1
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Othman HO, Anwer ET, Ali DS, Hassan RO, Mahmood EE, Ahmed RA, Muhammad RF, Smaoui S. Recent advances in carbon quantum dots for gene delivery: A comprehensive review. J Cell Physiol 2024. [PMID: 38454776 DOI: 10.1002/jcp.31236] [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: 01/22/2024] [Revised: 02/16/2024] [Accepted: 02/22/2024] [Indexed: 03/09/2024]
Abstract
Gene therapy is a revolutionary technology in healthcare that provides novel therapeutic options and has immense potential in addressing genetic illnesses, malignancies, and viral infections. Nevertheless, other obstacles still need to be addressed regarding safety, ethical implications, and technological enhancement. Nanotechnology and gene therapy fields have shown significant promise in transforming medical treatments by improving accuracy, effectiveness, and personalization. This review assesses the possible uses of gene therapy, its obstacles, and future research areas, specifically emphasizing the creative combination of gene therapy and nanotechnology. Nanotechnology is essential for gene delivery as it allows for the development of nano-scale carriers, such as carbon quantum dots (CQDs), which may effectively transport therapeutic genes into specific cells. CQDs exhibit distinctive physicochemical characteristics such as small size, excellent stability, and minimal toxicity, which render them highly favorable for gene therapy applications. The objective of this study is to review and describe the current advancements in the utilization of CQDs for gene delivery. Additionally, it intends to assess existing research, explore novel applications, and identify future opportunities and obstacles. This study offers a thorough summary of the current state and future possibilities of using CQDs for gene delivery. Combining recent research findings highlights the potential of CQDs to revolutionize gene therapy and its delivery methods.
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Affiliation(s)
- Hazha Omar Othman
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Erbil, Iraq
- Department of Pharmaceutics, Faculty of Pharmacy, Tishk International University, Erbil, Iraq
| | - Esra Tariq Anwer
- Department of Pharmaceutics, Faculty of Pharmacy, Tishk International University, Erbil, Iraq
| | - Diyar Salahuddin Ali
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Erbil, Iraq
- Department of Pharmacy, College of Pharmacy, Knowledge University, Erbil, Iraq
| | - Rebwar Omar Hassan
- Department of Chemistry, College of Science, Salahaddin University-Erbil, Erbil, Iraq
- Department of Radiological Imaging Technology, College of Health Technology, Cihan University-Erbil, Iraq
| | - Elnaz Ehsan Mahmood
- Department of Pharmaceutics, Faculty of Pharmacy, Tishk International University, Erbil, Iraq
| | - Rayan Abubakir Ahmed
- Department of Pharmaceutics, Faculty of Pharmacy, Tishk International University, Erbil, Iraq
| | | | - Slim Smaoui
- Laboratory of Microbial and Enzymatic Biotechnologies and Biomolecules, Center of Biotechnology of Sfax (CBS), University of Sfax, Sfax, Tunisia
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2
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Predicting Transiently Expressed Protein Yields: Comparison of Transfection Methods in CHO and HEK293. Pharmaceutics 2022; 14:pharmaceutics14091949. [PMID: 36145697 PMCID: PMC9505259 DOI: 10.3390/pharmaceutics14091949] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/08/2022] [Accepted: 09/12/2022] [Indexed: 12/23/2022] Open
Abstract
Therapeutic proteins are currently at the apex of innovation in pharmaceutical medicine. However, their industrial production is technically challenging and improved methods for transient transfection of mammalian cell cultures are necessary. We aimed to find a fast, microliter-scale transfection assay that allows the prediction of protein expression in the transient production settings. We used an array of lipid, polymeric and cell-penetrating peptide transfection reagents, and compared their performance in various high throughput transfection assays to their performance in protein (antibody) expression in professional protein-producer cell lines. First, we show that some of the most frequently used microliter-scale transfection efficacy assays fail to predict performance in the protein production in milliliter and liter scale settings. We found that CHO suspension culture post-transfection EGFP(+) population and SEAP quantitation correlate with large-scale protein production, whereas the adhesion culture assays and transfection of pLuc are non-predictive. Second, we demonstrated that cell-penetrating peptide-based transfection achieves significantly higher protein yields compared to PEI and lipoplex methods in both CHO and HEK293 producer cell lines. In this work we demonstrate a CPP-based transient protein expression approach that significantly outperformed the current industry standard workhorse method of PEI.
