect their self-aggregation properties. Finally, the micellar system obtained in the current research can be used as a simple and useful model to design optimal biocompatible nanoemulsions as possible vehicles for bioactive small molecules.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Dalia Santos-Luna
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - Yudibeth Sixto-López
- Departamento de Química Farmacéutica y Orgánica, Facultad de Farmacia, Universidad de Granada, Campus de Cartuja, Granada, Spain
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation) SEPI-ESM, Instituto Politécnico Nacional, México, Mexico City, Mexico
| | - Diego Bravo-Alfaro
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - Cynthia Cano-Sarmiento
- CONACyT-Unidad de Investigación y Desarrollo de Alimentos, Tecnologico Nacional de México/IT de Veracruz, Veracruz, México
| | - Hugo García
- Unidad de Investigación y Desarrollo de Alimentos, Tecnológico Nacional de México/IT de Veracruz, Veracruz, México
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica (Laboratory for the Design and Development of New Drugs and Biotechnological Innovation) SEPI-ESM, Instituto Politécnico Nacional, México, Mexico City, Mexico
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2
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Knittel CH, Devaraj NK. Bioconjugation Strategies for Revealing the Roles of Lipids in Living Cells. Acc Chem Res 2022; 55:3099-3109. [PMID: 36215688 DOI: 10.1021/acs.accounts.2c00511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The structural boundaries of living cells are composed of numerous membrane-forming lipids. Lipids not only are crucial for the cellular compartmentalization but also are involved in cell signaling as well as energy storage. Abnormal lipid levels have been linked to severe human diseases such as cancer, multiple sclerosis, neurodegenerative diseases, as well as lysosomal storage disorders. Given their biological significance, there is immense interest in studying lipids and their effect on cells. However, limiting factors include the low solubility of lipids, their structural complexity, and the challenge of using genetic techniques to directly manipulate lipid structure. Current methods to study lipids rely mostly on lipidomics, which analyzes the composition of lipid extracts using mass spectrometry. Although, these efforts have successfully catalogued and profiled a great number of lipids in cells, many aspects about their exact functional role and subcellular distribution remain enigmatic.In this Account, we outline how our laboratory developed and applied different bioconjugation strategies to study the role of lipids and lipid modifications in cells. Inspired by our ongoing work on developing lipid bioconjugation strategies to generate artificial cell membranes, we developed a ceramide synthesis method in live cells using a salicylaldehyde ester that readily reacts with sphingosine in form of a traceless ceramide ligation. Our study not only confirmed existing knowledge about the association of ceramides with cell death, but also gave interesting new findings about the structure-function relationship of ceramides in apoptosis. Our initial efforts led us to investigate probes that detect endogenous sphingolipids using live cell imaging. We describe the development of a fluorogenic probe that reacts chemoselectively with sphingosine in living cells, enabling the detection of elevated endogenous levels of this biomarker in human disease. Building on our interest in the fluorescence labeling of lipids, we have also explored the use of bioorthogonal reactions to label chemically synthesized lipid probes. We discuss the development of photocaged dihydrotetrazine lipids, where the initiation of the bioorthogonal reaction can be triggered by visible light, allowing for live cell modification of membranes with spatiotemporal control.Finally, proteins are often post-translationally modified by lipids, which have important effects on protein subcellular localization and function. Controlling lipid modifications with small molecule probes could help reveal the function of lipid post-translational modifications and could potentially inspire novel therapeutic strategies. We describe how our previous studies on synthetic membrane formation inspired us to develop an amphiphilic cysteine derivative that depalmitoylates membrane-bound S-acylated proteins in live cells. Ultimately, we applied this amphiphile mediated depalmitoylation (AMD) in studies investigating the palmitoylation of cancer relevant palmitoylated proteins in healthy and diseased cells.
