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Zhu C, Liu Y, Ji X, Si Y, Tao X, Zhang X, Yin L. Enhanced Antitumor Efficacy of Cytarabine and Idarubicin in Acute Myeloid Leukemia Using Liposomal Formulation: In Vitro and In Vivo Studies. Pharmaceutics 2024; 16:1220. [PMID: 39339256 PMCID: PMC11434936 DOI: 10.3390/pharmaceutics16091220] [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: 08/14/2024] [Revised: 09/05/2024] [Accepted: 09/13/2024] [Indexed: 09/30/2024] Open
Abstract
Background: Acute myeloid leukemia (AML) is the most common type of acute leukemia among adults with the recommend therapy of combination of cytarabine and idarubicin in the induction phase. The uncoordinated pharmacokinetics prevent adequate control of drug ratio following systemic administration. Therefore, the dual-loaded liposomes containing cytarabine and idarubicin for synergistic effects were proposed and investigated. Methods: The molar ratio of cytarabine and idarubicin for synergistic effects was investigated. The dual-loaded liposomes were prepared and characterized by particle size, zeta potential, encapsulation efficiency, cryo-Transmission electron microscopy (cryo-TEM), and in vitro stability. The in vitro cytotoxicity and cell uptake of liposomes were determined within CCRF-CEM cells. The PK experiments was carried out in male SD rats. The in vivo antitumor effect was carried out within CD-1 nude female mice. The antitumor mechanism of liposomes was investigated. Results: The synergistic molar ratios were found to be in the range of 20:1~40:1. The size distribution of the dual-loaded liposomes was approximately 100 nm with PDI ≤ 0.1, a zeta potential of approximately -30 mV, an entrapment efficiency of cytarabine and idarubicin of >95% with spherical structure and uniform distribution, and in vitro stability for 21 d. The drugs in the liposomes can be quickly uptaken by the leukemia cells. The PK experiments showed that the molar ratio of cytarabine to idarubicin in plasma was maintained at 30:1 within 4 h. The efficacy of liposomes was significantly enhanced. Conclusions: The dual-loaded liposomes containing cytarabine and idarubicin showed enhanced antitumor efficacy.
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Affiliation(s)
- Chunxia Zhu
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Yang Liu
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Xiaojun Ji
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Yaxuan Si
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Xianhao Tao
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Xiaohua Zhang
- Department of Pharmaceutics, Nanjing Chia-Tai Tianqing Pharmaceutical Co., Ltd., Nanjing 210046, China
| | - Lifang Yin
- Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, China
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, Nanjing 210009, China
- State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing 210009, China
- NMPA Key Laboratory for Research and Evaluation of Pharmaceutical Preparations and Excipients, China Pharmaceutical University, Nanjing 210009, China
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2
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Kim E, Graceffa O, Broweleit R, Ladha A, Boies A, Mudakannavar SP, Rawle RJ. Lipid loss and compositional change during preparation of simple two-component liposomes. BIOPHYSICAL REPORTS 2024; 4:100174. [PMID: 39173912 PMCID: PMC11406089 DOI: 10.1016/j.bpr.2024.100174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 08/12/2024] [Accepted: 08/19/2024] [Indexed: 08/24/2024]
Abstract
Liposomes are used as model membranes in many scientific fields. Various methods exist to prepare liposomes, but common procedures include thin-film hydration followed by extrusion, freeze-thaw, and/or sonication. These procedures can produce liposomes at specific concentrations and lipid compositions, and researchers often assume that the concentration and composition of their liposomes are similar or identical to what would be expected if no lipid loss occurred. However, lipid loss and concomitant biasing of lipid composition can in principle occur at any preparation step due to nonideal mixing, lipid-surface interactions, etc. Here, we report a straightforward HPLC-ELSD method to quantify the lipid concentration and composition of liposomes and apply that method to study the preparation of simple cholesterol/POPC liposomes. We examine common liposome preparation steps, including vortexing during resuspension, lipid film hydration, extrusion, freeze-thaw, and sonication. We found that the resuspension step can play an outsized role in determining the lipid loss (up to ∼50% under seemingly rigorous procedures). The extrusion step yielded smaller lipid losses (∼10-20%). Freeze-thaw and sonication could both be employed to improve lipid yields. Hydration times up to 60 min and increasing cholesterol concentrations up to 50 mol % had little influence on lipid recovery. Fortunately, even conditions with large lipid loss did not substantially influence the target membrane composition, as long as the lipid mixture was below the cholesterol solubility limit. From our results, we identify best practices for producing maximum levels of lipid recovery and minimal changes to lipid composition during liposome preparation for cholesterol/POPC liposomes.
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Affiliation(s)
- Eunice Kim
- Department of Chemistry, Williams College, Williamstown, Massachusetts
| | - Olivia Graceffa
- Department of Chemistry, Williams College, Williamstown, Massachusetts
| | - Rachel Broweleit
- Department of Chemistry, Williams College, Williamstown, Massachusetts
| | - Ali Ladha
- Department of Chemistry, Williams College, Williamstown, Massachusetts
| | - Andrew Boies
- Department of Chemistry, Williams College, Williamstown, Massachusetts
| | | | - Robert J Rawle
- Department of Chemistry, Williams College, Williamstown, Massachusetts.
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3
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Madrigal J, Monroe DM, Sindi SS, Leiderman K. Modeling the distribution of enzymes on lipid vesicles: A novel framework for surface-mediated reactions in coagulation. Math Biosci 2024; 374:109229. [PMID: 38851530 PMCID: PMC11250983 DOI: 10.1016/j.mbs.2024.109229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 06/02/2024] [Accepted: 06/03/2024] [Indexed: 06/10/2024]
Abstract
Blood coagulation is a network of biochemical reactions wherein dozens of proteins act collectively to initiate a rapid clotting response. Coagulation reactions are lipid-surface dependent, and this dependence is thought to help localize coagulation to the site of injury and enhance the association between reactants. Current mathematical models of coagulation either do not consider lipid as a variable or do not agree with experiments where lipid concentrations were varied. Since there is no analytic rate law that depends on lipid, only apparent rate constants can be derived from enzyme kinetic experiments. We developed a new mathematical framework for modeling enzymes reactions in the presence of lipid vesicles. Here the concentrations are such that only a fraction of the vesicles harbor bound enzymes and the rest remain empty. We call the lipid vesicles with and without enzyme TF:VIIa+ and TF:VIIa- lipid, respectively. Since substrate binds to both TF:VIIa+ and TF:VIIa- lipid, our model shows that excess empty lipid acts as a strong sink for substrate. We used our framework to derive an analytic rate equation and performed constrained optimization to estimate a single, global set of intrinsic rates for the enzyme-substrate pair. Results agree with experiments and reveal a critical lipid concentration where the conversion rate of the substrate is maximized, a phenomenon known as the template effect. Next, we included product inhibition of the enzyme and derived the corresponding rate equations, which enables kinetic studies of more complex reactions. Our combined experimental and mathematical study provides a general framework for uncovering the mechanisms by which lipid mediated reactions impact coagulation processes.
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Affiliation(s)
- Jamie Madrigal
- Mathematics Department, University of North Carolina at Chapel Hill, Chapel Hill, 27599-3250, NC, USA
| | - Dougald M Monroe
- Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Suzanne S Sindi
- Mathematics Department, University of California Merced, Merced, CA, USA
| | - Karin Leiderman
- Mathematics Department, University of North Carolina at Chapel Hill, Chapel Hill, 27599-3250, NC, USA; UNC Blood Research Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA; Computational Medicine Program, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA.
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4
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Almurshedi AS, Almarshad SN, Bukhari SI, Aldosari BN, Alhabardi SA, Alkathiri FA, Saleem I, Aldosar NS, Zaki RM. A Novel Inhalable Dry Powder to Trigger Delivery of Voriconazole for Effective Management of Pulmonary Aspergillosis. Pharmaceutics 2024; 16:897. [PMID: 39065594 PMCID: PMC11280232 DOI: 10.3390/pharmaceutics16070897] [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: 05/11/2024] [Revised: 06/28/2024] [Accepted: 07/01/2024] [Indexed: 07/28/2024] Open
Abstract
Invasive pulmonary aspergillosis (IPA) is a fatal fungal infection with a high mortality rate. Voriconazole (VCZ) is considered a first-line therapy for IPA and shows efficacy in patients for whom other antifungal treatments have been unsuccessful. The objective of this study was to develop a high-potency VCZ-loaded liposomal system in the form of a dry-powder inhaler (DPI) using the spray-drying technique to convert liposomes into a nanocomposite microparticle (NCMP) DPI, formulated using a thin-film hydration technique. The physicochemical properties, including size, morphology, entrapment efficiency, and loading efficiency, of the formulated liposomes were evaluated. The NCMPs were then examined to determine their drug content, production yield, and aerodynamic size. The L3NCMP was formulated using a 1:1 lipid/L-leucine ratio and was selected for in vitro studies of cell viability, antifungal activity, and stability. These formulated inhalable particles offer a promising approach to the effective management of IPA.
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Affiliation(s)
- Alanood S. Almurshedi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Sarah N. Almarshad
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Sarah I. Bukhari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Basmah N. Aldosari
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Samiah A. Alhabardi
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Fai A. Alkathiri
- Department of Pharmaceutics, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia; (S.N.A.); (S.I.B.); (B.N.A.); (S.A.A.); (F.A.A.)
| | - Imran Saleem
- School of Pharmacy & Biomolecular Sciences, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Noura S. Aldosar
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Randa Mohammed Zaki
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia;
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Beni-Suef University, P.O. Box 62514, Beni-Suef 62514, Egypt
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Vilas Boas LCP, Buccini DF, Berlanda RLA, Santos BDPO, Maximiano MR, Lião LM, Gonçalves S, Santos NC, Franco OL. Antiviral Activities of Mastoparan-L-Derived Peptides against Human Alphaherpesvirus 1. Viruses 2024; 16:948. [PMID: 38932240 PMCID: PMC11209138 DOI: 10.3390/v16060948] [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: 03/09/2024] [Revised: 06/01/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Human alphaherpesvirus 1 (HSV-1) is a significantly widespread viral pathogen causing recurrent infections that are currently incurable despite available treatment protocols. Studies have highlighted the potential of antimicrobial peptides sourced from Vespula lewisii venom, particularly those belonging to the mastoparan family, as effective against HSV-1. This study aimed to demonstrate the antiviral properties of mastoparans, including mastoparan-L [I5, R8], mastoparan-MO, and [I5, R8] mastoparan, against HSV-1. Initially, Vero cell viability was assessed in the presence of these peptides, followed by the determination of antiviral activity, mechanism of action, and dose-response curves through plaque assays. Structural analyses via circular dichroism and nuclear magnetic resonance were conducted, along with evaluating membrane fluidity changes induced by [I5, R8] mastoparan using fluorescence-labeled lipid vesicles. Cytotoxic assays revealed high cell viability (>80%) at concentrations of 200 µg/mL for mastoparan-L and mastoparan-MO and 50 µg/mL for [I5, R8] mastoparan. Mastoparan-MO and [I5, R8] mastoparan exhibited over 80% HSV-1 inhibition, with up to 99% viral replication inhibition, particularly in the early infection stages. Structural analysis indicated an α-helical structure for [I5, R8] mastoparan, suggesting effective viral particle disruption before cell attachment. Mastoparans present promising prospects for HSV-1 infection control, although further investigation into their mechanisms is warranted.
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Affiliation(s)
- Liana Costa Pereira Vilas Boas
- Pós-Graduação em Patologia Molecular, Campus Darcy Ribeiro, Universidade de Brasília, Brasília 70910-900, DF, Brazil
- Centro de Análises Bioquímicas e Proteômicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790-760, DF, Brazil
| | - Danieli Fernanda Buccini
- Centro de Análises Bioquímicas e Proteômicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790-760, DF, Brazil
- Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, MS, Brazil
| | - Rhayfa Lorrayne Araújo Berlanda
- Pós-Graduação em Patologia Molecular, Campus Darcy Ribeiro, Universidade de Brasília, Brasília 70910-900, DF, Brazil
- Centro de Análises Bioquímicas e Proteômicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790-760, DF, Brazil
| | - Bruno de Paula Oliveira Santos
- Laboratório de Ressonância Magnética Nuclear, Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil
| | - Mariana Rocha Maximiano
- Centro de Análises Bioquímicas e Proteômicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790-760, DF, Brazil
- Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, MS, Brazil
| | - Luciano Morais Lião
- Laboratório de Ressonância Magnética Nuclear, Instituto de Química, Universidade Federal de Goiás, Goiânia 74690-900, GO, Brazil
| | - Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal (N.C.S.)
| | - Nuno C. Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal (N.C.S.)
| | - Octávio Luiz Franco
- Pós-Graduação em Patologia Molecular, Campus Darcy Ribeiro, Universidade de Brasília, Brasília 70910-900, DF, Brazil
- Centro de Análises Bioquímicas e Proteômicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília 70790-760, DF, Brazil
- Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, MS, Brazil
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6
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Kim E, Graceffa O, Broweleit R, Ladha A, Boies A, Rawle RJ. Lipid loss and compositional change during preparation of liposomes by common biophysical methods. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.30.596670. [PMID: 38854048 PMCID: PMC11160747 DOI: 10.1101/2024.05.30.596670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
Liposomes are widely used as model lipid membrane platforms in many fields, ranging from basic biophysical studies to drug delivery and biotechnology applications. Various methods exist to prepare liposomes, but common procedures include thin-film hydration followed by extrusion, freeze-thaw, and/or sonication. These procedures have the potential to produce liposomes at specific concentrations and membrane compositions, and researchers often assume that the concentration and composition of their liposomes are similar to, if not identical, to what would be expected if no lipid loss occurred during preparation. However, lipid loss and concomitant biasing of lipid composition can in principle occur at any preparation step due to nonideal mixing, lipid-surface interactions, etc. Here, we report a straightforward method using HPLC-ELSD to quantify the lipid concentration and membrane composition of liposomes, and apply that method to study the preparation of simple POPC/cholesterol liposomes. We examine many common steps in liposome formation, including vortexing during re-suspension, hydration of the lipid film, extrusion, freeze-thaw, sonication, and the percentage of cholesterol in the starting mixture. We found that the resuspension step can play an outsized role in determining the overall lipid loss (up to ~50% under seemingly rigorous procedures). The extrusion step yielded smaller lipid losses (~10-20%). Freeze-thaw and sonication could both be employed to improve lipid yields. Hydration times up to 60 minutes and increasing cholesterol concentrations up to 50 mole% had little influence on lipid recovery. Fortunately, even conditions with large lipid loss did not substantially influence the target membrane composition more than ~5% under the conditions we tested. From our results, we identify best practices for producing maximum levels of lipid recovery and minimal changes to lipid composition during liposome preparation protocols. We expect our results can be leveraged for improved preparation of model membranes by researchers in many fields.