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3
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Hadianamrei R, Wang J, Brown S, Zhao X. Rationally designed cationic amphiphilic peptides for selective gene delivery to cancer cells. Int J Pharm 2022; 617:121619. [PMID: 35218898 DOI: 10.1016/j.ijpharm.2022.121619] [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: 10/25/2021] [Revised: 02/14/2022] [Accepted: 02/21/2022] [Indexed: 10/19/2022]
Abstract
Gene therapy has gained increasing attention as an alternative to pharmacotherapy for treatment of various diseases. The extracellular and intracellular barriers to gene delivery necessitate the use of gene vectors which has led to the development of myriads of gene delivery systems. However, many of these gene delivery systems have pitfalls such as low biocompatibility, low loading efficiency, low transfection efficiency, lack of tissue selectivity and high production costs. Herein, we report the development of a new series of short cationic amphiphilic peptides with anticancer activity for selective delivery of small interfering RNA (siRNA) and antisense oligodeoxynucleotides (ODNs) to cancer cells. The peptides consist of alternating dyads of hydrophobic (isoleucine (I) or leucine (L)) and hydrophilic (arginine (R) or lysine (L)) amino acids. The peptides exhibited higher preference for transfection of HCT 116 colorectal cancer cells compared to human dermal fibroblasts (HDFs) and induced higher level of gene silencing in the cancer cells. The nucleic acid complexation and transfection efficiency of the peptides was a function of their secondary structure, their hydrophobicity and their C-terminal amino acid. The peptides containing L in their hydrophobic domain formed stronger complexes with siRNA and successfully delivered it to the cancer cells but were unable to release their cargo inside the cells and therefore could not induce any gene silencing. On the contrary, the peptides containing I in their hydrophobic domain were able to release their associated siRNA and induce considerable gene silencing in cancer cells. The peptides exhibited higher selectivity for colorectal cancer cells and induced less gene silencing in fibroblasts compared to the lipid-based commercial transfection reagent DharmaFECT™ 1. The results from this study can serve as a tool for rational design of new peptide-based gene vectors for high selective gene delivery to cancer cells.
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Affiliation(s)
- Roja Hadianamrei
- Department of Chemical and Biological Engineering, University of Sheffield, S1 3JD, UK
| | - Jiqian Wang
- Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266555, China
| | - Stephen Brown
- Department of Biomedical Science, University of Sheffield, S10 2TN, UK
| | - Xiubo Zhao
- Department of Chemical and Biological Engineering, University of Sheffield, S1 3JD, UK; School of Pharmacy, Changzhou University, Changzhou 213164, China.
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4
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Hadianamrei R, Zhao X. Current state of the art in peptide-based gene delivery. J Control Release 2022; 343:600-619. [PMID: 35157938 DOI: 10.1016/j.jconrel.2022.02.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/14/2022]
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5
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Marques PE, Vandendriessche S, de Oliveira THC, Crijns H, Lopes ME, Blanter M, Schuermans S, Yu K, Poosti F, Vanheule V, Janssens R, Boff D, Kungl AJ, Menezes GB, Teixeira MM, Proost P. Inhibition of Drug-Induced Liver Injury in Mice Using a Positively Charged Peptide That Binds DNA. Hepatol Commun 2021; 5:1737-1754. [PMID: 34532999 PMCID: PMC8485890 DOI: 10.1002/hep4.1759] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 04/30/2021] [Accepted: 05/11/2021] [Indexed: 12/19/2022] Open
Abstract
Hepatic cell death occurs in response to diverse stimuli such as chemical and physical damage. The exposure of intracellular contents such as DNA during necrosis induces a severe inflammatory response that has yet to be fully explored therapeutically. Here, we sought means to neutralize the ability of extracellular DNA to induce deleterious tissue inflammation when drug-induced liver injury had already ensued. DNA exposure and inflammation were investigated in vivo in drug-induced liver injury using intravital microscopy. The necrotic DNA debris was studied in murine livers in vivo and in DNA debris models in vitro by using a positively charged chemokine-derived peptide (MIG30; CXCL9[74-103]). Acetaminophen-induced liver necrosis was associated with massive DNA accumulation, production of CXC chemokines, and neutrophil activation inside the injured tissue. The MIG30 peptide bound the healthy liver vasculature and, to a much greater extent, to DNA-rich necrotic tissue. Moreover, MIG30 bound extracellular DNA directly in vivo in a charge-dependent manner and independently of glycosaminoglycans and chemokines. Post-treatment of mice with MIG30 reduced mortality, liver damage, and inflammation significantly. These effects were not observed with a control peptide that does not bind DNA. Mechanistically, MIG30 inhibited the interaction between DNA and histones, and promoted the dissociation of histones from necrotic debris. MIG30 also inhibited the pro-inflammatory effect of CpG DNA, as measured by a reduction in CXCL8 production, indicating that MIG30 disturbs the ability of DNA to induce hepatic inflammation. Conclusion: The use of DNA-binding peptides reduces necrotic liver injury and inflammation, even at late timepoints.
