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Henser-Brownhill T, Martin L, Samangouei P, Ladak A, Apostolidou M, Nagel B, Kwok A. In Silico Screening Accelerates Nanocarrier Design for Efficient mRNA Delivery. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2401935. [PMID: 38837626 DOI: 10.1002/advs.202401935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/11/2024] [Indexed: 06/07/2024]
Abstract
Lipidic nanocarriers are a broad class of lipid-based vectors with proven potential for packaging and delivering emerging nucleic acid therapeutics. An important early step in the clinical development cycle is large-scale screening of diverse formulation libraries to assess particle quality and payload delivery efficiency. Due to the size of the screening space, this process can be both costly and time-consuming. To address this, computational models capable of predicting clinically relevant physio-chemical properties of dendrimer-lipid nanocarriers, along with their mRNA payload delivery efficiency in human cells are developed. The models are then deployed on a large theoretical nanocarrier pool consisting of over 4.5 million formulations. Top predictions are synthesised for validation using cell-based assays, leading to the discovery of a high quality, high performing, candidate. The methods reported here enable rapid, high-throughput, in silico pre-screening for high-quality candidates, and have great potential to reduce the cost and time required to bring mRNA therapies to the clinic.
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Affiliation(s)
| | - Liam Martin
- Nuntius Therapeutics Limited, London, W10 5JJ, UK
| | | | - Aaqib Ladak
- Nuntius Therapeutics Limited, London, W10 5JJ, UK
| | | | - Benita Nagel
- Nuntius Therapeutics Limited, London, W10 5JJ, UK
| | - Albert Kwok
- Nuntius Therapeutics Limited, London, W10 5JJ, UK
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2
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Paul S, Verma S, Chen YC. Peptide Dendrimer-Based Antibacterial Agents: Synthesis and Applications. ACS Infect Dis 2024; 10:1034-1055. [PMID: 38428037 PMCID: PMC11019562 DOI: 10.1021/acsinfecdis.3c00624] [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: 11/16/2023] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/03/2024]
Abstract
Pathogenic bacteria cause the deaths of millions of people every year. With the development of antibiotics, hundreds and thousands of people's lives have been saved. Nevertheless, bacteria can develop resistance to antibiotics, rendering them insensitive to antibiotics over time. Peptides containing specific amino acids can be used as antibacterial agents; however, they can be easily degraded by proteases in vivo. To address these issues, branched peptide dendrimers are now being considered as good antibacterial agents due to their high efficacy, resistance to protease degradation, and low cytotoxicity. The ease with which peptide dendrimers can be synthesized and modified makes them accessible for use in various biological and nonbiological fields. That is, peptide dendrimers hold a promising future as antibacterial agents with prolonged efficacy without bacterial resistance development. Their in vivo stability and multivalence allow them to effectively target multi-drug-resistant strains and prevent biofilm formation. Thus, it is interesting to have an overview of the development and applications of peptide dendrimers in antibacterial research, including the possibility of employing machine learning approaches for the design of AMPs and dendrimers. This review summarizes the synthesis and applications of peptide dendrimers as antibacterial agents. The challenges and perspectives of using peptide dendrimers as the antibacterial agents are also discussed.
