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Wang L, Wang D, Lei W, Sun T, Gu B, Dong H, Taniguchi Y, Liu Y, Ling Y. Trigonometric Bundling Disulfide Unit Starship Synergizes More Effectively to Promote Cellular Uptake. Int J Mol Sci 2024; 25:7518. [PMID: 39062760 PMCID: PMC11277142 DOI: 10.3390/ijms25147518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/06/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024] Open
Abstract
A small molecule disulfide unit technology platform based on dynamic thiol exchange chemistry at the cell membrane has the potential for drug delivery. However, the alteration of the CSSC dihedral angle of the disulfide unit caused by diverse substituents directly affects the effectiveness of this technology platform as well as its own chemical stability. The highly stable open-loop relaxed type disulfide unit plays a limited role in drug delivery due to its low dihedral angle. Here, we have built a novel disulfide unit starship based on the 3,4,5-trihydroxyphenyl skeleton through trigonometric bundling. The intracellular delivery results showed that the trigonometric bundling of the disulfide unit starship effectively promoted cellular uptake without any toxicity, which is far more than 100 times more active than that of equipment with a single disulfide unit in particular. Then, the significant reduction in cell uptake capacity (73-93%) using thiol erasers proves that the trigonometric bundling of the disulfide starship is an endocytosis-independent internalization mechanism via a dynamic covalent disulfide exchange mediated by thiols on the cell surface. Furthermore, analysis of the molecular dynamics simulations demonstrated that trigonometric bundling of the disulfide starship can significantly change the membrane curvature while pushing lipid molecules in multiple directions, resulting in a significant distortion in the membrane structure and excellent membrane permeation performance. In conclusion, the starship system we built fully compensates for the inefficiency deficiencies induced by poor dihedral angles.
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Affiliation(s)
- Lei Wang
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Dezhi Wang
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Wenzhuo Lei
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Tiantian Sun
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Bei Gu
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Han Dong
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Yosuke Taniguchi
- School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan;
| | - Yichang Liu
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
| | - Yong Ling
- School of Pharmacy, Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University, Nantong 226001, China; (D.W.); (W.L.); (T.S.); (B.G.); (H.D.); (Y.L.)
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Gutierrez FV, Lima IS, De Falco A, Ereias BM, Baffa O, Diego de Abreu Lima C, Morais Sinimbu LI, de la Presa P, Luz-Lima C, Damasceno Felix Araujo JF. The effect of temperature on the synthesis of magnetite nanoparticles by the coprecipitation method. Heliyon 2024; 10:e25781. [PMID: 38390158 PMCID: PMC10881852 DOI: 10.1016/j.heliyon.2024.e25781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 02/01/2024] [Accepted: 02/01/2024] [Indexed: 02/24/2024] Open
Abstract
Magnetic nanoparticles, such as magnetite (Fe3O4), exhibit superparamagnetic properties below 15 nm at room temperature. They are being explored for medical applications, and the coprecipitation technique is preferred for cost-effective production. This study investigates the impact of synthesis temperature on the nanoparticles' physicochemical characteristics. Two types of magnetic analysis were conducted. Samples T 40, T 50, and T 60 displayed superparamagnetic behavior, as evidenced by the magnetization curves. The experiments verified the development of magnetic nanoparticles with an average diameter of approximately dozens of nanometers, as determined by various measurement methods such as XDR, Raman, and TEM. Raman spectroscopy showed the characteristic bands of the magnetite phase at 319, 364, 499, and 680 cm-1. This was confirmed in the second analysis with the ZFC-FC curves, which showed that the samples' blocking temperatures were below ambient temperature. ZFC-FC curves revealed a similar magnetization of about 30 emu/g when applying a magnetic field of 5 kOe.