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Affiliation(s)
- Pedro E Marques
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Sofie Vandendriessche
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Thiago H C de Oliveira
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Helena Crijns
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Mateus E Lopes
- Center for Gastrointestinal BiologyDepartment of MorphologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Marfa Blanter
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Sara Schuermans
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Karen Yu
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Fariba Poosti
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Vincent Vanheule
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Rik Janssens
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
| | - Daiane Boff
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium.,Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Andreas J Kungl
- Department of Pharmaceutical ChemistryInstitute of Pharmaceutical SciencesKarl-Franzens UniversitätGrazAustria
| | - Gustavo B Menezes
- Center for Gastrointestinal BiologyDepartment of MorphologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Mauro M Teixeira
- Immunopharmacology LaboratoryDepartment of Biochemistry and ImmunologyUniversidade Federal de Minas GeraisBelo HorizonteMinas GeraisBrazil
| | - Paul Proost
- Laboratory of Molecular ImmunologyDepartment of Microbiology, Immunology and TransplantationRega Institute for Medical ResearchKU LeuvenLeuvenBelgium
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6
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Ahmed M. Peptides, polypeptides and peptide–polymer hybrids as nucleic acid carriers. Biomater Sci 2017; 5:2188-2211. [DOI: 10.1039/c7bm00584a] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Peptide, polypeptide and polymer–peptide hybrid based nucleic acid therapeutics (NAT).
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Affiliation(s)
- Marya Ahmed
- Department of Chemistry & School of Sustainable Design and Engineering
- University of Prince Edward Island
- Charlottetown
- Canada
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7
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Gene introduction into the mitochondria of Arabidopsis thaliana via peptide-based carriers. Sci Rep 2015; 5:7751. [PMID: 25583214 PMCID: PMC4291575 DOI: 10.1038/srep07751] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 12/10/2014] [Indexed: 11/25/2022] Open
Abstract
Available methods in plant genetic transformation are nuclear and plastid transformations because similar procedures have not yet been established for the mitochondria. The double membrane and small size of the organelle, in addition to its large population in cells, are major obstacles in mitochondrial transfection. Here we report the intracellular delivery of exogenous DNA localized to the mitochondria of Arabidopsis thaliana using a combination of mitochondria-targeting peptide and cell-penetrating peptide. Low concentrations of peptides were sufficient to deliver DNA into the mitochondria and expression of imported DNA reached detectable levels within a short incubation period (12 h). We found that electrostatic interaction with the cell membrane is not a critical factor for complex internalization, instead, improved intracellular penetration of mitochondria-targeted complexes significantly enhanced gene transfer efficiency. Our results delineate a simple and effective peptide-based method, as a starting point for the development of more sophisticated plant mitochondrial transfection strategies.
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8
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Zhiryakova MV, Izumrudov VA. Water-Soluble Polyelectrolyte Complexes of Astramol Poly(propyleneimine) Dendrimers with Poly(methacrylate) Anion. J Phys Chem B 2014; 118:13760-9. [DOI: 10.1021/jp508960h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marina V. Zhiryakova
- Chemistry
Department, M. V. Lomonosov Moscow State University, Leninskiye
gory, Moscow 119991, Russia
| | - Vladimir A. Izumrudov
- Chemistry
Department, M. V. Lomonosov Moscow State University, Leninskiye
gory, Moscow 119991, Russia
- A.