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Affiliation(s)
- Suchita Paul
- Institute
of Semiconductor Technology, National Yang
Ming Chiao Tung University, Hsinchu 300, Taiwan
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Sandeep Verma
- Department
of Chemistry, Indian Institute of Technology
Kanpur, Kanpur 208016, Uttar Pradesh, India
- Gangwal
School of Medical Sciences and Technology, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Yu-Chie Chen
- Institute
of Semiconductor Technology, National Yang
Ming Chiao Tung University, Hsinchu 300, Taiwan
- Department
of Applied Chemistry, National Yang Ming
Chiao Tung University, Hsinchu 300, Taiwan
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3
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García-Domínguez DJ, López-Enríquez S, Alba G, Garnacho C, Jiménez-Cortegana C, Flores-Campos R, de la Cruz-Merino L, Hajji N, Sánchez-Margalet V, Hontecillas-Prieto L. Cancer Nano-Immunotherapy: The Novel and Promising Weapon to Fight Cancer. Int J Mol Sci 2024; 25:1195. [PMID: 38256268 PMCID: PMC10816838 DOI: 10.3390/ijms25021195] [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: 12/28/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Cancer is a complex disease that, despite advances in treatment and the greater understanding of the tumor biology until today, continues to be a prevalent and lethal disease. Chemotherapy, radiotherapy, and surgery are the conventional treatments, which have increased the survival for cancer patients. However, the complexity of this disease together with the persistent problems due to tumor progression and recurrence, drug resistance, or side effects of therapy make it necessary to explore new strategies that address the challenges to obtain a positive response. One important point is that tumor cells can interact with the microenvironment, promoting proliferation, dissemination, and immune evasion. Therefore, immunotherapy has emerged as a novel therapy based on the modulation of the immune system for combating cancer, as reflected in the promising results both in preclinical studies and clinical trials obtained. In order to enhance the immune response, the combination of immunotherapy with nanoparticles has been conducted, improving the access of immune cells to the tumor, antigen presentation, as well as the induction of persistent immune responses. Therefore, nanomedicine holds an enormous potential to enhance the efficacy of cancer immunotherapy. Here, we review the most recent advances in specific molecular and cellular immunotherapy and in nano-immunotherapy against cancer in the light of the latest published preclinical studies and clinical trials.
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Affiliation(s)
- Daniel J. García-Domínguez
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
- Institute of Biomedicine of Seville, IBiS, 41013 Seville, Spain;
| | - Soledad López-Enríquez
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
| | - Gonzalo Alba
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
| | - Carmen Garnacho
- Department of Normal and Pathological Cytology and Histology, School of Medicine, University of Seville, 41009 Seville, Spain;
| | - Carlos Jiménez-Cortegana
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
| | - Rocío Flores-Campos
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
- Oncology Service, Department of Medicines, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain
| | - Luis de la Cruz-Merino
- Institute of Biomedicine of Seville, IBiS, 41013 Seville, Spain;
- Oncology Service, Department of Medicines, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain
- Department of Medicine, University of Seville, 41009 Seville, Spain
| | - Nabil Hajji
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
- Cancer Division, Faculty of Medicine, Imperial College London, London SW7 2AZ, UK
| | - Víctor Sánchez-Margalet
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
- Institute of Biomedicine of Seville, IBiS, 41013 Seville, Spain;
- Clinical Biochemistry Service, Hospital Universitario Virgen Macarena, University of Seville, 41009 Seville, Spain
| | - Lourdes Hontecillas-Prieto
- Department of Medical Biochemistry and Molecular Biology, and Immunology, School of Medicine, University of Seville, 41009 Seville, Spain; (D.J.G.-D.); (S.L.-E.); (G.A.); (C.J.-C.); (R.F.-C.); (N.H.)
- Institute of Biomedicine of Seville, IBiS, 41013 Seville, Spain;
- Oncology Service, Department of Medicines, School of Medicine, Virgen Macarena University Hospital, University of Seville, 41009 Seville, Spain
- Clinical Biochemistry Service, Hospital Universitario Virgen Macarena, University of Seville, 41009 Seville, Spain
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Fatullaev EI, Shavykin OV, Neelov IM. Molecular Dynamics of Lysine Dendrigrafts in Methanol-Water Mixtures. Int J Mol Sci 2023; 24:ijms24043063. [PMID: 36834474 PMCID: PMC9963150 DOI: 10.3390/ijms24043063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/22/2023] [Accepted: 01/27/2023] [Indexed: 02/08/2023] Open
Abstract
The molecular dynamics method was used to study the structure and properties of dendrigrafts of the first and second generations in methanol-water mixtures with various volume fractions of methanol. At a small volume fraction of methanol, the size and other properties of both dendrigrafts are very similar to those in pure water. A decrease in the dielectric constant of the mixed solvent with an increase in the methanol fraction leads to the penetration of counterions into the dendrigrafts and a reduction of the effective charge. This leads to a gradual collapse of dendrigrafts: a decrease in their size, and an increase in the internal density and the number of intramolecular hydrogen bonds inside them. At the same time, the number of solvent molecules inside the dendrigraft and the number of hydrogen bonds between the dendrigraft and the solvent decrease. At small fractions of methanol in the mixture, the dominant secondary structure in both dendrigrafts is an elongated polyproline II (PPII) helix. At intermediate volume fractions of methanol, the proportion of the PPII helix decreases, while the proportion of another elongated β-sheet secondary structure gradually increases. However, at a high fraction of methanol, the proportion of compact α-helix conformations begins to increase, while the proportion of both elongated conformations decreases.