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Affiliation(s)
- Eunice Kim
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
| | - Olivia Graceffa
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
| | - Rachel Broweleit
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
| | - Ali Ladha
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
| | - Andrew Boies
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
| | - Robert J Rawle
- Department of Chemistry, Williams College, Williamstown, MA, 01267, USA
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7
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Hu J, Pang J, Chen L, Li Y, Gan N, Pan Q, Wu D. Photoresponsive Azobenzene Nanocluster-Modified Liposomes: Mechanism Analysis Combining Experiments and Simulations. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:9761-9774. [PMID: 38663878 DOI: 10.1021/acs.langmuir.4c00787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Stimuli-responsive behaviors and controlled release in liposomes are pivotal in nanomedicine. To this end, we present an approach using a photoresponsive azobenzene nanocluster (AzDmpNC), prepared from azobenzene compounds through melting and aggregation. When integrated with liposomes, they form photoresponsive vesicles. The morphology and association with liposomes were investigated by using transmission electron microscopy. Liposomes loaded with calcein exhibited a 9.58% increased release after UV exposure. To gain insights into the underlying processes and elucidate the mechanisms involved. The molecular dynamic simulations based on the reactive force field and all-atom force field were employed to analyze the aggregation of isomers into nanoclusters and their impacts on phospholipid membranes, respectively. The results indicate that the nanoclusters primarily aggregate through π-π and T-stacking forces. The force density inside the cis-isomer of AzDmpNC formed after photoisomerization is lower, leading to its easier dispersion, rapid diffusion, and penetration into the membrane, disrupting the densification.
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Affiliation(s)
- Jie Hu
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Jingtao Pang
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Lijuan Chen
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Yilin Li
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Na Gan
- School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Qingqing Pan
- School of Preclinical Medicine, Chengdu University, Chengdu 610106, China
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8
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Yi Y, An HW, Wang H. Intelligent Biomaterialomics: Molecular Design, Manufacturing, and Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2305099. [PMID: 37490938 DOI: 10.1002/adma.202305099] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/14/2023] [Indexed: 07/27/2023]
Abstract
Materialomics integrates experiment, theory, and computation in a high-throughput manner, and has changed the paradigm for the research and development of new functional materials. Recently, with the rapid development of high-throughput characterization and machine-learning technologies, the establishment of biomaterialomics that tackles complex physiological behaviors has become accessible. Breakthroughs in the clinical translation of nanoparticle-based therapeutics and vaccines have been observed. Herein, recent advances in biomaterials, including polymers, lipid-like materials, and peptides/proteins, discovered through high-throughput screening or machine learning-assisted methods, are summarized. The molecular design of structure-diversified libraries; high-throughput characterization, screening, and preparation; and, their applications in drug delivery and clinical translation are discussed in detail. Furthermore, the prospects and main challenges in future biomaterialomics and high-throughput screening development are highlighted.
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Affiliation(s)
- Yu Yi
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
| | - Hong-Wei An
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Haidian District, Beijing, 100190, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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9
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Wang Z, Zhang J, Wang Y, Zhou J, Jiao X, Han M, Zhang X, Hu H, Su R, Zhang Y, Qi W. Overcoming Endosomal Escape Barriers in Gene Drug Delivery Using De Novo Designed pH-Responsive Peptides. ACS NANO 2024; 18:10324-10340. [PMID: 38547369 DOI: 10.1021/acsnano.4c02400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
A major challenge in using nanocarriers for intracellular drug delivery is their restricted capacity to escape from endosomes into the cytosol. Here, we significantly enhance the drug delivery efficiency by accurately predicting and regulating the transition pH (pH0) of peptides to modulate their endosomal escape capability. Moreover, by inverting the chirality of the peptide carriers, we could further enhance their ability to deliver nucleic acid drugs as well as antitumor drugs. The resulting peptide carriers exhibit versatility in transfecting various cell types with a high efficiency of up to 90% by using siRNA, pDNA, and mRNA. In vivo antitumor experiments demonstrate a tumor growth inhibition of 83.4% using the peptide. This research offers a potent method for the rapid development of peptide vectors with exceptional transfection efficiencies for diverse pathophysiological indications.
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Affiliation(s)
- Zixuan Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Jiaxing Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Yuefei Wang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, P. R. China
- Beyonpep Biotechnology Limited, Tianjin 300110, P. R. China
| | - Jialin Zhou
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xinhao Jiao
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Mingshan Han
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Xuelin Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Hailiang Hu
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
| | - Rongxin Su
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, P. R. China
| | - Yumiao Zhang
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin 300072, P. R. China
| | - Wei Qi
- State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
- Tianjin Key Laboratory of Membrane Science and Desalination Technology, Tianjin 300072, P. R. China
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Macher M, Obermeier A, Fabritz S, Kube M, Kempf H, Dietz H, Platzman I, Spatz JP. An Efficient Method for the Production of High-Purity Bioinspired Large Unilamellar Vesicles. ACS Synth Biol 2024; 13:781-791. [PMID: 38423534 PMCID: PMC10949243 DOI: 10.1021/acssynbio.3c00540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 02/13/2024] [Accepted: 02/13/2024] [Indexed: 03/02/2024]
Abstract
In order to recapitulate complex eukaryotic compartmentalization, synthetic biology aims to recreate cellular membrane-lined compartments from the bottom-up. Many important cellular organelles and cell-produced extracellular vesicles are in the size range of several hundreds of nanometers. Although attaining a fundamental characterization and mimicry of their cellular functions is a compelling goal, the lack of methods for controlled vesicle formation in this size range has hindered full understanding. Here, we show the optimization of a simple and efficient protocol for the production of large unilamellar vesicles (LUVs) with a median diameter in the range of 450-550 nm with high purity. Importantly, we rely on commercial reagents and common laboratory equipment. We thoroughly characterize the influence of different experimental parameters on the concentration and size of the resulting vesicles and assess changes in their lipid composition and surface charge. We provide guidance for researchers to optimize LUV production further to suit specific applications.
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Affiliation(s)
- Meline Macher
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
- Max
Planck School Matter to Life, Jahnstraße 29, Heidelberg 69121, Germany
- Institute
of Molecular Systems Engineering and Advanced Materials, Im Neuenheimer Feld 225, Heidelberg 69120, Germany
| | - Amelie Obermeier
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
| | - Sebastian Fabritz
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
| | - Massimo Kube
- Technical
University of Munich, Am Coulombwall 4a, Garching 85748, Germany
| | - Hannah Kempf
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
| | - Hendrik Dietz
- Max
Planck School Matter to Life, Jahnstraße 29, Heidelberg 69121, Germany
- Technical
University of Munich, Am Coulombwall 4a, Garching 85748, Germany
| | - Ilia Platzman
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
- Institute
of Molecular Systems Engineering and Advanced Materials, Im Neuenheimer Feld 225, Heidelberg 69120, Germany
| | - Joachim P. Spatz
- Max
Planck Institute for Medical Research, Jahnstraße 29, Heidelberg 69121, Germany
- Max
Planck School Matter to Life, Jahnstraße 29, Heidelberg 69121, Germany
- Institute
of Molecular Systems Engineering and Advanced Materials, Im Neuenheimer Feld 225, Heidelberg 69120, Germany
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11
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Pabisz P, Bazak J, Sabat M, Girotti AW, Korytowski W. Cholesterol Hydroperoxide Co-trafficking in Testosterone-generating Leydig Cells: GPx4 Inhibition of Cytotoxic and Anti-steroidogenic Effects. Cell Biochem Biophys 2024; 82:213-222. [PMID: 37995086 PMCID: PMC10866752 DOI: 10.1007/s12013-023-01194-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 10/27/2023] [Indexed: 11/24/2023]
Abstract
Trafficking of intracellular cholesterol (Ch) to and into mitochondria of steroidogenic cells is required for steroid hormone biosynthesis. This trafficking is typically mediated by one or more proteins of the steroidogenic acute regulatory (StAR) family. Our previous studies revealed that 7-OOH, a redox-active cholesterol hydroperoxide, could be co-trafficked with Ch to/into mitochondria of MA-10 Leydig cells, thereby inducing membrane lipid peroxidation (LPO) which impaired progesterone biosynthesis. These negative effects of 7-OOH were inhibited by endogenous selenoperoxidase GPx4, indicating that this enzyme could protect against 7-OOH-induced oxidative damage/dysfunction. In the present study, we advanced our Leydig focus to cultured murine TM3 cells and then to primary cells from rat testis, both of which produce testosterone. Using a fluorescent probe, we found that extensive free radical-mediated LPO occurred in mitochondria of stimulated primary Leydig cells during treatment with liposomal Ch+7-OOH, resulting in a significant decline in testosterone output relative to that with Ch alone. Strong enhancement of LPO and testosterone shortfall by RSL3 (a GPx4 inhibitor) and reversal thereof by Ebselen (a GPx4 mimetic), suggested that endogenous GPx4 was playing a key antioxidant role. 7-OOH in increasing doses was also cytotoxic to these cells, RSL3 exacerbating this in Ebselen-reversable fashion. Moreover, GPx4 knockdown increased cell sensitivity to LPO with reduced testosterone output. These findings, particularly with primary Leydigs (which best represent cells in intact testis) suggest that GPx4 plays a key protective role against peroxidative damage/dysfunction induced by 7-OOH co-trafficking with Ch.
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Affiliation(s)
- Pawel Pabisz
- Department of Biophysics, Jagiellonian University, Krakow, Poland
| | - Jerzy Bazak
- Department of Biophysics, Jagiellonian University, Krakow, Poland
| | - Michal Sabat
- Department of Biophysics, Jagiellonian University, Krakow, Poland
| | - Albert W Girotti
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
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12
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Ballesteros U, Iriondo MN, Varela YR, Goñi FM, Alonso A, Montes LR, Etxaniz A. The N-terminal region of the ATG8 autophagy protein LC3C is essential for its membrane fusion properties. Int J Biol Macromol 2024; 262:129835. [PMID: 38302024 DOI: 10.1016/j.ijbiomac.2024.129835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/25/2024] [Accepted: 01/27/2024] [Indexed: 02/03/2024]
Abstract
Autophagy is a catabolic process in which a double-membrane organelle, the autophagosome (AP), engulfs cellular components that will be degraded in the lysosomes. ATG8 protein family members participate at various stages of AP formation. The present study compares the capacity to induce lipid-vesicle tethering and fusion of two ATG8 family members, LC3B and LC3C, with model membranes. LC3B is the most thoroughly studied ATG8 protein. It is generally considered as an autophagosomal marker and a canonical representative of the LC3 subfamily. LC3C is less studied, but recent data have reported its implication in various processes, crucial to cellular homeostasis. The results in this paper show that LC3C induces higher levels of tethering and of intervesicular lipid mixing than LC3B. As the N-terminus of LC3C is different from that of the other family members, various mutants of the N-terminal region of both LC3B and LC3C were designed, and their activities compared. It was concluded that the N-terminal region of LC3C was responsible for the enhanced vesicle tethering, membrane perturbation and vesicle-vesicle fusion activities of LC3C as compared to LC3B. The results suggest a specialized function of LC3C in the AP expansion process.
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Affiliation(s)
- Uxue Ballesteros
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - Marina N Iriondo
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - Yaiza R Varela
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - Félix M Goñi
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - Alicia Alonso
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain
| | - L Ruth Montes
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain.
| | - Asier Etxaniz
- Department of Biochemistry and Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain.
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13
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Ghosal K, Pani A, Chowdhury T, Kundu A, Thomas S. Multi-vesicular Liposome and its Applications: A Novel Chemically Modified Approach for Drug Delivery Application. Mini Rev Med Chem 2024; 24:26-38. [PMID: 37312447 DOI: 10.2174/1389557523666230613162512] [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: 11/13/2022] [Revised: 01/16/2023] [Accepted: 02/08/2023] [Indexed: 06/15/2023]
Abstract
BACKGROUND This study aimed to elaborate on all the aspects of multivesicular liposomes, including structure, function, topology, etc. Liposomes are a unique drug delivery system, in which both hydrophilic and hydrophobic drug molecules can be incorporated. Particularly, multivesicular liposomes have more advantages than other liposomes because of their unique structure. This study provides an overview of several works already performed by various researchers in this field. Numerous studies have reported on preparing and evaluating multivesicular liposomes for drug delivery applications. This study summarizes the process of formulating multivesicular liposomes and their application in drug delivery systems and provides details about how to resolve the problem of limited solubility and stability of biomolecules, along with controlled drug release kinetics, with the possibility of loading various drugs. There is no doubt that multivesicular liposome opens new avenues to develop novel drug delivery system for achieving the desired functional performances and expanding the applications in the drug delivery area.