N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russia
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9
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Zhiryakova MV, Izumrudov VA. Interaction of Astramol Poly(propyleneimine) Dendrimers with DNA and Poly(methacrylate) Anion in Water and Water–Salt Solutions. J Phys Chem B 2014; 118:8819-26. [DOI: 10.1021/jp502953y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marina V. Zhiryakova
- Chemistry
Department, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
| | - Vladimir A. Izumrudov
- Chemistry
Department, M.V. Lomonosov Moscow State University, Moscow 119991, Russia
- A.N.
Nesmeyanov Institute of Organoelement Compounds of Russian Academy of Sciences, Vavilova St. 28, Moscow 119991, Russia
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10
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Gowda NM, Wu X, Gowda DC. The nucleosome (histone-DNA complex) is the TLR9-specific immunostimulatory component of Plasmodium falciparum that activates DCs. PLoS One 2011; 6:e20398. [PMID: 21687712 PMCID: PMC3110622 DOI: 10.1371/journal.pone.0020398] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Accepted: 05/01/2011] [Indexed: 11/24/2022] Open
Abstract
The systemic clinical symptoms of Plasmodium falciparum infection such as fever and chills correspond to the proinflammatory cytokines produced in response to the parasite components released during the synchronized rupture of schizonts. We recently demonstrated that, among the schizont-released products, merozoites are the predominant components that activate dendritic cells (DCs) by TLR9-specific recognition to induce the maturation of cells and to produce proinflammatory cytokines. We also demonstrated that DNA is the active constituent and that formation of a DNA-protein complex is essential for the entry of parasite DNA into cells for recognition by TLR9. However, the nature of endogenous protein-DNA complex in the parasite is not known. In this study, we show that parasite nucleosome constitute the major protein-DNA complex involved in the activation of DCs by parasite nuclear material. The parasite components were fractionated into the nuclear and non-nuclear materials. The nuclear material was further fractionated into chromatin and the proteins loosely bound to chromatin. Polynucleosomes and oligonucleosomes were prepared from the chromatin. These were tested for their ability to activate DCs obtained by the FLT3 ligand differentiation of bone marrow cells from the wild type, and TLR2(-/-), TLR9(-/-) and MyD88(-/-) mice. DCs stimulated with the nuclear material and polynucleosomes as well as mono- and oligonucleosomes efficiently induced the production of proinflammatory cytokines in a TLR9-dependent manner, demonstrating that nucleosomes (histone-DNA complex) represent the major TLR9-specific DC-immunostimulatory component of the malaria parasite nuclear material. Thus, our data provide a significant insight into the activation of DCs by malaria parasites and have important implications for malaria vaccine development.
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Affiliation(s)
- Nagaraj M. Gowda
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - Xianzhu Wu
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
| | - D. Channe Gowda
- Department of Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania, United States of America
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11
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Barbalat R, Ewald SE, Mouchess ML, Barton GM. Nucleic acid recognition by the innate immune system. Annu Rev Immunol 2011; 29:185-214. [PMID: 21219183 DOI: 10.1146/annurev-immunol-031210-101340] [Citation(s) in RCA: 437] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Receptors of the innate immune system recognize conserved microbial features and provide key signals that initiate immune responses. Multiple transmembrane and cytosolic receptors have evolved to recognize RNA and DNA, including members of the Toll-like receptor and RIG-I-like receptor families and several DNA sensors. This strategy enables recognition of a broad range of pathogens; however, in some cases, this benefit is weighed against the cost of potential self recognition. Recognition of self nucleic acids by the innate immune system contributes to the pathology associated with several autoimmune or autoinflammatory diseases. In this review, we highlight our current understanding of nucleic acid sensing by innate immune receptors and discuss the regulatory mechanisms that normally prevent inappropriate responses to self.