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Affiliation(s)
- Caroline H Knittel
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
| | - Neal K Devaraj
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093, United States
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Žarković N, Orehovec B, Baršić B, Tarle M, Kmet M, Lukšić I, Tatzber F, Wonisch W, Skrzydlewska E, Łuczaj W. Lipidomics Revealed Plasma Phospholipid Profile Differences between Deceased and Recovered COVID-19 Patients. Biomolecules 2022; 12:biom12101488. [PMID: 36291697 PMCID: PMC9599609 DOI: 10.3390/biom12101488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 01/08/2023] Open
Abstract
Thorough understanding of metabolic changes, including lipidome alteration, associated with the development of COVID-19 appears to be crucial, as new types of coronaviruses are still reported. In this study, we analyzed the differences in the plasma phospholipid profiles of the deceased COVID-19 patients, those who recovered and healthy people. Due to identified abnormalities in plasma phospholipid profiles, deceased patients were further divided into two subgroups (D1 and D2). Increased levels of phosphatidylethanolamines (PE), phosphatidylcholines (PC) and phosphatidylserines (PS) were found in the plasma of recovered patients and the majority of deceased patients (first subgroup D1) compared to the control group. However, abundances of all relevant PE, PC and PS species decreased dramatically in the plasma of the second subgroup (D2) of five deceased patients. These patients also had significantly decreased plasma COX-2 activity when compared to the control, in contrast to unchanged and increased COX-2 activity in the plasma of the other deceased patients and recovered patients, respectively. Moreover, these five deceased patients were characterized by abnormally low CRP levels and tremendous increase in LDH levels, which may be the result of other pathophysiological disorders, including disorders of the immune system, liver damage and haemolytic anemia. In addition, an observed trend to decrease the autoantibodies against oxidative modifications of low-density lipoprotein (oLAb) titer in all, especially in deceased patients, indicate systemic oxidative stress and altered immune system that may have prognostic value in COVID-19.
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Affiliation(s)
- Neven Žarković
- Ruđer Bošković Institute, Laboratory for Oxidative Stress, 10000 Zagreb, Croatia
- Correspondence:
| | | | - Bruno Baršić
- Clinical Hospital Dubrava, 10000 Zagreb, Croatia
| | - Marko Tarle
- Clinical Hospital Dubrava, 10000 Zagreb, Croatia
| | - Marta Kmet
- Clinical Hospital Dubrava, 10000 Zagreb, Croatia
| | - Ivica Lukšić
- Clinical Hospital Dubrava, 10000 Zagreb, Croatia
- Department of Pathology, University of Zagreb School of Medicine, 10000 Zagreb, Croatia
| | - Franz Tatzber
- Omnignostica Ltd., 3421 Höflein an der Donau, Austria
| | | | - Elżbieta Skrzydlewska
- Department of Analytical Chemistry, Medical University of Bialystok, A. Mickiewicza 2D, 15-222 Bialystok, Poland
| | - Wojciech Łuczaj
- Department of Analytical Chemistry, Medical University of Bialystok, A. Mickiewicza 2D, 15-222 Bialystok, Poland
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Wupperfeld D, Fricker G, Bois De Fer B, Frank L, Wehrle A, Popovic B. Essential phospholipids decrease apoptosis and increase membrane transport in human hepatocyte cell lines. Lipids Health Dis 2022; 21:91. [PMID: 36153592 PMCID: PMC9508738 DOI: 10.1186/s12944-022-01698-8] [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: 12/23/2021] [Accepted: 09/03/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Essential phospholipids (EPL) have hepatoprotective effects across many liver diseases/conditions. The impact of EPL on hepatocyte function in vitro was investigated.
Methods
Effects of noncytotoxic concentrations of EPL (0.1 and 0.25 mg/ml), and its constituents, polyenylphosphatidylcholine (PPC) and phosphatidylinositol (PI) (both at 0.1 and 1 mg/ml), on membrane fluidity, apoptosis and extracellular transport versus controls were investigated in human hepatocyte cell lines (HepG2, HepaRG, steatotic HepaRG).
Results
Significantly increased membrane fluidity occurred with all 3 phospholipids (PLs) in HepG2 cultures, and with PI (1 mg/ml) in steatotic HepaRG cells. Significantly decreased tamoxifen-induced apoptosis was observed in HepG2 cells with EPL, PPC and PI. Breast cancer resistance protein (BCRP) activity was significantly increased by EPL and PI in HepG2 cells. Multidrug resistance-associated protein 2 (MRP-2) activity was unaffected by any PL in HepG2 cells, and significantly increased by EPL, PI and PPC (1 mg/ml) in HepaRG cells, and by PI (1 mg/ml) in steatotic HepaRG cells. Bile salt export protein (BSEP) activity in HepG2 cells and steatotic HepaRG cells was significantly increased by EPL (0.25 mg/ml), and PPC (both concentrations), but not by PI. The PLs had no effects on HepaRG cell BSEP activity. P-glycoprotein (P-GP) activity was significantly increased by all compounds in HepG2 cells. PI (1 mg/ml) significantly increased P-GP activity in HepaRG and steatotic HepaRG cells.
Conclusions
EPL, PPC, and PI increased hepatocyte membrane fluidity, decreased apoptosis and increased hepatocellular export, all of which may improve liver function. These in-vitro investigations provide valuable insights into the mechanism of action of EPL.