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Affiliation(s)
- Kajal Ghosal
- Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032, India
| | - Ayan Pani
- Department of Pharmaceutics, Haldia Institute of Pharmacy, Hatiberia, Haldia, Purba Medinipur, West Bengal, 721657, India
| | - Totan Chowdhury
- Dr. B.C. Roy College of Pharmacy and AHS, Durgapur, 713206, India
| | - Abhijeet Kundu
- Dr. B.C. Roy College of Pharmacy and AHS, Durgapur, 713206, India
| | - Sabu Thomas
- Department of Chemical Science, International and Inter University Center for Nanoscience and Nanotechnology (IIUCNN), Mahatma Gandhi University, Priyadarshini Hill, Kottayam, 686560, Kerala, India
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14
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Naghib SM, Mohammad-Jafari K. Microfluidics-mediated Liposomal Nanoparticles for Cancer Therapy: Recent Developments on Advanced Devices and Technologies. Curr Top Med Chem 2024; 24:1185-1211. [PMID: 38424436 DOI: 10.2174/0115680266286460240220073334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 03/02/2024]
Abstract
Liposomes, spherical particles with phospholipid double layers, have been extensively studied over the years as a means of drug administration. Conventional manufacturing techniques like thin-film hydration and extrusion have limitations in controlling liposome size and distribution. Microfluidics enables superior tuning of parameters during the self-assembly of liposomes, producing uniform populations. This review summarizes microfluidic methods for engineering liposomes, including hydrodynamic flow focusing, jetting, micro mixing, and double emulsions. The precise control over size and lamellarity afforded by microfluidics has advantages for cancer therapy. Liposomes created through microfluidics and designed to encapsulate chemotherapy drugs have exhibited several advantageous properties in cancer treatment. They showcase enhanced permeability and retention effects, allowing them to accumulate specifically in tumor tissues passively. This passive targeting of tumors results in improved drug delivery and efficacy while reducing systemic toxicity. Promising results have been observed in pancreatic, lung, breast, and ovarian cancer models, making them a potential breakthrough in cancer therapy. Surface-modified liposomes, like antibodies or carbohydrates, also achieve active targeting. Overall, microfluidic fabrication improves reproducibility and scalability compared to traditional methods while maintaining drug loading and biological efficacy. Microfluidics-engineered liposomal formulations hold significant potential to overcome challenges in nanomedicine-based cancer treatment.
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Affiliation(s)
- Seyed Morteza Naghib
- Department of Nanotechnology, School of Advanced Technologies, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
| | - Kave Mohammad-Jafari
- Department of Nanotechnology, School of Advanced Technologies, Iran University of Science and Technology, P.O. Box 16846-13114, Tehran, Iran
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15
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Prevete G, Simonis B, Mazzonna M, Mariani F, Donati E, Sennato S, Ceccacci F, Bombelli C. Resveratrol and Resveratrol-Loaded Galactosylated Liposomes: Anti-Adherence and Cell Wall Damage Effects on Staphylococcus aureus and MRSA. Biomolecules 2023; 13:1794. [PMID: 38136664 PMCID: PMC10741626 DOI: 10.3390/biom13121794] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Antibiotic resistance due to bacterial biofilm formation is a major global health concern that makes the search for new therapeutic approaches an urgent need. In this context,, trans-resveratrol (RSV), a polyphenolic natural substance, seems to be a good candidate for preventing and eradicating biofilm-associated infections but its mechanism of action is poorly understood. In addition, RSV suffers from low bioavailability and chemical instability in the biological media that make its encapsulation in delivery systems necessary. In this work, the anti-biofilm activity of free RSV was investigated on Staphylococcus aureus and, to highlight the possible mechanism of action, we studied the anti-adherence activity and also the cell wall damage on a MRSA strain. Free RSV activity was compared to that of RSV loaded in liposomes, specifically neutral liposomes (L = DOPC/Cholesterol) and cationic liposomes (LG = DOPC/Chol/GLT1) characterized by a galactosylated amphiphile (GLT1) that promotes the interaction with bacteria. The results indicate that RSV loaded in LG has anti-adherence and anti-biofilm activity higher than free RSV. On the other side, free RSV has a higher bacterial-growth-inhibiting effect than encapsulated RSV and it can damage cell walls by creating pores; however, this effect can not prevent bacteria from growing again. This RSV ability may underlie its bacteriostatic activity.
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Affiliation(s)
- Giuliana Prevete
- Department of Chemistry and Technology of Drug, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy;
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Area della Ricerca di Roma 1, Via Salaria Km 29,300, 00015 Monterotondo, Italy;
| | - Beatrice Simonis
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Secondary Office of Rome-Reaction Mechanisms c/o Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy (F.C.); (C.B.)
| | - Marco Mazzonna
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Area della Ricerca di Roma 1, Via Salaria Km 29,300, 00015 Monterotondo, Italy;
| | - Francesca Mariani
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Area della Ricerca di Roma 1, Via Salaria Km 29,300, 00015 Monterotondo, Italy;
| | - Enrica Donati
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Area della Ricerca di Roma 1, Via Salaria Km 29,300, 00015 Monterotondo, Italy;
| | - Simona Sennato
- Institute for Complex Systems of the Italian National Research Council (ISC-CNR), Sede Sapienza c/o Physics Department, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy;
| | - Francesca Ceccacci
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Secondary Office of Rome-Reaction Mechanisms c/o Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy (F.C.); (C.B.)
| | - Cecilia Bombelli
- Institute for Biological Systems of Italian National Research Council (ISB-CNR), Secondary Office of Rome-Reaction Mechanisms c/o Department of Chemistry, Sapienza University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy (F.C.); (C.B.)
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16
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Giordani S, Marassi V, Zattoni A, Roda B, Reschiglian P. Liposomes characterization for market approval as pharmaceutical products: Analytical methods, guidelines and standardized protocols. J Pharm Biomed Anal 2023; 236:115751. [PMID: 37778202 DOI: 10.1016/j.jpba.2023.115751] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/13/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
Liposomes are nano-sized lipid-based vesicles widely studied for their drug delivery capabilities. Compared to standard carries they exhibit better properties such as improved site-targeting and drug release, protection of drugs from degradation and clearance, and lower toxic side effects. At present, scientific literature is rich of studies regarding liposomes-based systems, while 14 types of liposomal products have been authorized to the market by EMA and FDA and many others have been approved by national agencies. Although the interest in nanodevices and nanomedicine has steadily increased in the last two decades the development of documentation regulating and standardizing all the phases of their development and quality control still suffers from major inadequacy due to the intrinsic complexity of nano-systems characterization. Many generic documents (Type 1) discussing guidelines for the study of nano-systems (lipidic and not) have been proposed while there is a lack of robust and standardized methods (Type 2 documents). As a result, a widespread of different techniques, approaches and methodologies are being used, generating results of variable quality and hard to compare with each other. Additionally, such documents are often subject to updates and rewriting further complicating the topic. Within this context the aim of this work is focused on bridging the gap in liposome characterization: the most recent standardized methodologies suitable for liposomes characterization are here reported (with the corresponding Type 2 documents) and revised in a short and pragmatical way focused on providing the reader with a practical background of the state of the art. In particular, this paper will put the accent on the methodologies developed to evaluate the main critical quality attributes (CQAs) necessary for liposomes market approval.
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Affiliation(s)
- Stefano Giordani
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Valentina Marassi
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy.
| | - Andrea Zattoni
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy
| | - Barbara Roda
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy.
| | - Pierluigi Reschiglian
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy
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17
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Ballesteros U, González-Ramirez EJ, de la Arada I, Sot J, Etxaniz A, Goñi FM, Alonso A, Montes LR. Effects of a N-Maleimide-derivatized Phosphatidylethanolamine on the Architecture and Properties of Lipid Bilayers. Int J Mol Sci 2023; 24:16570. [PMID: 38068893 PMCID: PMC10706405 DOI: 10.3390/ijms242316570] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/15/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023] Open
Abstract
N-maleimide-derivatized phospholipids are often used to facilitate protein anchoring to membranes. In autophagy studies, this is applied to the covalent binding of Atg8, an autophagy protein, to a phosphatidylethanolamine (PE) in the nascent autophagosome. However, the question remains on how closely the N-maleimide PE derivative (PE-mal) mimicks the native PE in the bilayer. In the present paper, spectroscopic and calorimetric techniques have been applied to vesicles containing either PE or PE-mal (together with other phospholipids) to compare the properties of the native and derivatized forms of PE. According to differential scanning calorimetry, and to infrared spectroscopy, the presence of PE-mal did not perturb the fatty acyl chains in the bilayer. Fluorescence spectroscopy and microscopy showed that PE-mal did not alter the bilayer permeability either. However, fluorescence emission polarization of the Laurdan and DPH probes indicated an increased order, or decreased fluidity, in the bilayers containing PE-mal. In addition, the infrared spectral data from the phospholipid phosphate region revealed a PE-mal-induced conformational change in the polar heads, accompanied by increased hydration. Globally considered, the results suggest that PE-mal would be a reasonable substitute for PE in model membranes containing reconstituted proteins.
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Affiliation(s)
| | | | | | | | | | - Félix M. Goñi
- Department of Biochemistry, Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain; (U.B.); (E.J.G.-R.); (I.d.l.A.); (J.S.); (A.E.); (A.A.); (L.R.M.)
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18
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Sun H, Qi H, Hu W, Guan L, Xue J, Ai Y, Wang Y, Ding M, Liang Q. Single Nanovesicles Tracking Reveals Their Heterogeneous Extracellular Adsorptions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301888. [PMID: 37467296 DOI: 10.1002/smll.202301888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 06/07/2023] [Indexed: 07/21/2023]
Abstract
The vigorous nanomedicine offers significant possibilities for effective therapeutics of various diseases, and nanovesicles (NVs) represented by artificial liposomes and natural exosomes and cytomembranes especially show great potential. However, their complex interactions with cells, particularly the heterogeneous extracellular adsorptions, are difficult to analyze spatiotemporally due to the transient dynamics. In this study, by single NVs tracking, the extracellular NVs adsorptions are directly observed and their heterogeneous characteristics are revealed. Briefly, plenty of NVs adsorbed on HCT116 cells are tracked and classified, and it is discovered that they exhibit various diffusion properties from different extracellular regions: stable adsorptions on the rear surface and restricted adsorptions on the front protrusion. After the hydrolysis of hyaluronic acid in the extracellular matrix by hyaluronidase, the restricted adsorptions are further weakened and manifested as dissociative adsorptions, which demonstrated reduced total NVs adsorptions from a single-cell and single-particle perspective. Compared with traditional static analysis, the spatiotemporal tracking and heterogeneous results not only reveal the extracellular NVs-cell interactions but also inspire a wide variety of nanomedicine and their nano-investigations.
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Affiliation(s)
- Hua Sun
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Huibo Qi
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Wanting Hu
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Liandi Guan
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Jianfeng Xue
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yongjian Ai
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Yu Wang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Mingyu Ding
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
| | - Qionglin Liang
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Laboratory of Flexible Electronics Technology, Center for Synthetic and Systems Biology, Department of Chemistry, Tsinghua University, Beijing, 100084, China
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19
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Koehler JK, Schmager S, Bender V, Steiner D, Massing U. Preparation of Nanosized Pharmaceutical Formulations by Dual Centrifugation. Pharmaceuticals (Basel) 2023; 16:1519. [PMID: 38004385 PMCID: PMC10675754 DOI: 10.3390/ph16111519] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 11/26/2023] Open
Abstract
Dual centrifugation (DC) is an innovative in-vial homogenization and in-vial nanomilling technique that has been in use for the preparation of liposomes for more than one decade. Since then, DC has continuously been developed for preparing various liposomes and other lipid nanoparticles including emulsions and solid lipid nanoparticles (SLNs) as well as polymersomes and nanocrystals. Improvements in equipment technology have been achieved over the past decade, so that DC is now on its way to becoming the quasi-standard for the simple, fast, and aseptic production of lipid nanoparticles and nanocrystals in small and medium batch sizes, including the possibility of simple and fast formulation screening or bedside preparations of therapeutic nanoparticles. More than 68 publications in which DC was used to produce nanoparticles have appeared since then, justifying an initial review of the use of DC for pharmaceutical nanotechnology.
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Affiliation(s)
- Jonas K. Koehler
- Institute of Pharmaceutical Sciences, University of Freiburg, 79104 Freiburg im Breisgau, Germany; (J.K.K.); (S.S.); (V.B.)
| | - Stefanie Schmager
- Institute of Pharmaceutical Sciences, University of Freiburg, 79104 Freiburg im Breisgau, Germany; (J.K.K.); (S.S.); (V.B.)
| | - Valentin Bender
- Institute of Pharmaceutical Sciences, University of Freiburg, 79104 Freiburg im Breisgau, Germany; (J.K.K.); (S.S.); (V.B.)
| | - Denise Steiner
- Department of Pharmaceutical Technology, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
- Institute of Pharmaceutical Technology and Biopharmacy, University of Münster, Corrensstraße 48, 48149 Münster, Germany
| | - Ulrich Massing
- Institute of Pharmaceutical Sciences, University of Freiburg, 79104 Freiburg im Breisgau, Germany; (J.K.K.); (S.S.); (V.B.)
- Andreas Hettich GmbH & Co. KG, 78532 Tuttlingen, Germany
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20
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Suchi SA, Lee DY, Kim YK, Kang SS, Bilkis T, Yoo JC. Synergistic Effect, Improved Cell Selectivity, and Elucidating the Action Mechanism of Antimicrobial Peptide YS12. Int J Mol Sci 2023; 24:13522. [PMID: 37686328 PMCID: PMC10487915 DOI: 10.3390/ijms241713522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 08/15/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Antimicrobial peptides (AMPs) have attracted considerable attention as potential substitutes for traditional antibiotics. In our previous research, a novel antimicrobial peptide YS12 derived from the Bacillus velezensis strain showed broad-spectrum antimicrobial activity against Gram-positive and Gram-negative bacteria. In this study, the fractional inhibitory concentration index (FICI) indicated that combining YS12 with commercial antibiotics produced a synergistic effect. Following these findings, the combination of YS12 with an antibiotic resulted in a faster killing effect against bacterial strains compared to the treatment with the peptide YS12 or antibiotic alone. The peptide YS12 maintained its antimicrobial activity under different physiological salts (Na+, Mg2+, and Fe3+). Most importantly, YS12 exhibited no cytotoxicity towards Raw 264.7 cells and showed low hemolytic activity, whereas positive control melittin indicated extremely high toxicity. In terms of mode of action, we found that peptide YS12 was able to bind with LPS through electrostatic interaction. The results from fluorescent measurement revealed that peptide YS12 damaged the integrity of the bacterial membrane. Confocal laser microscopy further confirmed that the localization of peptide YS12 was almost in the cytoplasm of the cells. Peptide YS12 also exhibited anti-inflammatory activity by reducing the release of LPS-induced pro-inflammatory mediators such as TNF-α, IL-1β, and NO. Collectively, these properties strongly suggest that the antimicrobial peptide YS12 may be a promising candidate for treating microbial infections and inflammation.