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Affiliation(s)
- Roman Barbalat
- Division of Immunology & Pathogenesis, Department of Molecular and Cell Biology, University of California, Berkeley, 94720-3200, USA
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12
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Baoum AA, Berkland C. Calcium condensation of DNA complexed with cell-penetrating peptides offers efficient, noncytotoxic gene delivery. J Pharm Sci 2010; 100:1637-42. [PMID: 21374602 DOI: 10.1002/jps.22407] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 10/25/2010] [Accepted: 10/26/2010] [Indexed: 01/14/2023]
Abstract
Drug delivery strategies using cell-penetrating peptides (CPPs) have been widely explored to improve the intracellular delivery of a large number of cargo molecules. Electrostatic complexation of plasmid DNA using CPPs has been less explored due to the relatively large complexes formed and the low levels of gene expression achieved when using these low-molecular-weight polycations as DNA condensing agents. Here, condensing nascent CPP polyplexes using CaCl(2) produced small and stable nanoparticles leading to gene expression levels higher than observed for control polyethylenimine gene vectors. This simple formulation approach showed negligible cytotoxicity in A549 lung epithelial cells and maintained particle size and transfection efficiency even in the presence of serum.
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Affiliation(s)
- Abdulgader A Baoum
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, Kansas, USA
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13
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Guiffo-Soh G, Hernández B, Coïc YM, Boukhalfa-Heniche FZ, Fadda G, Ghomi M. Vibrational Analysis of Amino Acids and Short Peptides in Hydrated Media. 3. Successive KL Repeats Induce Highly Stable β-Strands Capable of Forming Non-H-Bonded Aggregates. J Phys Chem B 2008; 112:1282-9. [DOI: 10.1021/jp0767967] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guy Guiffo-Soh
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Belén Hernández
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Yves-Marie Coïc
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Fatima-Zohra Boukhalfa-Heniche
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Giulia Fadda
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Mahmoud Ghomi
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
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14
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Zhiryakova MV, Izumrudov VA. A fluorescent method based on the competitive displacement of intercalated dyes for the study of DNA polyelectrolyte complexes: Advantages and prospects. POLYMER SCIENCE SERIES A 2007. [DOI: 10.1134/s0965545x07120061] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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YOYO as a Dye to Track Penetration of LK15 DNA Complexes in Spheroids: Use and Limits. J Fluoresc 2007; 18:155-61. [DOI: 10.1007/s10895-007-0254-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2007] [Accepted: 09/04/2007] [Indexed: 10/22/2022]
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16
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Guiffo-Soh G, Hernández B, Coïc YM, Boukhalfa-Heniche FZ, Ghomi M. Vibrational Analysis of Amino Acids and Short Peptides in Hydrated Media. II. Role of KLLL Repeats To Induce Helical Conformations in Minimalist LK-Peptides. J Phys Chem B 2007; 111:12563-72. [DOI: 10.1021/jp074264k] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guy Guiffo-Soh
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Belén Hernández
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Yves-Marie Coïc
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Fatima-Zohra Boukhalfa-Heniche
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
| | - Mahmoud Ghomi
- UMR CNRS 7033, BioMoCeTi, UFR SMBH, Université Paris 13, 74 rue Marcel Cachin, 93017 Bobigny cedex, France, Université Pierre et Marie Curie, Case 138, 4 Place Jussieu, 75252 Paris cedex 05, France, and Unité de Chimie Organique, Institut Pasteur, 28 rue du Docteur Roux, 75724 Paris cedex 15, France
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17
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Lande R, Gregorio J, Facchinetti V, Chatterjee B, Wang YH, Homey B, Cao W, Wang YH, Su B, Nestle FO, Zal T, Mellman I, Schröder JM, Liu YJ, Gilliet M. Plasmacytoid dendritic cells sense self-DNA coupled with antimicrobial peptide. Nature 2007; 449:564-9. [PMID: 17873860 DOI: 10.1038/nature06116] [Citation(s) in RCA: 1316] [Impact Index Per Article: 77.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Accepted: 07/26/2007] [Indexed: 11/08/2022]
Abstract
Plasmacytoid dendritic cells (pDCs) sense viral and microbial DNA through endosomal Toll-like receptors to produce type 1 interferons. pDCs do not normally respond to self-DNA, but this restriction seems to break down in human autoimmune disease by an as yet poorly understood mechanism. Here we identify the antimicrobial peptide LL37 (also known as CAMP) as the key factor that mediates pDC activation in psoriasis, a common autoimmune disease of the skin. LL37 converts inert self-DNA into a potent trigger of interferon production by binding the DNA to form aggregated and condensed structures that are delivered to and retained within early endocytic compartments in pDCs to trigger Toll-like receptor 9. Thus, our data uncover a fundamental role of an endogenous antimicrobial peptide in breaking innate tolerance to self-DNA and suggest that this pathway may drive autoimmunity in psoriasis.