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Affiliation(s)
- Frederico Vieira Gutierrez
- Physics Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de São Vicente, 22451-900, Rio de Janeiro, Brazil
| | - Iara Souza Lima
- Physics Department, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14040-91, SP, Brazil
| | - Anna De Falco
- Chemistry Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de São Vicente, 22451-900, Rio de Janeiro, Brazil
| | - Beatriz Marques Ereias
- Physics Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de São Vicente, 22451-900, Rio de Janeiro, Brazil
| | - Oswaldo Baffa
- Physics Department, FFCLRP, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto, 14040-91, SP, Brazil
| | - Caique Diego de Abreu Lima
- Physics Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de São Vicente, 22451-900, Rio de Janeiro, Brazil
| | - Lanna Isabely Morais Sinimbu
- Physics Department, Pontifical Catholic University of Rio de Janeiro, Rua Marques de São Vicente, 22451-900, Rio de Janeiro, Brazil
| | - Patricia de la Presa
- Institute of Applied Magnetism, UCM-ADIF-CSIC, A6 22,500km, 28230, Las Rozas, Spain
- Material Physics Department, UCM, Ciudad Universitaria, 28040, Madrid, Spain
| | - Cleanio Luz-Lima
- Physics Department, Federal University of Piauí, 64.049-550, Teresina, PI, Brazil
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Liu Y, Song M, Wu J, Xie S, Zhou Y, Liu L, Huang M, Jiang L, Xu P, Li J. Exploring the mechanism of photosensitizer conjugation on membrane perturbation of antimicrobial peptide: A multiscale molecular simulation study. Int J Biol Macromol 2023; 247:125698. [PMID: 37414326 DOI: 10.1016/j.ijbiomac.2023.125698] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 06/20/2023] [Accepted: 07/03/2023] [Indexed: 07/08/2023]
Abstract
Antimicrobial peptides (AMPs) exert their biological functions by perturbation with cellular membrane. Conjugation of AMPs with photosensitizer (PS) is a promising strategy for enhancing the efficacy and reducing systemic toxicity of AMPs. However, it is still elusive how the conjugated PS impacts the perturbation of AMPs on cell membrane from molecular level. Here, we addressed this issue by a multiscale computational strategy on pyropheophorbide-a (PPA) conjugated K6L9 (PPA-K6L9), a PS-AMP conjugate developed by us previously. Our atomistic molecular dynamics (MD) simulations revealed that the porphyrin moiety of PPA enhanced the stability of the conjugate in a lipid bilayer membrane model. Moreover, such moiety also maintained the amphipathic structure of K6L9, which is crucial for membrane pore formation. Coarse-grained MD simulations further showed that the conjugates aggregated in membrane environment and formed more stable toroidal pores with respect to K6L9 alone, suggesting the conjugation of PPA may enhance the membrane-disruption activity of K6L9. Consistent with this, our cellular experiments confirmed that PPA-K6L9 was more toxic to 4 T1 tumor cells than K6L9. This study provides insights into the mechanism by which PS-AMP conjugates disrupt cellular membranes and could aid in the design of more potent AMP conjugates.
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Affiliation(s)
- Yichang Liu
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China; School of Pharmacy, Nantong University, Nantong 226001, Jiangsu, China
| | - Meiru Song
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China; Henan Academy of Sciences, Zhengzhou 450046, Henan, China
| | - Juhong Wu
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China
| | - Song Xie
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China
| | - Yang Zhou
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China
| | - Lin Liu
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China
| | - Mingdong Huang
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China
| | - Lizhi Jiang
- Strait Institute of Flexible Electronics (SIFE, Future Technologies), Fujian Normal University, Fuzhou 350117, Fujian, China; Strait Laboratory of Flexible Electronics (SLoFE), Fuzhou 350117, Fujian, China.
| | - Peng Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, Fujian, China.
| | - Jinyu Li
- College of Chemistry, Fuzhou University, Fuzhou 350108, Fujian, China; Fujian Provincial Key Laboratory of Theoretical and Computational Chemistry, Xiamen 361005, Fujian, China.
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Increased photoluminescence and photodynamic therapy efficiency of hydroxyapatite-β-cyclodextrin-methylene blue@carbon powders with the favor of hydrogen bonding effect. Photochem Photobiol Sci 2021; 20:1323-1331. [PMID: 34562235 DOI: 10.1007/s43630-021-00109-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Accepted: 09/16/2021] [Indexed: 10/20/2022]
Abstract
To meet the requirements of theranostics with diagnosis and treatment, photodynamic-based therapy is simultaneously enabled with the incorporation of methylene blue (MB) as imaging agent and photosensitizer in core-shell structured drug vehicles. Citrate-modified hydroxyapatite (HAp) powders are first grafted with β-cyclodextrin (CD), then combined with MB molecules through electrostatic interactions, and finally encapsulated with carbon shells through hydro-thermal carbonization of glucose to prepare HAp-CD-MB@C powders. Processing parameters of carbonization temperature, glucose addition, reaction time and CD addition are varied to prepare drug carriers with modulated crystallite degrees and photo-physical properties. Increased crystallite sizes of HAp are accompanied with the formation of C=O, C=C and C-OH groups in carbon shell, endowing sustainable release behaviors of MB through carbonous structures. High photoluminescence intensities are fairly related with red-shifted vibration peaks of groups in tightly combined MB molecules through hydrogen bonds. This hydrogen bonding effect is significantly increased for HAp-CD-MB@C140 with the splitting of CH3-involved vibration peaks in infrared spectra, which causes increase in photoluminescence intensity and four-fold increase in generation ratio of singlet oxygen. The present studies shed light on preparation of core-shell structured drug carriers, modulation of aggregate states of MB molecules, enhancement of photo-physical properties and improvement of generation ratio of singlet oxygen during photodynamic-based therapy.