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Affiliation(s)
- Suzia Aktar Suchi
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea
| | - Dae Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA, Eumseong 27709, Republic of Korea
| | - Young Kyun Kim
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea
| | - Seong Soo Kang
- Department of Veterinary Medicine and BK21 Four Program, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Tahmina Bilkis
- Department of Biomedical Sciences, Chosun University, Gwangju 61452, Republic of Korea
| | - Jin Cheol Yoo
- Department of Pharmacy, College of Pharmacy, Chosun University, Gwangju 61452, Republic of Korea
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21
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Rodnin MV, Vasques-Montes V, Kyrychenko A, Oliveira NFB, Kashipathy MM, Battaile KP, Douglas J, Lovell S, Machuqueiro M, Ladokhin AS. Histidine Protonation and Conformational Switching in Diphtheria Toxin Translocation Domain. Toxins (Basel) 2023; 15:410. [PMID: 37505680 PMCID: PMC10467104 DOI: 10.3390/toxins15070410] [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: 05/10/2023] [Revised: 06/06/2023] [Accepted: 06/21/2023] [Indexed: 07/29/2023] Open
Abstract
Protonation of key histidine residues has been long implicated in the acid-mediated cellular action of the diphtheria toxin translocation (T-) domain, responsible for the delivery of the catalytic domain into the cell. Here, we use a combination of computational (constant-pH Molecular Dynamics simulations) and experimental (NMR, circular dichroism, and fluorescence spectroscopy along with the X-ray crystallography) approaches to characterize the initial stages of conformational change happening in solution in the wild-type T-domain and in the H223Q/H257Q double mutant. This replacement suppresses the acid-induced transition, resulting in the retention of a more stable protein structure in solutions at pH 5.5 and, consequently, in reduced membrane-disrupting activity. Here, for the first time, we report the pKa values of the histidine residues of the T-domain, measured by NMR-monitored pH titrations. Most peaks in the histidine side chain spectral region are titrated with pKas ranging from 6.2 to 6.8. However, the two most up-field peaks display little change down to pH 6, which is a limiting pH for this protein in solution at concentrations required for NMR. These peaks are absent in the double mutant, suggesting they belong to H223 and H257. The constant-pH simulations indicate that for the T-domain in solution, the pKa values for histidine residues range from 3.0 to 6.5, with those most difficult to protonate being H251 and H257. Taken together, our experimental and computational data demonstrate that previously suggested cooperative protonation of all six histidines in the T-domain does not occur.
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Affiliation(s)
- Mykola V. Rodnin
- Department of Biochemistry and Molecular Biology, University of Kansas School of Medicine, Kansas City, KS 66160, USA (A.K.)
| | - Victor Vasques-Montes
- Department of Biochemistry and Molecular Biology, University of Kansas School of Medicine, Kansas City, KS 66160, USA (A.K.)
| | - Alexander Kyrychenko
- Department of Biochemistry and Molecular Biology, University of Kansas School of Medicine, Kansas City, KS 66160, USA (A.K.)
- Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National University, 61022 Kharkiv, Ukraine
| | - Nuno F. B. Oliveira
- Institute of Biosystems and Integrative Sciences, University of Lisbon, 1749-016 Lisbon, Portugal (M.M.)
| | - Maithri M. Kashipathy
- Protein Structure and X-ray Crystallography Laboratory, University of Kansas, Lawrence, KS 66047, USA (S.L.)
| | | | - Justin Douglas
- COBRE Bio-NMR Laboratory, University of Kansas, Lawrence, KS 66045, USA;
| | - Scott Lovell
- Protein Structure and X-ray Crystallography Laboratory, University of Kansas, Lawrence, KS 66047, USA (S.L.)
| | - Miguel Machuqueiro
- Institute of Biosystems and Integrative Sciences, University of Lisbon, 1749-016 Lisbon, Portugal (M.M.)
| | - Alexey S. Ladokhin
- Department of Biochemistry and Molecular Biology, University of Kansas School of Medicine, Kansas City, KS 66160, USA (A.K.)
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22
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Salas Sanzana D, Flores Faúndez E, Meléndez J, Soto-Arriaza M. Increased delivery and cytotoxicity of doxorubicin in HeLa cells using the synthetic cationic peptide pEM-2 functionalized liposomes. Colloids Surf B Biointerfaces 2023; 228:113420. [PMID: 37379702 DOI: 10.1016/j.colsurfb.2023.113420] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 05/22/2023] [Accepted: 06/17/2023] [Indexed: 06/30/2023]
Abstract
HYPOTHESIS Due to the inability of nano-carriers to passively cross the cell membrane, cell penetration enhancers are used to accelerate cytoplasmic delivery of antineoplastic drugs. In this regard, snake venom phospholipase A2 peptides are known for their ability to destabilize natural and artificial membranes. In this context, functionalized liposomes with peptide pEM-2 should favor the incorporation of doxorubicin and increase its cytotoxicity in HeLa cells compared to free doxorubicin, and doxorubicin encapsulated in non-functionalized liposomes. EXPERIMENTS Several characteristics were monitored, including doxorubicin loading capacity of the liposomes, as well as the release and uptake before and after functionalization. Cell viability and half-maximal inhibition concentrations were determined in HeLa cells. FINDINGS In vitro studies showed that functionalization of doxorubicin-loaded PC-NG liposomes with pEM-2 not only improved the amount of doxorubicin delivered compared to free doxorubicin or other doxorubicin-containing formulations, but also showed enhanced cytotoxicity against HeLa cells. The PC-NG liposomes loaded with doxorubicin improved treatment efficacy by reducing the IC50 value and incubation time. This increase in cell toxicity was directly related to the concentration of pEM-2 peptide bound to the liposomes. We conclude that the cytotoxicity observed in HeLa cells due to the action of doxorubicin was strongly favored when encapsulated in synthetic liposomes and functionalized with the pEM-2 peptide.
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Affiliation(s)
- Diego Salas Sanzana
- Escuela de Química, Facultad de Química y de Farmacia, Pontificia Universidad Católica, Santiago, Chile.
| | - Emilia Flores Faúndez
- Centro de Biología Celular y Biomedicina CEBICEM, Universidad San Sebastián, Santiago, Chile.
| | - Jaime Meléndez
- Reproductive Health Research Institute (RHRI), Santiago, Chile.
| | - Marco Soto-Arriaza
- Escuela de Química y Farmacia, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago, Chile.
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23
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Wen P, Ke W, Dirisala A, Toh K, Tanaka M, Li J. Stealth and pseudo-stealth nanocarriers. Adv Drug Deliv Rev 2023; 198:114895. [PMID: 37211278 DOI: 10.1016/j.addr.2023.114895] [Citation(s) in RCA: 51] [Impact Index Per Article: 51.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/10/2023] [Accepted: 05/15/2023] [Indexed: 05/23/2023]
Abstract
The stealth effect plays a central role on capacitating nanomaterials for drug delivery applications through improving the pharmacokinetics such as blood circulation, biodistribution, and tissue targeting. Here based on a practical analysis of stealth efficiency and a theoretical discussion of relevant factors, we provide an integrated material and biological perspective in terms of engineering stealth nanomaterials. The analysis surprisingly shows that more than 85% of the reported stealth nanomaterials encounter a rapid drop of blood concentration to half of the administered dose within 1 h post administration although a relatively long β-phase is observed. A term, pseudo-stealth effect, is used to delineate this common pharmacokinetics behavior of nanomaterials, that is, dose-dependent nonlinear pharmacokinetics because of saturating or depressing bio-clearance of RES. We further propose structural holism can be a watershed to improve the stealth effect; that is, the whole surface structure and geometry play important roles, rather than solely relying on a single factor such as maximizing repulsion force through polymer-based steric stabilization (e.g., PEGylation) or inhibiting immune attack through a bio-inspired component. Consequently, engineering delicate structural hierarchies to minimize attractive binding sites, that is, minimal charges/dipole and hydrophobic domain, becomes crucial. In parallel, the pragmatic implementation of the pseudo-stealth effect and dynamic modulation of the stealth effect are discussed for future development.
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Affiliation(s)
- Panyue Wen
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Wendong Ke
- Chemical Macromolecule Division, Asymchem Life Science (Tianjin) Co., Ltd. No. 71, Seventh Avenue, TEDA Tianjin 300457, P.R. China
| | - Anjaneyulu Dirisala
- Innovation Center of Nanomedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| | - Kazuko Toh
- Innovation Center of Nanomedicine, Kawasaki Institute of Industrial Promotion, 3-25-14, Tonomachi, Kawasaki-ku, Kawasaki 210-0821, Japan
| | - Masaru Tanaka
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Junjie Li
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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24
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Kasagi N, Doi I, Nakabayashi J, Saito K, Tadakuma A, Muraki N, Hori R, Kimura T, Okada K, Yamada N, Makita-Suzuki K, Tanisaka H, Shimoyama S, Mori M. Optimization of dihydrosphingomyelin/cholesterol mol ratio in topotecan-loaded liposomes to enhance drug retention and plasma half-life by understanding physicochemical and thermodynamic properties of the lipid membrane. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2023.135333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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25
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Büber E, Schröder T, Scheckenbach M, Dass M, Franquelim HG, Tinnefeld P. DNA Origami Curvature Sensors for Nanoparticle and Vesicle Size Determination with Single-Molecule FRET Readout. ACS NANO 2023; 17:3088-3097. [PMID: 36735241 DOI: 10.1021/acsnano.2c11981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Particle size is an important characteristic of materials with a direct effect on their physicochemical features. Besides nanoparticles, particle size and surface curvature are particularly important in the world of lipids and cellular membranes as the cell membrane undergoes conformational changes in many biological processes which leads to diverging local curvature values. On account of that, it is important to develop cost-effective, rapid and sufficiently precise systems that can measure the surface curvature on the nanoscale that can be translated to size for spherical particles. As an alternative approach for particle characterization, we present flexible DNA nanodevices that can adapt to the curvature of the structure they are bound to. The curvature sensors use Fluorescence Resonance Energy Transfer (FRET) as the transduction mechanism on the single-molecule level. The curvature sensors consist of segmented DNA origami structures connected via flexible DNA linkers incorporating a FRET pair. The activity of the sensors was first demonstrated with defined binding to different DNA origami geometries used as templates. Then the DNA origami curvature sensors were applied to measure spherical silica beads having different size, and subsequently on lipid vesicles. With the designed sensors, we could reliably distinguish different sized nanoparticles within a size range of 50-300 nm as well as the bending angle range of 50-180°. This study helps with the development of more advanced modular-curvature sensing devices that are capable of determining the sizes of nanoparticles and biological complexes.
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Affiliation(s)
- Ece Büber
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Tim Schröder
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Michael Scheckenbach
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
| | - Mihir Dass
- Faculty of Physics and Center for NanoScience, Ludwig-Maximilians-University, 80539Munich, Germany
| | - Henri G Franquelim
- Max Planck Institute of Biochemistry, Am Klopferspitz 18, 82152Martinsried, Germany
- Interfaculty Centre for Bioactive Matter, Leipzig University, c/o Deutscher Platz 5 (BBZ), 04109Leipzig, Germany
| | - Philip Tinnefeld
- Department of Chemistry and Center for NanoScience, Ludwig-Maximilians-University, Butenandtstraße 5-13, 81377Munich, Germany
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26
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Iriondo MN, Etxaniz A, Varela YR, Ballesteros U, Lázaro M, Valle M, Fracchiolla D, Martens S, Montes LR, Goñi FM, Alonso A. Effect of ATG12-ATG5-ATG16L1 autophagy E3-like complex on the ability of LC3/GABARAP proteins to induce vesicle tethering and fusion. Cell Mol Life Sci 2023; 80:56. [PMID: 36729310 PMCID: PMC9894987 DOI: 10.1007/s00018-023-04704-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 02/03/2023]
Abstract
In macroautophagy, the autophagosome (AP) engulfs portions of cytoplasm to allow their lysosomal degradation. AP formation in humans requires the concerted action of the ATG12 and LC3/GABARAP conjugation systems. The ATG12-ATG5-ATG16L1 or E3-like complex (E3 for short) acts as a ubiquitin-like E3 enzyme, promoting LC3/GABARAP proteins anchoring to the AP membrane. Their role in the AP expansion process is still unclear, in part because there are no studies comparing six LC3/GABARAP family member roles under the same conditions, and also because the full human E3 was only recently available. In the present study, the lipidation of six members of the LC3/GABARAP family has been reconstituted in the presence and absence of E3, and the mechanisms by which E3 and LC3/GABARAP proteins participate in vesicle tethering and fusion have been investigated. In the absence of E3, GABARAP and GABARAPL1 showed the highest activities. Differences found within LC3/GABARAP proteins suggest the existence of a lipidation threshold, lower for the GABARAP subfamily, as a requisite for tethering and inter-vesicular lipid mixing. E3 increases and speeds up lipidation and LC3/GABARAP-promoted tethering. However, E3 hampers LC3/GABARAP capacity to induce inter-vesicular lipid mixing or subsequent fusion, presumably through the formation of a rigid scaffold on the vesicle surface. Our results suggest a model of AP expansion in which the growing regions would be areas where the LC3/GABARAP proteins involved should be susceptible to lipidation in the absence of E3, or else a regulatory mechanism would allow vesicle incorporation and phagophore growth when E3 is present.
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Affiliation(s)
- Marina N Iriondo
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Asier Etxaniz
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Yaiza R Varela
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Uxue Ballesteros
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Melisa Lázaro
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Mikel Valle
- CIC bioGUNE, Basque Research and Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160, Derio, Bizkaia, Spain
| | - Dorotea Fracchiolla
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9, 1030, Vienna, Austria
| | - Sascha Martens
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr. Bohr-Gasse 9, 1030, Vienna, Austria
| | - L Ruth Montes
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Félix M Goñi
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain
| | - Alicia Alonso
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, 48940, Leioa, Spain.