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Affiliation(s)
- Roberto Lande
- Department of Immunology, M. D. Anderson Cancer Center, University of Texas, Houston, Texas 77030, USA
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18
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Hernández B, Boukhalfa-Heniche FZ, Seksek O, Coïc YM, Ghomi M. Secondary conformation of short lysine- and leucine-rich peptides assessed by optical spectroscopies: effect of chain length, concentration, solvent, and time. Biopolymers 2006; 81:8-19. [PMID: 16134172 DOI: 10.1002/bip.20366] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Solution secondary structures of three synthetic cationic peptides, currently used in antisense oligonucleotide delivery into living cells, have been analyzed by means of circular dichroism (CD) and Raman scattering in different buffers as a function of concentration and time. All three peptides are of minimalist conception, i.e., formed by only two types of amino acids (leucine: L and lysine: K). Two of these peptides contain 15 aminoacids: N(ter)- KLLKLLLKLLLKLLK (L(10)K(5)), N(ter)-KLKLKLKLKLKLKLK (L(7)K(8)), and the third one has only 9 residues: N(ter)-KLKLKLKLK (L(4)K(5)). The conformational behavior of the 15-mers in pure water differs considerably one from another. Although both of them are initially disordered in the 50-350 microM range, L(10)K(5) gradually undergoes a disordered to alpha-helix transition for molecular concentrations above 100 microM. In all other solvents used, L(10)K(5) adopts a stable alpha-helical conformation. In methanol and methanol/Tris mixture, nonnative alpha-helices can be induced in both KL-alternating peptides, i.e., L(7)K(8) and L(4)K(5). However, in major cases and with a time delay depending on peptide concentration, beta-like structures can be gradually formed in both solutions. In PBS and methanol/PBS mixture, the tendency for L(7)K(8) and L(4)K(5) is to form structures belonging to beta-family. A discussion has been undertaken on the effect of counterions as well as their nature in the stabilization of ordered structures in both KL-alternating peptides.
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Affiliation(s)
- Belén Hernández
- UMR CNRS 7033, BioMoCeTi, Université Pierre et Marie Curie, Paris, France
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19
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Studies of the interaction between poly(diallyldimethyl ammonium chloride) and DNA by spectroscopic methods. Colloids Surf A Physicochem Eng Asp 2004. [DOI: 10.1016/j.colsurfa.2003.11.030] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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20
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Satoh S, Yamada M, Nomizu M, Nishi N. Accumulation-Exclusion Combined System for the DNA-Binding Harmful Chemicals with Insolubilized DNA. Polym J 2003. [DOI: 10.1295/polymj.35.872] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Affiliation(s)
- P. C. A. Barreleiro
- Center for Chemistry and Chemical Engineering, Physical Chemistry 1, University of Lund, P.O. Box 124, 221 00 Lund, Sweden
| | - B. Lindman
- Center for Chemistry and Chemical Engineering, Physical Chemistry 1, University of Lund, P.O. Box 124, 221 00 Lund, Sweden
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22
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Huang W, Zhang Z, Han X, Tang J, Wang J, Dong S, Wang E. Liposome-mediated conformation transition of DNA detected by molecular probe: methyl green. Bioelectrochemistry 2003; 59:21-7. [PMID: 12699815 DOI: 10.1016/s1567-5394(02)00185-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Recent studies have focused on the structural features of DNA-lipid assemblies. In this paper, we take methyl green (MG) as a probe molecule to detect the conformational change of DNA molecule induced by dimethyldioctadecylammonium bromide (DDAB) liposomes before the condensation process of DNA begins. DDAB-induced DNA topology changes were investigated by cyclic voltammetry (CV), circular dichroism (CD) and UV-VIS spectrometry. We find that upon binding to DNA, positively charged liposomes induce a conformational transition of DNA molecules from the native B-form to the C motif. Conformational transition in DNA results in the binding modes of MG to DNA, changing and being isolated from DNA to the solution. More stable complexes are formed between DNA and DDAB. That is also proved by the melting study of DNA.