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Wei Y, Zhou YM, Li YQ, Gao RY, Fu LM, Wang P, Zhang JP, Skibsted LH. Spatial effects of photosensitization on morphology of giant unilamellar vesicles. Biophys Chem 2021; 275:106624. [PMID: 34051444 DOI: 10.1016/j.bpc.2021.106624] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 05/10/2021] [Accepted: 05/18/2021] [Indexed: 11/28/2022]
Abstract
Singlet oxygen (1O2) formed through photosensitization may initiate oxidative destruction of biomembranes, however, the influence from the spatial organization of photosensitizers (PS) relative to membranes remains unclear. To clarify this issue, we loaded riboflavin 5'-(dihydrogen phosphate) monosodium (FMN-Na) as a hydrophilic PS into the lumen of halloysite nanotubes (HNTs), and attached the nanoassemblies (FMN-Na@HNTs), via Pickering effects, to the outer surfaces of giant unilamellar vesicles (GUVs) of phospholipids. We also prepared GUVs dopped with lumiflavin (LF) as a lipophilic PS having a 1O2 quantum yield comparable to FMN-Na. FMN-Na capsulated in HNT was characterized by a longer triplet excited state lifetime (12.1 μs) compared to FMN-Na free in solution (7.5 μs), and FMN-Na in both forms efficiently generated 1O2 upon illumination. The spatio-effects of PS on the photosensitized morphological changes of membranes were studied using conventional optical microscopy by monitoring GUV morphological changes. Upon light exposure (400-440 nm), the GUVs attached with FMN-Na@HNT merely experienced membrane deformation starting from the original spherical shape, ascribed to Type II photosensitization with 1O2 as oxidant. In contrast, photooxidation of LF dopped GUVs mainly led to membrane coarsening and budding assigned to Type I photosensitization. The spatial effects of PS on photosensitized morphological changes were related to the different lipid oxidation products generated through Type I and Type II photosensitized lipid oxidation.
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Affiliation(s)
- Yuan Wei
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Yi-Ming Zhou
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Yu-Qian Li
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Rong-Yao Gao
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Li-Min Fu
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Peng Wang
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Jian-Ping Zhang
- Department of Chemistry, Renmin University of China, No.59 Zhongguancun Street, 100872 Beijing, China.
| | - Leif H Skibsted
- Department of Food Science, University of Copenhagen, Rolighedsvej 30, DK-1958 Frederiksberg C, Denmark.
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Tsubone TM, Martins WK, Franco MSF, Silva MN, Itri R, Baptista MS. Cellular compartments challenged by membrane photo-oxidation. Arch Biochem Biophys 2020; 697:108665. [PMID: 33159891 DOI: 10.1016/j.abb.2020.108665] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/20/2020] [Accepted: 10/31/2020] [Indexed: 12/18/2022]
Abstract
The lipid composition impacts directly on the structure and function of the cytoplasmic as well as organelle membranes. Depending on the type of membrane, specific lipids are required to accommodate, intercalate, or pack membrane proteins to the proper functioning of the cells/organelles. Rather than being only a physical barrier that separates the inner from the outer spaces, membranes are responsible for many biochemical events such as cell-to-cell communication, protein-lipid interaction, intracellular signaling, and energy storage. Photochemical reactions occur naturally in many biological membranes and are responsible for diverse processes such as photosynthesis and vision/phototaxis. However, excessive exposure to light in the presence of absorbing molecules produces excited states and other oxidant species that may cause cell aging/death, mutations and innumerable diseases including cancer. At the same time, targeting key compartments of diseased cells with light can be a promising strategy to treat many diseases in a clinical procedure called Photodynamic Therapy. Here we analyze the relationships between membrane alterations induced by photo-oxidation and the biochemical responses in mammalian cells. We specifically address the impact of photosensitization reactions in membranes of different organelles such as mitochondria, lysosome, endoplasmic reticulum, and plasma membrane, and the subsequent responses of eukaryotic cells.
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Affiliation(s)
| | | | - Marcia S F Franco
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, SP, Brazil
| | | | - Rosangela Itri
- Department of Applied Physics, Institute of Physics, University of São Paulo, SP, Brazil
| | - Mauricio S Baptista
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, SP, Brazil.