- Department of Biochemistry and Molecular Biology, University of the Basque Country, 48940, Leioa, Spain.
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27
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Starosta R, Santos TC, Dinis de Sousa AF, Santos MS, Corvo ML, Tomaz AI, de Almeida RFM. Assessing the role of membrane lipids in the action of ruthenium(III) anticancer compounds. Front Mol Biosci 2023; 9:1059116. [PMID: 36660430 PMCID: PMC9845782 DOI: 10.3389/fmolb.2022.1059116] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
This work addresses the possible role of the cell membrane in the molecular mechanism of action of two salan-type ruthenium complexes that were previously shown to be active against human tumor cells, namely [Ru(III)(L1)(PPh3)Cl] and [Ru(III)(L2)(PPh3)Cl] (where L1 is 6,6'-(1R,2R)-cyclohexane-1,2-diylbis(azanediyl)bis(methylene)bis(3-methoxyphenol); and L2 is 2,2'-(1R,2R)-cyclohexane-1,2-diylbis(azanediyl)bis(methylene)bis(4-methoxyphenol)). One-component membrane models were first used, a disordered fluid bilayer of dioleoylphosphatodylcholine (DOPC), and an ordered rigid gel bilayer of dipalmitoylphosphatidylcholine. In addition, two quaternary mixtures of phosphatidylcholine, phosphatidylethanolamine, sphingomyelin and cholesterol were used to mimic the lipid composition either of mammalian plasma membrane (1:1:1:1 mol ratio) or of a cancer cell line membrane (36.2:23.6:6.8:33.4 mol ratio). The results show that both salan ligands L1 and L2 bind relatively strongly to DOPC bilayers, but without significantly affecting their structure. The ruthenium complexes have moderate affinity for DOPC. However, their impact on the membranes was notable, leading to a significant increase in the permeability of the lipid vesicles. None of the compounds compromised liposome integrity, as revealed by dynamic light scattering. Fluorescence spectroscopy studies revealed changes in the biophysical properties of all membrane models analyzed in the presence of the two complexes, which promoted an increased fluidity and water penetration into the lipid bilayer in the one-component systems. In the quaternary mixtures, one of the complexes had an analogous effect (increasing water penetration), whereas the other complex reorganized the liquid ordered and liquid disordered domains. Thus, small structural differences in the metal ligands may lead to different outcomes. To better understand the effect of these complexes in cancer cells, the membrane dipole potential was also measured. For both Ru complexes, an increase in the dipole potential was observed for the cancer cell membrane model, while no alteration was detected on the non-cancer plasma membrane model. Our results show that the action of the Ru(III) complexes tested involves changes in the biophysical properties of the plasma membrane, and that it also depends on membrane lipid composition, which is frequently altered in cancer cells when compared to their normal counterparts.
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Affiliation(s)
- Radoslaw Starosta
- Faculty of Chemistry, University of Wroclaw, Wroclaw, Poland,Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Telma C. Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Andreia F. Dinis de Sousa
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - Maria Soledade Santos
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - M. Luisa Corvo
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal,*Correspondence: Rodrigo F. M. de Almeida, ; Ana Isabel Tomaz,
| | - Rodrigo F. M. de Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal,*Correspondence: Rodrigo F. M. de Almeida, ; Ana Isabel Tomaz,
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28
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Zhang Y, Guan R, Huang H. Anti-Allergic Effects of Quercetin and Quercetin Liposomes in RBL-2H3 Cells. Endocr Metab Immune Disord Drug Targets 2023; 23:692-701. [PMID: 35761488 DOI: 10.2174/1871530322666220627151830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND Quercetin is a kind of flavonoid with important bioactivities, such as hypoglycemic, antioxidant, anti-inflammatory, and anti-allergic properties. Although it is unstable, it is worth exploring how to better exert its anti-allergic effect. OBJECTIVE The current study aimed to elucidate the anti-allergic effect of quercetin liposomes on RBL-2H3 cells in vitro. METHODS Quercetin liposomes were prepared to improve the anti-allergic activity of quercetin through a green thin-film dispersion method. We compared the anti-allergic effects of quercetin and quercetin liposomes in RBL-2H3 cells. The anti-allergic activity of the quercetin liposomes was evaluated by the level of β-hexosaminidase, histamine, Ca2+, IL-4, IL-8, and MCP-1. RESULTS The results showed that quercetin liposomes could significantly restrain the release of β-hexosaminidase and histamine, calcium influx, and the expression of inflammatory factors, whose effect is stronger than quercetin. CONCLUSION Collectively, our research suggests that the quercetin liposome can be used as a potential allergy antagonist.
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Affiliation(s)
- Yanhui Zhang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine, China Jiliang University, Hangzhou, China
| | - Rongfa Guan
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou, P.R. China
| | - Haizhi Huang
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection and Quarantine, China Jiliang University, Hangzhou, China
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29
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Ramasubramanian L, Jyothi H, Goldbloom-Helzner L, Light BM, Kumar P, Carney RP, Farmer DL, Wang A. Development and Characterization of Bioinspired Lipid Raft Nanovesicles for Therapeutic Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54458-54477. [PMID: 36448709 PMCID: PMC9756296 DOI: 10.1021/acsami.2c13868] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/14/2022] [Indexed: 06/17/2023]
Abstract
Lipid rafts are highly ordered regions of the plasma membrane enriched in signaling proteins and lipids. Their biological potential is realized in exosomes, a subclass of extracellular vesicles (EVs) that originate from the lipid raft domains. Previous studies have shown that EVs derived from human placental mesenchymal stromal cells (PMSCs) possess strong neuroprotective and angiogenic properties. However, clinical translation of EVs is challenged by very low, impure, and heterogeneous yields. Therefore, in this study, lipid rafts are validated as a functional biomaterial that can recapitulate the exosomal membrane and then be synthesized into biomimetic nanovesicles. Lipidomic and proteomic analyses show that lipid raft isolates retain functional lipids and proteins comparable to PMSC-EV membranes. PMSC-derived lipid raft nanovesicles (LRNVs) are then synthesized at high yields using a facile, extrusion-based methodology. Evaluation of biological properties reveals that LRNVs can promote neurogenesis and angiogenesis through modulation of lipid raft-dependent signaling pathways. A proof-of-concept methodology further shows that LRNVs could be loaded with proteins or other bioactive cargo for greater disease-specific functionalities, thus presenting a novel type of biomimetic nanovesicles that can be leveraged as targeted therapeutics for regenerative medicine.
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Affiliation(s)
- Lalithasri Ramasubramanian
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
- Institute
for Pediatric Regenerative Medicine, Shriners
Hospitals for Children, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Harsha Jyothi
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
| | - Leora Goldbloom-Helzner
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
- Institute
for Pediatric Regenerative Medicine, Shriners
Hospitals for Children, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Brandon M. Light
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
| | - Priyadarsini Kumar
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
- Institute
for Pediatric Regenerative Medicine, Shriners
Hospitals for Children, Sacramento, California 95817, United States
| | - Randy P. Carney
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
| | - Diana L. Farmer
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
- Institute
for Pediatric Regenerative Medicine, Shriners
Hospitals for Children, Sacramento, California 95817, United States
| | - Aijun Wang
- Department
of Surgery, School of Medicine, University of California-Davis, Sacramento, California 95817, United States
- Institute
for Pediatric Regenerative Medicine, Shriners
Hospitals for Children, Sacramento, California 95817, United States
- Department
of Biomedical Engineering, University of
California-Davis, Davis, California 95616, United States
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30
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Iriondo MN, Etxaniz A, Varela YR, Ballesteros U, Hervás JH, Montes LR, Goñi FM, Alonso A. LC3 subfamily in cardiolipin-mediated mitophagy: a comparison of the LC3A, LC3B and LC3C homologs. Autophagy 2022; 18:2985-3003. [PMID: 35414338 PMCID: PMC9673933 DOI: 10.1080/15548627.2022.2062111] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Externalization of the phospholipid cardiolipin (CL) to the outer mitochondrial membrane has been proposed to act as a mitophagy trigger. CL would act as a signal for binding the LC3 macroautophagy/autophagy proteins. As yet, the behavior of the LC3-subfamily members has not been directly compared in a detailed way. In the present contribution, an analysis of LC3A, LC3B and LC3C interaction with CL-containing model membranes, and of their ability to translocate to mitochondria, is described. Binding of LC3A to CL was stronger than that of LC3B; both proteins showed a similar ability to colocalize with mitochondria upon induction of CL externalization in SH-SY5Y cells. Besides, the double silencing of LC3A and LC3B proteins was seen to decrease CCCP-induced mitophagy. Residues 14 and 18 located in the N-terminal region of LC3A were shown to be important for its recognition of damaged mitochondria during rotenone- or CCCP-induced mitophagy. Moreover, the in vitro results suggested a possible role of LC3A, but not of LC3B, in oxidized-CL recognition as a counterweight to excessive apoptosis activation. In the case of LC3C, even if this protein showed a stronger CL binding than LC3B or LC3A, the interaction was less specific, and colocalization of LC3C with mitochondria was not rotenone dependent. These results suggest that, at variance with LC3A, LC3C does not participate in cargo recognition during CL-mediated-mitophagy. The data support the notion that the various LC3-subfamily members might play different roles during autophagy initiation, identifying LC3A as a novel stakeholder in CL-mediated mitophagy. Abbreviations: ACTB/β-actin: actin beta; Atg8: autophagy-related 8; CL: cardiolipin; CCCP: carbonyl cyanide m-chlorophenyl hydrazone; DMSO: dimethyl sulfoxide; DOPE: 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine; DTT: DL-dithiothreitol; FKBP8: FKBP prolyl isomerase 8; GABARAP: GABA type A receptor associated protein; GABARAPL1: GABA type A receptor associated protein like 1; GABARAPL2: GABA type A receptor associated protein like 2; GFP: green fluorescent protein; IMM: inner mitochondrial membrane; LUV/LUVs: large unilamellar vesicle/s; MAP1LC3A/LC3A: microtubule associated protein 1 light chain 3 alpha; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MAP1LC3C/LC3C: microtubule associated protein 1 light chain 3 gamma; NME4/NDPK-D/Nm23-H4: NME/NM23 nucleoside diphosphate kinase 4; O/A: oligomycin A + antimycin A; OMM: outer mitochondrial membrane; PA: phosphatidic acid; PC: phosphatidylcholine; PG: phosphatidylglycerol; PINK1: PTEN induced putative kinase 1; PtdIns4P: phosphatidylinositol-4-phosphate; Rho-PE: lissamine rhodamine phosphatidylethanolamine; SUV/SUVs: small unilamellar vesicle/s.
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Affiliation(s)
- Marina N. Iriondo
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Asier Etxaniz
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Yaiza R. Varela
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Uxue Ballesteros
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Javier H. Hervás
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain,The Molecular Cell Biology of Autophagy, The Francis Crick Institute, London, UK
| | - L. Ruth Montes
- Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Félix M. Goñi
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain
| | - Alicia Alonso
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, Spain,Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa, Spain,CONTACT Alicia Alonso Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa, E-48940, Spain
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31
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Bespalova M, Öz R, Westerlund F, Krishnan M. Single-Molecule Trapping and Measurement in a Nanostructured Lipid Bilayer System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:13923-13934. [PMID: 36326814 PMCID: PMC9671048 DOI: 10.1021/acs.langmuir.2c02203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 10/15/2022] [Indexed: 06/16/2023]
Abstract
The repulsive electrostatic force between a biomolecule and a like-charged surface can be geometrically tailored to create spatial traps for charged molecules in solution. Using a parallel-plate system composed of silicon dioxide surfaces, we recently demonstrated single-molecule trapping and high precision molecular charge measurements in a nanostructured free energy landscape. Here we show that surfaces coated with charged lipid bilayers provide a system with tunable surface properties for molecular electrometry experiments. Working with molecular species whose effective charge and geometry are well-defined, we demonstrate the ability to quantitatively probe the electrical charge density of a supported lipid bilayer. Our findings indicate that the fraction of charged lipids in nanoslit lipid bilayers can be significantly different from that in the precursor lipid mixtures used to generate them. We also explore the temporal stability of bilayer properties in nanofluidic systems. Beyond their relevance in molecular measurement, such experimental systems offer the opportunity to examine lipid bilayer formation and wetting dynamics on nanostructured surfaces.
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Affiliation(s)
- Maria Bespalova
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OxfordOX1 3QZ, United Kingdom
| | - Robin Öz
- Department
of Biology and Biological Engineering, Chalmers
University of Technology, 412 96Gothenburg, Sweden
| | - Fredrik Westerlund
- Department
of Biology and Biological Engineering, Chalmers
University of Technology, 412 96Gothenburg, Sweden
| | - Madhavi Krishnan
- Physical
and Theoretical Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, OxfordOX1 3QZ, United Kingdom
- The
Kavli Institute for Nanoscience Discovery, Sherrington Road, OxfordOX1 3QU, United Kingdom
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32
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Chiechio RM, Ducarre S, Marets C, Dupont A, Even-Hernandez P, Pinson X, Dutertre S, Artzner F, Musumeci P, Ravel C, Faro MJL, Marchi V. Encapsulation of Luminescent Gold Nanoclusters into Synthetic Vesicles. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12213875. [PMID: 36364651 PMCID: PMC9655092 DOI: 10.3390/nano12213875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 10/24/2022] [Accepted: 10/26/2022] [Indexed: 06/02/2023]
Abstract
Gold nanoclusters (Au NCs) are attractive luminescent nanoprobes for biomedical applications. In vivo biosensing and bioimaging requires the delivery of the Au NCs into subcellular compartments. In this view, we explore here the possible encapsulation of ultra-small-sized red and blue emitting Au NCs into liposomes of various sizes and chemical compositions. Different methods were investigated to prepare vesicles containing Au NCs in their lumen. The efficiency of the process was correlated to the structural and morphological aspect of the Au NCs' encapsulating vesicles thanks to complementary analyses by SAXS, cryo-TEM, and confocal microscopy techniques. Cell-like-sized vesicles (GUVs) encapsulating red or blue Au NCs were successfully obtained by an innovative method using emulsion phase transfer. Furthermore, exosome-like-sized vesicles (LUVs) containing Au NCs were obtained with an encapsulation yield of 40%, as estimated from ICP-MS.