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Affiliation(s)
- Weimin Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, China
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23
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SITOHY MAHMOUD, CHOBERT JEANMARC, GAUDIN JEANCHARLES, RENAC TIPHAINE, HAERTLÉ THOMAS. WHEN POSITIVELY CHARGED MILK PROTEINS CAN BIND TO DNA. J Food Biochem 2002. [DOI: 10.1111/j.1745-4514.2002.tb00770.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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24
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Matsuno H, Niikura K, Okahata Y. Design and characterization of asparagine- and lysine-containing alanine-based helical peptides that bind selectively to A.T base pairs of oligonucleotides immobilized on a 27 mhz quartz crystal microbalance. Biochemistry 2001; 40:3615-22. [PMID: 11297428 DOI: 10.1021/bi001699o] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have systematically designed and synthesized six kinds of 16-17 mer alanine-based peptides containing four to six lysine (K) and one to four asparagine (N) residues to achieve the selective binding to A.T base pairs of DNA duplexes. The position and number of K and N residues were changed in the helical structure according to common features of the DNA-binding proteins, in which K and N residues are expected to interact electrostatically with phosphate groups and to interact with A.T base pairs by hydrogen bonding, respectively. The time courses of binding of these peptides to dA(30).dT(30) and dG(30).dC(30) duplexes immobilized on a 27 MHz quartz crystal microbalance (QCM) were studied in 10 mM phosphate buffer (pH 7.5) and 40 mM NaCl at 10 degrees C. The maximum binding amounts (Deltam(max)) on a nanogram scale and binding constants (K(a)) could be obtained from the frequency decrease (mass increase) of the oligonucleotide-immobilized QCM. The conformation changes of the peptides upon binding to DNAs were monitored by circular dichroism (CD) spectroscopy. The four properly arranged N residues in the six-cationic K peptide, K6N4(d), resulted in a 5-fold higher affinity for A.T base pairs (K(a) = 5.9 x 10(5) M(-1)) than for G.C base pairs (K(a) = 1.2 x 10(5) M(-1)), and alpha-helices were clearly promoted by the binding to A.T base pairs from CD spectral changes.
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Affiliation(s)
- H Matsuno
- Department of Biomolecular Engineering, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama 226-8501, Japan
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25
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Izumrudov VA, Zhiryakova MV, Kudaibergenov SE. Controllable stability of DNA-containing polyelectrolyte complexes in water-salt solutions. Biopolymers 2000; 52:94-108. [PMID: 10898855 DOI: 10.1002/1097-0282(1999)52:2<94::aid-bip3>3.0.co;2-o] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Destruction of polyelectrolyte complexes (PECs) formed by DNA and synthetic polyamines of different structures was carried out by addition of low molecular weight electrolyte to PEC solution at different pHs. The dissociation was studied by the fluorescence quenching technique using the ability of cationic dye ethidium bromide to intercalate into free sites of DNA double helix followed by ignition of ethidium fluorescence. Structure of amine groups of the polycation was shown to be a decisive factor of PEC stability. PECs formed by polycations with quaternary amine groups, i.e., poly(N-alkyl-4-vinylpyridinium) bromides, poly(N, N-dimethyldiallylammonium) chloride, and ionene bromide, were pH independent and the least tolerant to destruction by the added salt. Primary amine groups of basic polypeptides poly-L-lysine hydrobromide and poly-L-arginine hydrochloride as well as synthetic polycation poly(vinyl-2-aminoethyl ether) provided the best stability of PECs in water-salt solutions under wide pH range. Moderate and pH-dependent stability was revealed for PECs included poly(N,N-dimethylaminoethylmethacrylate) with tertiary amine groups in the chain or branched poly(ethylenimine) with primary, secondary, and tertiary amine groups in the molecule. The data obtained appear to be the basis for design of DNA-containing PECs with given and controllable stability. The design may be accomplished not only by proper choice of polyamine of one or another type, but by using of tailor-made polycations with given composition of amine groups of different structure in the chain as well. Thus, quaternization of a part of tertiary amine groups of poly(N, N-dimethylaminoethylmethacrylate) resulted in expected decrease of stability of DNA-containing PECs in water-salt solutions. The destruction of PEC formed by random copolymer of 4-vinylpyridine and N-ethyl-4-vinylpyridinium bromide was pH sensitive and could be performed under pH and ionic strength closed to the physiological conditions. This result appears to be particularly promising for addressing DNA packed in PEC species to the target cell.