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de Souza RM, Ratochinski RH, Karttunen M, Dias LG. Self-Assembly of Phosphocholine Derivatives Using the ELBA Coarse-Grained Model: Micelles, Bicelles, and Reverse Micelles. J Chem Inf Model 2020; 60:522-536. [PMID: 31714768 DOI: 10.1021/acs.jcim.9b00790] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The ELBA coarse-grained force field was originally developed for lipids, and its water model is described as a single-site Lennard-Jones particle with electrostatics modeled by an embedded point-dipole, while other molecules in this force field have a three (or four)-to-one mapping scheme. Here, ELBA was applied to investigate the self-assembly processes of dodecyl-phosphocholine (DPC) micelle, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine/1,2-dihexaoyl-sn-glycero-3-phosphocholine (DPPC/DHPC) bicelles, and DPPC/cyclohexane/water reverse micelles through coarse-grained molecular dynamics (MD) simulations. New parameters were obtained using a simplex algorithm-based calibration procedure to determine the Lennard-Jones parameters for cyclohexane, dodecane, and cyclohexane-dodecane cross-interactions. Density, self-diffusion coefficient, surface tension, and mixture excess volume were found to be in fair agreement with experimental data. These new parameters were used in the simulations, and the obtained structures were analyzed for shape, size, volume, and surface area. Except for the shape of DPC micelles, all other properties match well with available experimental data and all-atom simulations. Remarkably, in agreement with experiments the rodlike shape of the DPPC reverse micelle is well described by ELBA, while all-atom data in the literature predicts a disclike shape. To further check the consistency of the force field in reproducing the correct shapes of reverse micelles, additional simulations were performed doubling the system size. Two distinct reverse micelles were obtained both presenting the rodlike shape and correct aggregation number.
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Affiliation(s)
- R M de Souza
- Department of Chemistry , The University of Western Ontario , London , Ontario , Canada N6A 3K7.,Departamento de Química, FFCLRP , Universidade de São Paulo , Avenida Bandeirantes 3900 , 14040-901 Ribeirão Preto , SP , Brazil.,The Center for Advanced Materials and Biomaterials Research , The University of Western Ontario , London , Ontario , Canada N6K 3K7
| | - R H Ratochinski
- Departamento de Química, FFCLRP , Universidade de São Paulo , Avenida Bandeirantes 3900 , 14040-901 Ribeirão Preto , SP , Brazil
| | - Mikko Karttunen
- Department of Chemistry , The University of Western Ontario , London , Ontario , Canada N6A 3K7.,The Center for Advanced Materials and Biomaterials Research , The University of Western Ontario , London , Ontario , Canada N6K 3K7.,Department of Applied Mathematics , The University of Western Ontario , London , Ontario , Canada N6A 5B7
| | - L G Dias
- Departamento de Química, FFCLRP , Universidade de São Paulo , Avenida Bandeirantes 3900 , 14040-901 Ribeirão Preto , SP , Brazil
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Tsubone TM, Baptista MS, Itri R. Understanding membrane remodelling initiated by photosensitized lipid oxidation. Biophys Chem 2019; 254:106263. [DOI: 10.1016/j.bpc.2019.106263] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 08/13/2019] [Accepted: 09/03/2019] [Indexed: 12/19/2022]
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Tsubone TM, Junqueira HC, Baptista MS, Itri R. Contrasting roles of oxidized lipids in modulating membrane microdomains. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1861:660-669. [PMID: 30605637 DOI: 10.1016/j.bbamem.2018.12.017] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 12/07/2018] [Accepted: 12/27/2018] [Indexed: 01/06/2023]
Abstract
Lipid rafts display a lateral heterogeneity forming membrane microdomains that hold a fundamental role on biological membranes and are indispensable to physiological functions of cells. Oxidative stress in cellular environments may cause lipid oxidation, changing membrane composition and organization, thus implying in effects in cell signaling and even loss of homeostasis. The individual contribution of oxidized lipid species to the formation or disruption of lipid rafts in membranes still remains unknown. Here, we investigate the role of different structures of oxidized phospholipids on rafts microdomains by carefully controlling the membrane composition. Our experimental approach based on fluorescence microscopy of giant unilamellar vesicles (GUV) enables the direct visualization of the impact of hydroperoxidized POPC lipid (referred to as POPCOOH) and shortened chain lipid PazePC (1-palmitoyl-2-azelaoyl-sn-glycero-3-phosphocholine) on phase separation. We found that the molecular structure of oxidized lipid is of paramount importance on lipid mixing and/or demixing. The hydrophobic mismatch promoted by POPCOOH coupled to its cylindrical molecular shape favor microdomains formation. In contrast, the conical shape of PazePC causes disarrangement of lipid 2D organized platforms. Our findings contribute to better unraveling how oxidized phospholipids can trigger formation or disruption of lipid rafts. As a consequence, phospholipid oxidation may indirectly affect association or dissociation of key biomolecules in the rafts thus altering cell signaling and homeostasis.
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Affiliation(s)
- Tayana Mazin Tsubone
- Department of Applied Physics, Institute of Physics, University of São Paulo, SP, Brazil
| | | | - Maurício S Baptista
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, SP, Brazil
| | - Rosangela Itri
- Department of Applied Physics, Institute of Physics, University of São Paulo, SP, Brazil.
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