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Abstract
AbstractThe complex composition of bacterial membranes has a significant impact on the understanding of pathogen function and their development towards antibiotic resistance. In addition to the inherent complexity and biosafety risks of studying biological pathogen membranes, the continual rise of antibiotic resistance and its significant economical and clinical consequences has motivated the development of numerous in vitro model membrane systems with tuneable compositions, geometries, and sizes. Approaches discussed in this review include liposomes, solid-supported bilayers, and computational simulations which have been used to explore various processes including drug-membrane interactions, lipid-protein interactions, host–pathogen interactions, and structure-induced bacterial pathogenesis. The advantages, limitations, and applicable analytical tools of all architectures are summarised with a perspective for future research efforts in architectural improvement and elucidation of resistance development strategies and membrane-targeting antibiotic mechanisms.
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Hilton KLF, Manwani C, Boles JE, White LJ, Ozturk S, Garrett MD, Hiscock JR. The phospholipid membrane compositions of bacterial cells, cancer cell lines and biological samples from cancer patients. Chem Sci 2021; 12:13273-13282. [PMID: 34777745 PMCID: PMC8529332 DOI: 10.1039/d1sc03597e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 09/21/2021] [Indexed: 12/24/2022] Open
Abstract
While cancer now impacts the health and well-being of more of the human population than ever before, the exponential rise in antimicrobial resistant (AMR) bacterial infections means AMR is predicted to become one of the greatest future threats to human health. It is therefore vital that novel therapeutic strategies are developed that can be used in the treatment of both cancer and AMR infections. Whether the target of a therapeutic agent be inside the cell or in the cell membrane, it must either interact with or cross this phospholipid barrier to elicit the desired cellular effect. Here we summarise findings from published research into the phospholipid membrane composition of bacterial and cancer cell lines and biological samples from cancer patients. These data not only highlight key differences in the membrane composition of these biological samples, but also the methods used to elucidate and report the results of this analogous research between the microbial and cancer fields.
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Affiliation(s)
- Kira L F Hilton
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
| | - Chandni Manwani
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
- School of Biosciences, University of Kent Canterbury Kent CT2 7NJ UK
| | - Jessica E Boles
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
| | - Lisa J White
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
| | - Sena Ozturk
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
| | | | - Jennifer R Hiscock
- School of Physical Sciences, University of Kent Canterbury Kent CT2 7NH UK
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Mernie EG, Tseng M, Wu W, Liu T, Chen Y. Nanoprobe‐based mass spectrometry and Fourier transform infrared spectroscopy for rapid phospholipid profiling. J CHIN CHEM SOC-TAIP 2021. [DOI: 10.1002/jccs.202100284] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Mei‐Chun Tseng
- Institute of Chemistry Academia Sinica Taipei Taiwan
- Department of Chemistry Soochow University Taipei Taiwan
| | - Wen‐Ti Wu
- Institute of Chemistry Academia Sinica Taipei Taiwan
| | - Tzu‐Ming Liu
- Institute of Translational Medicine Faculty of Health Sciences, University of Macau Taipa China
| | - Yu‐Ju Chen
- Institute of Chemistry Academia Sinica Taipei Taiwan
- Department of Chemistry National Taiwan University Taipei Taiwan
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Mukerjee S, Saeedan AS, Ansari MN, Singh M. Polyunsaturated Fatty Acids Mediated Regulation of Membrane Biochemistry and Tumor Cell Membrane Integrity. MEMBRANES 2021; 11:479. [PMID: 34203433 PMCID: PMC8304949 DOI: 10.3390/membranes11070479] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/05/2021] [Accepted: 06/24/2021] [Indexed: 12/25/2022]
Abstract
Particular dramatic macromolecule proteins are responsible for various cellular events in our body system. Lipids have recently recognized a lot more attention of scientists for understanding the relationship between lipid and cellular function and human health However, a biological membrane is formed with a lipid bilayer, which is called a P-L-P design. Our body system is balanced through various communicative signaling pathways derived from biological membrane proteins and lipids. In the case of any fatal disease such as cancer, the biological membrane compositions are altered. To repair the biological membrane composition and prevent cancer, dietary fatty acids, such as omega-3 polyunsaturated fatty acids, are essential in human health but are not directly synthesized in our body system. In this review, we will discuss the alteration of the biological membrane composition in breast cancer. We will highlight the role of dietary fatty acids in altering cellular composition in the P-L-P bilayer. We will also address the importance of omega-3 polyunsaturated fatty acids to regulate the membrane fluidity of cancer cells.
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Affiliation(s)
- Souvik Mukerjee
- Department of Pharmaceutical Sciences, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur 495009, Chhattisgarh, India;
| | - Abdulaziz S. Saeedan
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Mohd. Nazam Ansari
- Department of Pharmacology & Toxicology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Manjari Singh
- Department of Pharmaceutical Sciences, Assam University, Silchar 788011, Assam, India
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