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Affiliation(s)
- V A Izumrudov
- Chemistry Department, Moscow State University, Russia
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26
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Chenevier P, Veyret B, Roux D, Henry-Toulmé N. Interaction of cationic colloids at the surface of J774 cells: a kinetic analysis. Biophys J 2000; 79:1298-309. [PMID: 10968993 PMCID: PMC1301025 DOI: 10.1016/s0006-3495(00)76383-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We have characterized the binding of multilamellar colloids to J774 cells. Cationic colloids were shown to bind much more efficiently than neutral ones. Particle uptake by cells was followed by flow cytometry and fluorescence microscopy. Analysis of the kinetics of uptake of cationic particles indicated that binding on the cell surface occurred with two characteristic times. Analysis of the dissociation properties allowed discriminating between several alternative models for adsorption and led us to propose a mechanism that involved two independent classes of binding sites on the cell surface. One class of sites appeared to be governed by a classic mass action law describing a binding equilibrium. The other sites were populated irreversibly by particles made of 10% cationic lipids. This was observed in the absence of endocytosis, under conditions where both the equilibrium and the irreversible binding occurred at the cell surface. We determined the rate constants for the different steps. We found that the reversible association occurred with a characteristic time of the order of tens of seconds, whereas the irreversible binding took a hundred times longer. The presence of serum proteins in the incubation medium did not drastically affect the final uptake of the particles. In contrast, the capture of the particles by cells significantly dropped when the fraction of positively charged lipids contained in the colloids was decreased from 10% to 5%. Finally, the results will be discussed within a comprehensive model where cationic particles find labile binding sites in the volume of the pericellular network (glycocalyx and extracellular matrix) and less-accessible irreversible binding sites at the cell membrane itself.
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Affiliation(s)
- P Chenevier
- Centre de Recherche Paul Pascal, CNRS, 33600 Pessac, France
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27
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Castano S, Desbat B, Laguerre M, Dufourcq J. Structure, orientation and affinity for interfaces and lipids of ideally amphipathic lytic LiKj(i=2j) peptides. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1416:176-94. [PMID: 9889361 DOI: 10.1016/s0005-2736(98)00220-x] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The behavior of lytic ideally amphipathic peptides of generic composition LiKj(i=2j) and named LKn, n=i+j, is investigated in situ by the monolayer technique combined with the recently developed polarization modulation IR spectroscopy (PMIRRAS). A change in the secondary structure occurs versus peptide length. Peptides longer than 12 residues fold into alpha-helices at interfaces as expected from their design, while enough shorter peptides, from 9 down to 5 residues, form intermolecular antiparallel beta-sheets. Analysis of experimental and calculated PMIRRAS spectra in the amide I and II regions show that peptides are flat oriented at the interfaces. Structures and orientation are preserved whatever the nature of the interface, air/water or DMPC monolayer, and the lateral pressure. Peptide partition constants, KaffPi, are estimated from isobar surface increases of DMPC monolayers. They strongly increase when Pi decreases from 30 mN/m to 8 mN/m and they vary with peptide length with an optimum for 12 residues. This non-monotonous dependence fits with data obtained in bilayers and follows the hemolytic activity of the peptides. Lipid perturbations due to peptide insertion essentially detected on the PO4- and CO bands indicate disorder of the lipid head groups. Lysis induced on membranes by such peptides is proposed to first result from their flat asymmetric insertion.
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Affiliation(s)
- S Castano
- Centre de Recherche Paul Pascal, CNRS, Avenue A. Schweitzer, 33600, Pessac, France
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