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Affiliation(s)
- Regina M. Chiechio
- Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Université Rennes 1, F-35000 Rennes, France
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università Di Catania, Via Santa Sofia 64, 95123 Catania, Italy
- IMM-CNR, Via S. Sofia 64, 95123 Catania, Italy
| | | | - Célia Marets
- Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Université Rennes 1, F-35000 Rennes, France
| | - Aurélien Dupont
- BIOSIT, Inserm, CNRS UMS 3480, Université Rennes1, US_S 018, F-35000 Rennes, France
| | - Pascale Even-Hernandez
- Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Université Rennes 1, F-35000 Rennes, France
| | - Xavier Pinson
- Microscopy Rennes Imaging Centre, SFR Biosit, CNRS UMS 3480—US INSERM 018, Université Rennes 1, F-35000 Rennes, France
| | - Stéphanie Dutertre
- Microscopy Rennes Imaging Centre, SFR Biosit, CNRS UMS 3480—US INSERM 018, Université Rennes 1, F-35000 Rennes, France
| | - Franck Artzner
- Institut de Physique, CNRS UMR 6251, Université Rennes 1, F-35000 Rennes, France
| | - Paolo Musumeci
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università Di Catania, Via Santa Sofia 64, 95123 Catania, Italy
| | - Célia Ravel
- Service de Biologie de la Reproduction-CECOS, CHU Rennes, F-35000 Rennes, France
- Irset (Institut de Recherche en Santé, Environnement et Travail), Inserm, EHESP, Université Rennes 1, F-35000 Rennes, France
| | - Maria Jose Lo Faro
- Dipartimento di Fisica e Astronomia “Ettore Majorana”, Università Di Catania, Via Santa Sofia 64, 95123 Catania, Italy
- IMM-CNR, Via S. Sofia 64, 95123 Catania, Italy
| | - Valérie Marchi
- Institut des Sciences Chimiques de Rennes, CNRS UMR 6226, Université Rennes 1, F-35000 Rennes, France
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33
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Jiang W, Wu Z, Gao Z, Wan M, Zhou M, Mao C, Shen J. Artificial Cells: Past, Present and Future. ACS NANO 2022; 16:15705-15733. [PMID: 36226996 DOI: 10.1021/acsnano.2c06104] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Artificial cells are constructed to imitate natural cells and allow researchers to explore biological process and the origin of life. The construction methods for artificial cells, through both top-down or bottom-up approaches, have achieved great progress over the past decades. Here we present a comprehensive overview on the development of artificial cells and their properties and applications. Artificial cells are derived from lipids, polymers, lipid/polymer hybrids, natural cell membranes, colloidosome, metal-organic frameworks and coacervates. They can be endowed with various functions through the incorporation of proteins and genes on the cell surface or encapsulated inside of the cells. These modulations determine the properties of artificial cells, including producing energy, cell growth, morphology change, division, transmembrane transport, environmental response, motility and chemotaxis. Multiple applications of these artificial cells are discussed here with a focus on therapeutic applications. Artificial cells are used as carriers for materials and information exchange and have been shown to function as targeted delivery systems of personalized drugs. Additionally, artificial cells can function to substitute for cells with impaired function. Enzyme therapy and immunotherapy using artificial cells have been an intense focus of research. Finally, prospects of future development of cell-mimic properties and broader applications are highlighted.
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Affiliation(s)
- Wentao Jiang
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Ziyu Wu
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Zheng Gao
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Mimi Wan
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Min Zhou
- Department of Vascular Surgery, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Chun Mao
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
| | - Jian Shen
- National and Local Joint Engineering Research Center of Biomedical Functional Materials, School of Chemistry and Materials Science, Nanjing Normal University, Nanjing 210023, China
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34
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Vasquez‐Montes V, Tyagi V, Sikorski E, Kyrychenko A, Freites JA, Thévenin D, Tobias DJ, Ladokhin AS. Ca 2+ -dependent interactions between lipids and the tumor-targeting peptide pHLIP. Protein Sci 2022; 31:e4385. [PMID: 36040255 PMCID: PMC9366937 DOI: 10.1002/pro.4385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/31/2022] [Accepted: 06/24/2022] [Indexed: 11/08/2022]
Abstract
Cancerous tissues undergo extensive changes to their cellular environments that differentiate them from healthy tissues. These changes include changes in extracellular pH and Ca2+ concentrations, and the exposure of phosphatidylserine (PS) to the extracellular environment, which can modulate the interaction of peptides and proteins with the plasma membrane. Deciphering the molecular mechanisms of such interactions is critical for advancing the knowledge-based design of cancer-targeting molecular tools, such as pH-low insertion peptide (pHLIP). Here, we explore the effects of PS, Ca2+ , and peptide protonation state on the interactions of pHLIP with lipid membranes. Cellular studies demonstrate that exposed PS on the plasma membrane promotes pHLIP targeting. The magnitude of this effect is dependent on extracellular Ca2+ concentration, indicating that divalent cations play an important role in pHLIP targeting in vivo. The targeting mechanism is further explored with a combination of fluorescence and circular dichroism experiments in model membranes and microsecond-timescale all-atom molecular dynamics simulations. Our results demonstrate that Ca2+ is engaged in coupling peptide-lipid interactions in the unprotonated transmembrane conformation of pHLIP. The simulations reveal that while the pH-induced insertion leads to a strong depletion of PS around pHLIP, the Ca2+ -induced insertion has the opposite effect. Thus, extracellular levels of Ca2+ are crucial to linking cellular changes in membrane lipid composition with the selective targeting and insertion of pHLIP. The characterized Ca2+ -dependent coupling between pHLIP sidechains and PS provides atomistic insights into the general mechanism for lipid-coupled regulation of protein-membrane insertion by divalent cations.
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Affiliation(s)
- Victor Vasquez‐Montes
- Department of Biochemistry and Molecular BiologyThe University of Kansas Medical CenterKansas CityKansasUSA
| | - Vivek Tyagi
- Department of ChemistryUniversity of CaliforniaIrvineCaliforniaUSA
| | - Eden Sikorski
- Department of ChemistryLehigh UniversityBethlehemPennsylvaniaUSA
| | - Alexander Kyrychenko
- Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National UniversityKharkivUkraine
| | | | - Damien Thévenin
- Department of ChemistryLehigh UniversityBethlehemPennsylvaniaUSA
| | | | - Alexey S. Ladokhin
- Department of Biochemistry and Molecular BiologyThe University of Kansas Medical CenterKansas CityKansasUSA
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35
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Membranolytic Mechanism of Amphiphilic Antimicrobial β-Stranded [KL]n Peptides. Biomedicines 2022; 10:biomedicines10092071. [PMID: 36140173 PMCID: PMC9495826 DOI: 10.3390/biomedicines10092071] [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: 07/26/2022] [Revised: 08/19/2022] [Accepted: 08/21/2022] [Indexed: 11/17/2022] Open
Abstract
Amphipathic peptides can act as antibiotics due to membrane permeabilization. KL peptides with the repetitive sequence [Lys-Leu]n-NH2 form amphipathic β-strands in the presence of lipid bilayers. As they are known to kill bacteria in a peculiar length-dependent manner, we suggest here several different functional models, all of which seem plausible, including a carpet mechanism, a β-barrel pore, a toroidal wormhole, and a β-helix. To resolve their genuine mechanism, the activity of KL peptides with lengths from 6–26 amino acids (plus some inverted LK analogues) was systematically tested against bacteria and erythrocytes. Vesicle leakage assays served to correlate bilayer thickness and peptide length and to examine the role of membrane curvature and putative pore diameter. KL peptides with 10–12 amino acids showed the best therapeutic potential, i.e., high antimicrobial activity and low hemolytic side effects. Mechanistically, this particular window of an optimum β-strand length around 4 nm (11 amino acids × 3.7 Å) would match the typical thickness of a lipid bilayer, implying the formation of a transmembrane pore. Solid-state 15N- and 19F-NMR structure analysis, however, showed that the KL backbone lies flat on the membrane surface under all conditions. We can thus refute any of the pore models and conclude that the KL peptides rather disrupt membranes by a carpet mechanism. The intriguing length-dependent optimum in activity can be fully explained by two counteracting effects, i.e., membrane binding versus amyloid formation. Very short KL peptides are inactive, because they are unable to bind to the lipid bilayer as flexible β-strands, whereas very long peptides are inactive due to vigorous pre-aggregation into β-sheets in solution.
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36
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Wang Z, Li J, Lin G, He Z, Wang Y. Metal complex-based liposomes: Applications and prospects in cancer diagnostics and therapeutics. J Control Release 2022; 348:1066-1088. [PMID: 35718211 DOI: 10.1016/j.jconrel.2022.06.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 06/09/2022] [Indexed: 12/17/2022]
Abstract
Metal complexes are of increasing interest as pharmaceutical agents in cancer diagnostics and therapeutics, while some of them suffer from issues such as limited water solubility and severe systemic toxicity. These drawbacks severely hampered their efficacy and clinical applications. Liposomes hold promise as delivery vehicles for constructing metal complex-based liposomes to maximize the therapeutic efficacy and minimize the side effects of metal complexes. This review provides an overview on the latest advances of metal complex-based liposomal delivery systems. First, the development of metal complex-mediated liposomal encapsulation is briefly introduced. Next, applications of metal complex-based liposomes in a variety of fields are overviewed, where drug delivery, cancer imaging (single photon emission computed tomography (SPECT), positron emission tomography (PET), and magnetic resonance imaging (MRI)), and cancer therapy (chemotherapy, phototherapy, and radiotherapy) were involved. Moreover, the potential toxicity, action of toxic mechanisms, immunological effects of metal complexes as well as the advantages of metal complex-liposomes in this content are also discussed. In the end, the future expectations and challenges of metal complex-based liposomes in clinical cancer therapy are tentatively proposed.
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Affiliation(s)
- Zhaomeng Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Jinbo Li
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Guimei Lin
- School of Pharmacy, Shandong University, Jinan 250000, PR China
| | - Zhonggui He
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
| | - Yongjun Wang
- Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
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37
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Varela YR, Iriondo MN, Etxaniz A, Ballesteros U, Montes LR, Goñi FM, Alonso A. Ceramide enhances binding of LC3/GABARAP autophagy proteins to cardiolipin-containing membranes. Int J Biol Macromol 2022; 217:748-760. [PMID: 35839958 DOI: 10.1016/j.ijbiomac.2022.07.032] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/29/2022] [Accepted: 07/05/2022] [Indexed: 12/19/2022]
Abstract
Macroautophagy, or autophagy, is a process in which cell macromolecules, or even organelles, are engulfed in a double-membrane vesicle, the autophagosome, and directed to a lysosome. Among autophagy-related proteins, LC3/GABARAP constitute a protein family derived from yeast Atg8. They play important roles in autophagosome formation, binding future cargo organelles and promoting autophagosome growth. The involvement of specific lipids in this process is poorly understood. The present study explores the interaction of LC3/GABARAP proteins with phospholipid monolayers and bilayers based on phosphatidylcholine or on sphingomyelin. Cardiolipin is found to be essential for the protein interaction with such bilayers, as measured through gradient centrifugation experiments, while ceramide markedly increases binding. Giant unilamellar vesicles examined under confocal fluorescence microscopy reveal that ceramide segregates laterally into very rigid domains, while GABARAP binds only the more fluid regions, suggesting that the enhancing role of ceramide is exerted by the minority of ceramide molecules dispersed in the fluid phase. Although in further autophagy steps the LC3/GABARAP proteins are covalently bound to a phospholipid, this is not the case in our system, thus it is proposed that the observed ceramide effects would correspond to very early stages in the process, such as cargo recognition.
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Affiliation(s)
- Yaiza R Varela
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - Marina N Iriondo
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - Asier Etxaniz
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - Uxue Ballesteros
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - L Ruth Montes
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - Félix M Goñi
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain
| | - Alicia Alonso
- Instituto Biofisika (UPV/EHU, CSIC), University of the Basque Country, Leioa E-48940, Spain; Department of Biochemistry and Molecular Biology, University of the Basque Country, Leioa E-48940, Spain.
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38
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Pham DT, Nguyen LP, Pham QTH, Pham CK, Pham DTN, Viet NT, Nguyen HVT, Tran TQ, Nguyen DT. A low-cost, flexible extruder for liposomes synthesis and application for Murrayafoline A delivery for cancer treatment. J Biomater Appl 2022; 37:872-880. [PMID: 35786069 DOI: 10.1177/08853282221112491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Liposomal encapsulation is a drug delivery strategy with many advantages, such as improved bioavailability, ability to carry large drug loads, as well as controllability and specificity towards various targeted diseased tissues. Currently, most preparation techniques require an additional extrusion or filtering step to obtain monodisperse liposomes with the size of less than 100 nm. In this study, a compact liposome extruder was designed at a cost of $4.00 and used to synthesize liposome suspensions with defined particle size and high homogeneity for Murrayafoline A (Mu-A) loading and release. The synthesized MuA-loaded liposomes displayed a biphasic drug release and remained stable under the storage condition of 4°C. They also significantly reduced the viability of HepG2 cells in the cancer spheroids by 25%. The low-cost, flexible liposome extruder would allow the researchers to study liposomes and their applications in a cost-effective manner.
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Affiliation(s)
- Dan The Pham
- 61797Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | | | | | - Chi Khanh Pham
- 61797Vietnam Academy of Science and Technology, Hanoi, Viet Nam
| | - Dung Thuy Nguyen Pham
- Institute of Applied Technology and Sustainable Development, 384731Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | - Nguyen Thanh Viet
- Institute of Applied Technology and Sustainable Development, 384731Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam
| | | | - Toan Quoc Tran
- 61797Vietnam Academy of Science and Technology, Hanoi, Viet Nam
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39
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Borges-Araújo L, Monteiro ME, Mil-Homens D, Bernardes N, Sarmento MJ, Coutinho A, Prieto M, Fernandes F. Impact of Ca 2+-Induced PI(4,5)P 2 Clusters on PH-YFP Organization and Protein-Protein Interactions. Biomolecules 2022; 12:912. [PMID: 35883468 PMCID: PMC9312469 DOI: 10.3390/biom12070912] [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: 05/12/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 11/16/2022] Open
Abstract
Despite its low abundance, phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) is a key modulator of membrane-associated signaling events in eukaryotic cells. Temporal and spatial regulation of PI(4,5)P2 concentration can achieve localized increases in the levels of this lipid, which are crucial for the activation or recruitment of peripheral proteins to the plasma membrane. The recent observation of the dramatic impact of physiological divalent cation concentrations on PI(4,5)P2 clustering, suggests that protein anchoring to the plasma membrane through PI(4,5)P2 is likely not defined solely by a simple (monomeric PI(4,5)P2)/(protein bound PI(4,5)P2) equilibrium, but instead depends on complex protein interactions with PI(4,5)P2 clusters. The insertion of PI(4,5)P2-binding proteins within these clusters can putatively modulate protein-protein interactions in the membrane, but the relevance of such effects is largely unknown. In this work, we characterized the impact of Ca2+ on the organization and protein-protein interactions of PI(4,5)P2-binding proteins. We show that, in giant unilamellar vesicles presenting PI(4,5)P2, the membrane diffusion properties of pleckstrin homology (PH) domains tagged with a yellow fluorescent protein (YFP) are affected by the presence of Ca2+, suggesting direct interactions between the protein and PI(4,5)P2 clusters. Importantly, PH-YFP is found to dimerize in the membrane in the absence of Ca2+. This oligomerization is inhibited in the presence of physiological concentrations of the divalent cation. These results confirm that cation-dependent PI(4,5)P2 clustering promotes interactions between PI(4,5)P2-binding proteins and has the potential to dramatically influence the organization and downstream interactions of PI(4,5)P2-binding proteins in the plasma membrane.
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Affiliation(s)
- Luís Borges-Araújo
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
| | - Marina E. Monteiro
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (M.E.M.); (M.J.S.)
| | - Dalila Mil-Homens
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
| | - Nuno Bernardes
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
| | - Maria J. Sarmento
- Centro de Química-Física Molecular and Institute of Nanoscience and Nanotechnology, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (M.E.M.); (M.J.S.)
- Instituto de Medicina Molecular, Faculty of Medicine, University of Lisbon, Avenida Prof. Egas Moniz, 1649-028 Lisbon, Portugal
| | - Ana Coutinho
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
- Departamento de Química e Bioquímica, Faculty of Sciences, University of Lisbon, 1749-016 Lisbon, Portugal
| | - Manuel Prieto
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
| | - Fábio Fernandes
- IBB—Institute for Bioengineering and Biosciences, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal; (L.B.-A.); (D.M.-H.); (N.B.); (A.C.); (M.P.)
- Associate Laboratory i4HB—Institute for Health and Bioeconomy at Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
- Department of Bioengineering, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
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Fischer M, Müller P, Scheidt HA, Luck M. Drug-Membrane Interactions: Effects of Virus-Specific RNA-Dependent RNA Polymerase Inhibitors Remdesivir and Favipiravir on the Structure of Lipid Bilayers. Biochemistry 2022; 61:1392-1403. [PMID: 35731976 DOI: 10.1021/acs.biochem.2c00042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The two RNA-dependent RNA polymerase inhibitors remdesivir and favipiravir were originally developed and approved as broad-spectrum antiviral drugs for the treatment of harmful viral infections such as Ebola and influenza. With the outbreak of the global SARS-CoV-2 pandemic, the two drugs were repurposed for the treatment of COVID-19 patients. Clinical studies suggested that the efficacy of the drugs is enhanced in the case of an early or even prophylactic application. Because the contact between drug molecules and the plasma membrane is essential for a successful permeation process of the substances and therefore for their intracellular efficiency, drug-induced effects on the membrane structure are likely and have already been shown for other substances. We investigated the impact of remdesivir and favipiravir on lipid bilayers in model and cell membranes via several biophysical approaches. The measurements revealed that the embedding of remdesivir molecules in the lipid bilayer results in a disturbance of the membrane structure of the tested phospholipid vesicles. Nevertheless, in a cell-based assay, the presence of remdesivir induced only weak hemolysis of the treated erythrocytes. In contrast, no experimental indication for an effect on the structure and integrity of the membrane was detected in the case of favipiravir. Regarding potential prophylactic or accompanying use of the drugs in the therapy of COVID-19, the physiologically relevant impacts associated with the drug-induced structural modifications of the membrane might be important to understand side effects and/or low effectivities.
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Affiliation(s)
- Markus Fischer
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Peter Müller
- Institute of Biology, Biophysical Chemistry, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
| | - Holger A Scheidt
- Institute for Medical Physics and Biophysics, Leipzig University, 04107 Leipzig, Germany
| | - Meike Luck
- Institute of Biology, Biophysical Chemistry, Humboldt-Universität zu Berlin, 10115 Berlin, Germany
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Tumor protein D54 binds intracellular nanovesicles via an extended amphipathic region. J Biol Chem 2022; 298:102136. [PMID: 35714773 PMCID: PMC9270247 DOI: 10.1016/j.jbc.2022.102136] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 06/07/2022] [Accepted: 06/09/2022] [Indexed: 11/22/2022] Open
Abstract
Tumor Protein D54 (TPD54) is an abundant cytosolic protein that belongs to the TPD52 family, a family of four proteins (TPD52, 53, 54 and 55) that are overexpressed in several cancer cells. Even though the functions of these proteins remain elusive, recent investigations indicate that TPD54 binds to very small cytosolic vesicles with a diameter of ca. 30 nm, half the size of classical (e.g. COPI and COPII) transport vesicles. Here, we investigated the mechanism of intracellular nanovesicle capture by TPD54. Bioinformatical analysis suggests that TPD54 contains a small coiled-coil followed by four amphipathic helices (AH1-4), which could fold upon binding to lipid membranes. Limited proteolysis, circular dichroism (CD) spectroscopy, tryptophan fluorescence, and cysteine mutagenesis coupled to covalent binding of a membrane sensitive probe showed that binding of TPD54 to small liposomes is accompanied by large structural changes in the amphipathic helix region. Furthermore, site-directed mutagenesis indicated that AH2 and AH3 have a predominant role in TPD54 binding to membranes both in cells and using model liposomes. We found that AH3 has the physicochemical features of an Amphipathic Lipid Packing Sensor (ALPS) motif, which, in other proteins, enables membrane binding in a curvature-dependent manner. Accordingly, we observed that binding of TPD54 to liposomes is very sensitive to membrane curvature and lipid unsaturation. We conclude that TPD54 recognizes nanovesicles through a combination of ALPS-dependent and -independent mechanisms.
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Ballesteros U, Etxaniz A, Iriondo MN, Varela YR, Lázaro M, Viguera AR, Montes LR, Valle M, Goñi FM, Alonso A. Autophagy protein LC3C binding to phospholipid and interaction with lipid membranes. Int J Biol Macromol 2022; 212:432-441. [PMID: 35618088 DOI: 10.1016/j.ijbiomac.2022.05.129] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 01/18/2023]
Abstract
Autophagy is a process in which parts of the eukaryotic cell are selectively degraded in the lysosome. The materials to be catabolized are first surrounded by a double-membrane structure, the autophagosome. Autophagosome generation is a complex event, in which many proteins are involved. Among the latter, yeast Atg8 or its mammalian orthologues are essential in autophagosome membrane elongation, shaping and closure. A subfamily of the human Atg8 orthologues is formed by the proteins LC3A, LC3B, and LC3C. Previous studies suggest that, at variance with the other two, LC3C does not participate in cardiolipin-mediated mitophagy. The present study was devoted to exploring the binding of LC3C to lipid vesicles, bilayers and monolayers, and the ensuing protein-dependent perturbing effects, in the absence of the mitochondrial lipid cardiolipin. All Atg8 orthologues are covalently bound to a phospholipid prior to their involvement in autophagosome elongation. In our case, a mutant in the C-terminal amino acid, LC3C G126C, together with the use of a maleimide-derivatized phosphatidyl ethanolamine, ensured LC3C lipidation, up to 100% under certain conditions. Ultracentrifugation, surface pressure measurements, spectroscopic and cryo-electron microscopic techniques revealed that lipidated LC3C induced vesicle aggregation (5-fold faster in sonicated than in large unilamellar vesicles) and inter-vesicular lipid mixing (up to 82%), including inner-monolayer lipid mixing (up to 32%), consistent with in vitro partial vesicle fusion. LC3C was also able to cause the release of 80-90% vesicular aqueous contents. The data support the idea that LC3C would be able to help in autophagosome elongation/fusion in autophagy phenomena.
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Affiliation(s)
- Uxue Ballesteros
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Asier Etxaniz
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Marina N Iriondo
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Yaiza R Varela
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Melisa Lázaro
- CIC bioGUNE, Basque Research & Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160 Derio, Bizkaia, Spain
| | - Ana R Viguera
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - L Ruth Montes
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Mikel Valle
- CIC bioGUNE, Basque Research & Technology Alliance (BRTA), Bizkaia Technology Park, Building 800, 48160 Derio, Bizkaia, Spain
| | - Félix M Goñi
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain
| | - Alicia Alonso
- Instituto Biofisika (CSIC, UPV/EHU) and Department of Biochemistry, University of the Basque Country, 48940 Leioa, Spain.
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Cintra ER, Hayasaki TG, Sousa-Junior AA, Silva ACG, Valadares MC, Bakuzis AF, Mendanha SA, Lima EM. Folate-Targeted PEGylated Magnetoliposomes for Hyperthermia-Mediated Controlled Release of Doxorubicin. Front Pharmacol 2022; 13:854430. [PMID: 35387345 PMCID: PMC8978894 DOI: 10.3389/fphar.2022.854430] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Doxorubicin (DOX) is a chemotherapeutic agent commonly used for the treatment of solid tumors. However, the cardiotoxicity associated with its prolonged use prevents further adherence and therapeutic efficacy. By encapsulating DOX within a PEGylated liposome, Doxil® considerably decreased DOX cardiotoxicity. By using thermally sensitive lysolipids in its bilayer composition, ThermoDox® implemented a heat-induced controlled release of DOX. However, both ThermoDox® and Doxil® rely on their passive retention in tumors, depending on their half-lives in blood. Moreover, ThermoDox® ordinarily depend on invasive radiofrequency-generating metallic probes for local heating. In this study, we prepare, characterize, and evaluate the antitumoral capabilities of DOX-loaded folate-targeted PEGylated magnetoliposomes (DFPML). Unlike ThermoDox®, DOX delivery via DFPML is mediated by the heat released through dynamic hysteresis losses from magnetothermal converting systems composed by MnFe2O4 nanoparticles (NPs) under AC magnetic field excitation—a non-invasive technique designated magnetic hyperthermia (MHT). Moreover, DFPML dismisses the use of thermally sensitive lysolipids, allowing the use of simpler and cheaper alternative lipids. MnFe2O4 NPs and DFPML are fully characterized in terms of their size, morphology, polydispersion, magnetic, and magnetothermal properties. About 50% of the DOX load is released from DFPML after 30 min under MHT conditions. Being folate-targeted, in vitro DFPML antitumoral activity is higher (IC50 ≈ 1 μg/ml) for folate receptor-overexpressing B16F10 murine melanoma cells, compared to MCF7 human breast adenocarcinoma cells (IC50 ≈ 4 μg/ml). Taken together, our results indicate that DFPML are strong candidates for folate-targeted anticancer therapies based on DOX controlled release.
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Affiliation(s)
- Emílio R Cintra
- FarmaTec-Laboratory of Pharmaceutical Technology, School of Pharmacy, Federal University of Goias, Goiania, Brazil
| | - Tacio G Hayasaki
- FarmaTec-Laboratory of Pharmaceutical Technology, School of Pharmacy, Federal University of Goias, Goiania, Brazil
| | - Ailton A Sousa-Junior
- FarmaTec-Laboratory of Pharmaceutical Technology, School of Pharmacy, Federal University of Goias, Goiania, Brazil
| | - Artur C G Silva
- Toxin-Laboratory of Education and Research in In Vitro Toxicology, School of Pharmacy, Federal University of Goias, Goiania, Brazil
| | - Marize C Valadares
- Toxin-Laboratory of Education and Research in In Vitro Toxicology, School of Pharmacy, Federal University of Goias, Goiania, Brazil
| | - Andris F Bakuzis
- Physics Institute, Federal University of Goias, Goiania, Brazil.,CNanoMed-Nanomedicine Integrated Research Center, Federal University of Goias, Goiania, Brazil
| | - Sebastião A Mendanha
- FarmaTec-Laboratory of Pharmaceutical Technology, School of Pharmacy, Federal University of Goias, Goiania, Brazil.,Physics Institute, Federal University of Goias, Goiania, Brazil.,CNanoMed-Nanomedicine Integrated Research Center, Federal University of Goias, Goiania, Brazil
| | - Eliana M Lima
- FarmaTec-Laboratory of Pharmaceutical Technology, School of Pharmacy, Federal University of Goias, Goiania, Brazil.,CNanoMed-Nanomedicine Integrated Research Center, Federal University of Goias, Goiania, Brazil
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Scott KL, William N, Acker JP. The response of a human hematopoietic cell line to trehalose-loaded liposomes and their effect on post-thaw membrane integrity. Cryobiology 2022; 106:160-163. [DOI: 10.1016/j.cryobiol.2022.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/08/2022] [Accepted: 03/25/2022] [Indexed: 11/28/2022]
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Wang Y, Weremiejczyk L, Strzelecka‐Kiliszek A, Maniti O, Amabile Veschi E, Bolean M, Ramos AP, Ben Trad L, Magne D, Bandorowicz‐Pikula J, Pikula S, Millán JL, Bottini M, Goekjian P, Ciancaglini P, Buchet R, Dou WT, Tian H, Mebarek S, He XP, Granjon T. Fluorescence evidence of annexin A6 translocation across membrane in model matrix vesicles during apatite formation. JOURNAL OF EXTRACELLULAR BIOLOGY 2022; 1:e38. [PMID: 38939118 PMCID: PMC11080897 DOI: 10.1002/jex2.38] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 03/20/2022] [Accepted: 03/21/2022] [Indexed: 06/29/2024]
Abstract
Matrix vesicles (MVs) are 100-300 nm spherical structures released by mineralization competent cells to initiate formation of apatite, the mineral component in bones. Among proteins present in MVs, annexin A6 (AnxA6) is thought to be ubiquitously distributed in the MVs' lumen, on the surface of the internal and external leaflets of the membrane and also inserted in the lipid bilayer. To determine the molecular mechanism(s) that lead to the different locations of AnxA6, we hypothesized the occurrence of a pH drop during the mineralization. Such a change would induce the AnxA6 protonation, which in turn, and because of its isoelectric point of 5.41, would change the protein hydrophobicity facilitating its insertion into the MVs' bilayer. The various distributions of AnxA6 are likely to disturb membrane phospholipid organization. To examine this possibility, we used fluorescein as pH reporter, and established that pH decreased inside MVs during apatite formation. Then, 4-(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-phenol, a vibration-induced emission fluorescent probe, was used as a reporter of changes in membrane organization occurring with the varying mode of AnxA6 binding. Proteoliposomes containing AnxA6 and 1,2-Dimyristoyl-sn-glycero-3phosphocholine (DMPC) or 1,2-Dimyristoyl-sn-glycero-3phosphocholine: 1,2-Dipalmitoyl-sn-glycero-3-phosphoserine (DMPC:DPPS 9:1), to mimic the external and internal MV membrane leaflet, respectively, served as biomimetic models to investigate the nature of AnxA6 binding. Addition of Anx6 to DMPC at pH 7.4 and 5.4, or DMPC:DPPS (9:1) at pH 7.4 induced a decrease in membrane fluidity, consistent with AnxA6 interactions with the bilayer surface. In contrast, AnxA6 addition to DMPC:DPPS (9:1) at pH 5.4 increased the fluidity of the membrane. This latest result was interpreted as reflecting the insertion of AnxA6 into the bilayer. Taken together, these findings point to a possible mechanism of AnxA6 translocation in MVs from the surface of the internal leaflet into the phospholipid bilayer stimulated upon acidification of the MVs' lumen during formation of apatite.
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Affiliation(s)
- Yubo Wang
- Univ LyonUCBLCNRSICBMS UMR 5246IMBLLyonFrance
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CentreEast China University of Science and TechnologyShanghaiChina
| | - Liliana Weremiejczyk
- Laboratory of Biochemistry of LipidsNencki Institute of Experimental BiologyWarsawPoland
| | | | | | - Ekeveliny Amabile Veschi
- Departamento de QuímicaFaculdade de FilosofiaCiências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP‐USP)Ribeirão PretoSão PauloBrazil
| | - Mayte Bolean
- Departamento de QuímicaFaculdade de FilosofiaCiências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP‐USP)Ribeirão PretoSão PauloBrazil
| | - Ana Paula Ramos
- Departamento de QuímicaFaculdade de FilosofiaCiências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP‐USP)Ribeirão PretoSão PauloBrazil
| | | | - David Magne
- Univ LyonUCBLCNRSICBMS UMR 5246IMBLLyonFrance
| | | | - Slawomir Pikula
- Laboratory of Biochemistry of LipidsNencki Institute of Experimental BiologyWarsawPoland
| | - Jose Luis Millán
- Sanford Burnham Prebys Medical Discovery InstituteLa JollaCaliforniaUSA
| | - Massimo Bottini
- Department of Experimental MedicineUniversity of Rome Tor VergataRomeItaly
| | | | - Pietro Ciancaglini
- Departamento de QuímicaFaculdade de FilosofiaCiências e Letras de Ribeirão Preto da Universidade de São Paulo (FFCLRP‐USP)Ribeirão PretoSão PauloBrazil
| | - René Buchet
- Univ LyonUCBLCNRSICBMS UMR 5246IMBLLyonFrance
| | - Wei Tao Dou
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CentreEast China University of Science and TechnologyShanghaiChina
| | - He Tian
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CentreEast China University of Science and TechnologyShanghaiChina
| | | | - Xiao P. He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular EngineeringFeringa Nobel Prize Scientist Joint Research CentreEast China University of Science and TechnologyShanghaiChina
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Marques MC, Lousa D, Silva PM, Faustino AF, Soares CM, Santos NC. The Importance of Lipid Conjugation on Anti-Fusion Peptides against Nipah Virus. Biomedicines 2022; 10:biomedicines10030703. [PMID: 35327503 PMCID: PMC8945041 DOI: 10.3390/biomedicines10030703] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/13/2022] [Accepted: 03/14/2022] [Indexed: 01/23/2023] Open
Abstract
Nipah virus (NiV) is a recently emerging zoonotic virus that belongs to the Paramyxoviridae family and the Henipavirus genus. It causes a range of conditions, from asymptomatic infection to acute respiratory illness and fatal encephalitis. The high mortality rate of 40 to 90% ranks these viruses among the deadliest viruses known to infect humans. Currently, there is no antiviral drug available for Nipah virus disease and treatment is only supportive. Thus, there is an urgent demand for efficient antiviral therapies. NiV F protein, which catalyzes fusion between the viral and host membranes, is a potential target for antiviral drugs, as it is a key protein in the initial stages of infection. Fusion inhibitor peptides derived from the HRC-domain of the F protein are known to bind to their complementary domain in the protein’s transient intermediate state, preventing the formation of a six-helix bundle (6HB) thought to be responsible for driving the fusion of the viral and cell membranes. Here, we evaluated the biophysical and structural properties of four different C-terminal lipid-tagged peptides. Different compositions of the lipid tags were tested to search for properties that might promote efficacy and broad-spectrum activity. Fluorescence spectroscopy was used to study the interaction of the peptides with biomembrane model systems and human blood cells. In order to understand the structural properties of the peptides, circular dichroism measurements and molecular dynamics simulations were performed. Our results indicate a peptide preference for cholesterol-enriched membranes and a lipid conjugation-driven stabilization of the peptide α-helical secondary structure. This work may contribute for the development of highly effective viral fusion against NiV inhibitors.
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Affiliation(s)
- Marta C. Marques
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (M.C.M.); (P.M.S.); (A.F.F.)
| | - Diana Lousa
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal; (D.L.); (C.M.S.)
| | - Patrícia M. Silva
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (M.C.M.); (P.M.S.); (A.F.F.)
| | - André F. Faustino
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (M.C.M.); (P.M.S.); (A.F.F.)
| | - Cláudio M. Soares
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa, 2780-157 Oeiras, Portugal; (D.L.); (C.M.S.)
| | - Nuno C. Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, Portugal; (M.C.M.); (P.M.S.); (A.F.F.)
- Correspondence:
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Lu Y, Allegri G, Huskens J. Vesicle-based artificial cells: materials, construction methods and applications. MATERIALS HORIZONS 2022; 9:892-907. [PMID: 34908080 PMCID: PMC8900604 DOI: 10.1039/d1mh01431e] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 11/19/2021] [Indexed: 05/27/2023]
Abstract
The construction of artificial cells with specific cell-mimicking functions helps to explore complex biological processes and cell functions in natural cell systems and provides an insight into the origins of life. Bottom-up methods are widely used for engineering artificial cells based on vesicles by the in vitro assembly of biomimetic materials. In this review, the design of artificial cells with a specific function is discussed, by considering the selection of synthetic materials and construction technologies. First, a range of biomimetic materials for artificial cells is reviewed, including lipid, polymeric and hybrid lipid/copolymer materials. Biomaterials extracted from natural cells are also covered in this part. Then, the formation of microscale, giant unilamellar vesicles (GUVs) is reviewed based on different technologies, including gentle hydration, electro-formation, phase transfer and microfluidic methods. Subsequently, applications of artificial cells based on single vesicles or vesicle networks are addressed for mimicking cell behaviors and signaling processes. Microreactors for synthetic biology and cell-cell communication are highlighted here as well. Finally, current challenges and future trends for the development and applications of artificial cells are described.
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Affiliation(s)
- Yao Lu
- Molecular NanoFabrication Group, Department of Molecules & Materials, MESA+ Institute, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
| | - Giulia Allegri
- Molecular NanoFabrication Group, Department of Molecules & Materials, MESA+ Institute, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
| | - Jurriaan Huskens
- Molecular NanoFabrication Group, Department of Molecules & Materials, MESA+ Institute, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands.
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Barbosa JC, Gonçalves S, Makowski M, Silva ÍC, Caetano T, Schneider T, Mösker E, Süssmuth RD, Santos NC, Mendo S. Insights into the mode of action of the two-peptide lantibiotic lichenicidin. Colloids Surf B Biointerfaces 2022; 211:112308. [PMID: 34973602 DOI: 10.1016/j.colsurfb.2021.112308] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 11/30/2022]
Abstract
Lantibiotics are promising candidates to address the worldwide problem of antibiotic resistance. They belong to a class of natural compounds exhibiting strong activity against clinically relevant Gram-positive bacterial strains, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococci (VRE). Lichenicidin is a class II two-peptide lantibiotic. The presence of the two mature peptides, Bliα and Bliβ, is necessary for full activity against target bacteria. This work aims at clarifying the synergistic activity of both peptides in their interaction with the target membranes. The effect of lichenicidin was tested against S. aureus cells and large unilamellar vesicles. Lichenicidin increases the net surface charge of S. aureus, as shown by zeta-potential measurements, without reaching electroneutralization. In addition, lichenicidin causes cell surface perturbations that culminate in the leakage of its internal contents, as observed by atomic force microscopy. Bliα seems to have low affinity for S. aureus, however, it contributes to increase the affinity of Bliβ, because together they present higher affinity than separately. In contrast, Bliα seems to provide an anchoring site for lichenicidin in lipid II-containing membranes. Interestingly, Bliβ alone can induce high levels of membrane leakage, but this effect appears to be faster in the presence of Bliα. Based on this information, we propose a mechanism of action of lichenicidin.
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Affiliation(s)
- Joana C Barbosa
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
| | - Sónia Gonçalves
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Marcin Makowski
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Ítala C Silva
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Tânia Caetano
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
| | - Tanja Schneider
- Institute for Pharmaceutical Microbiology, University of Bonn, Bonn, Germany.
| | - Eva Mösker
- Institut für Chemie, Technische Universität Berlin, Berlin, Germany.
| | | | - Nuno C Santos
- Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, Av. Prof. Egas Moniz, Lisbon, Portugal.
| | - Sónia Mendo
- Department of Biology & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Aveiro, Portugal.
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Nanoparticle tracking analysis and statistical mixture distribution analysis to quantify nanoparticle-vesicle binding. J Colloid Interface Sci 2022; 615:50-58. [PMID: 35123359 DOI: 10.1016/j.jcis.2022.01.141] [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: 04/21/2021] [Revised: 01/16/2022] [Accepted: 01/22/2022] [Indexed: 11/21/2022]
Abstract
Nanoparticle tracking analysis (NTA) is a single particle tracking technique that in principle provides a more direct measure of particle size distribution compared to dynamic light scattering (DLS). Here, we demonstrate how statistical mixture distribution analysis can be used in combination with NTA to quantitatively characterize the amount and extent of particle binding in a mixture of nanomaterials. The combined approach is used to study the binding of gold nanoparticles to two types of phospholipid vesicles, those containing and lacking the model ion channel peptide gramicidin A. This model system serves as both a proof of concept for the method and a demonstration of the utility of the approach in studying nano-bio interactions. Two diffusional models (Stokes-Einstein and Kirkwood-Riseman) were compared in the determination of particle size, extent of binding, and nanoparticle:vesicle binding ratios for each vesicle type. The combination of NTA and statistical mixture distributions is shown to be a useful method for quantitative assessment of the extent of binding between particles and determination of binding ratios.
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Pabisz P, Bazak J, Girotti AW, Korytowski W. Anti-steroidogenic effects of cholesterol hydroperoxide trafficking in MA-10 Leydig cells: Role of mitochondrial lipid peroxidation and inhibition thereof by selenoperoxidase GPx4. Biochem Biophys Res Commun 2022; 591:82-87. [PMID: 34999258 DOI: 10.1016/j.bbrc.2021.12.117] [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: 11/05/2021] [Revised: 12/29/2021] [Accepted: 12/30/2021] [Indexed: 11/30/2022]
Abstract
Steroid hormone synthesis in steroidogenic cells requires cholesterol (Ch) delivery to/into mitochondria via StAR family trafficking proteins. In previous work, we discovered that 7-OOH, an oxidative stress-induced cholesterol hydroperoxide, can be co-trafficked with Ch, thereby causing mitochondrial redox damage/dysfunction. We now report that exposing MA-10 Leydig cells to Ch/7-OOH-containing liposomes (SUVs) results in (i) a progressive increase in fluorescence probe-detected lipid peroxidation in mitochondrial membranes, (ii) a reciprocal decrease in immunoassay-detected progesterone generation, and ultimately (iii) loss of cell viability with increasing 7-OOH concentration. No significant effects were observed with a phospholipid hydroperoxide over the same concentration range. Glutathione peroxidase GPx4, which can catalyze lipid hydroperoxide detoxification, was detected in mitochondria of MA-10 cells. Mitochondrial lipid peroxidation and progesterone shortfall were exacerbated when MA-10 cells were treated with Ch/7-OOH in the presence of RSL3, a GPx4 inhibitor. However, Ebselen, a selenoperoxidase mimetic, substantially reduced RSL3's negative effects, thereby partially rescuing the cells from peroxidative damage. These findings demonstrate that co-trafficking of oxidative stress-induced 7-OOH can disable steroidogenesis, and that GPx4 can significantly protect against this.
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Affiliation(s)
- Pawel Pabisz
- Department of Biophysics, Jagiellonian University, Krakow, Poland
| | - Jerzy Bazak
- Department of Biophysics, Jagiellonian University, Krakow, Poland
| | - Albert W Girotti
- Department of Biochemistry, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
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