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Affiliation(s)
- Emil I. Fatullaev
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
| | - Oleg V. Shavykin
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
- Physics Department, Lomonosov Moscow State University, Leninskie Gory 1-2, 119991 Moscow, Russia
- Department of Mathematics, Tver State University, Sadoviy per. 35, 170102 Tver, Russia
| | - Igor M. Neelov
- School of Computer Technologies and Control, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia
- Institute of Macromolecular Compounds of the Russian Academy of Sciences, 199004 St. Petersburg, Russia
- Correspondence:
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Yi S, Kim SY, Vincent MP, Yuk SA, Bobbala S, Du F, Scott EA. Dendritic peptide-conjugated polymeric nanovectors for non-toxic delivery of plasmid DNA and enhanced non-viral transfection of immune cells. iScience 2022; 25:104555. [PMID: 35769884 PMCID: PMC9234717 DOI: 10.1016/j.isci.2022.104555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 04/29/2022] [Accepted: 06/02/2022] [Indexed: 10/26/2022] Open
Abstract
Plasmid DNA (pDNA) transfection is advantageous for gene therapies requiring larger genetic elements, including "all-in-one" CRISPR/Cas9 plasmids, but is limited by toxicity as well as poor intracellular release and transfection efficiency in immune cell populations. Here, we developed a synthetic non-viral gene delivery platform composed of poly(ethylene glycol)-b-poly(propylene sulfide) copolymers linked to a cationic dendritic peptide (DP) via a reduceable bond, PEG-b-PPS-ss-DP (PPDP). A library of self-assembling PPDP polymers was synthesized and screened to identify optimal constructs capable of transfecting macrophages with small (pCMV-DsRed, 4.6 kb) and large (pL-CRISPR.EFS.tRFP, 11.7 kb) plasmids. The optimized PPDP construct transfected macrophages, fibroblasts, dendritic cells, and T cells more efficiently and with less toxicity than a commercial Lipo2K reagent, regardless of pDNA size and under standard culture conditions in the presence of serum. The PPDP technology described herein is a stimuli-responsive polymeric nanovector that can be leveraged to meet diverse challenges in gene delivery.
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Affiliation(s)
- Sijia Yi
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Sun-Young Kim
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-do 16419, Republic of Korea
| | - Michael P Vincent
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Simseok A Yuk
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Sharan Bobbala
- Department of Pharmaceutical Sciences, School of Pharmacy, West Virginia University, Morgantown, WV 26505, USA
| | - Fanfan Du
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
| | - Evan Alexander Scott
- Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA.,Simpson Querrey Institute, Northwestern University, Chicago, IL 60611, USA.,Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60611, USA.,Department of Microbiology-Immunology, Northwestern University, Chicago, IL 60611, USA
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6
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Szabó I, Yousef M, Soltész D, Bató C, Mező G, Bánóczi Z. Redesigning of Cell-Penetrating Peptides to Improve Their Efficacy as a Drug Delivery System. Pharmaceutics 2022; 14:pharmaceutics14050907. [PMID: 35631493 PMCID: PMC9146218 DOI: 10.3390/pharmaceutics14050907] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 12/29/2022] Open
Abstract
Cell-penetrating peptides (CPP) are promising tools for the transport of a broad range of compounds into cells. Since the discovery of the first members of this peptide family, many other peptides have been identified; nowadays, dozens of these peptides are known. These peptides sometimes have very different chemical–physical properties, but they have similar drawbacks; e.g., non-specific internalization, fast elimination from the body, intracellular/vesicular entrapment. Although our knowledge regarding the mechanism and structure–activity relationship of internalization is growing, the prediction and design of the cell-penetrating properties are challenging. In this review, we focus on the different modifications of well-known CPPs to avoid their drawbacks, as well as how these modifications may increase their internalization and/or change the mechanism of penetration.
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Affiliation(s)
- Ildikó Szabó
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Correspondence: (I.S.); (Z.B.)
| | - Mo’ath Yousef
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Dóra Soltész
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Csaba Bató
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Gábor Mező
- MTA-ELTE Research Group of Peptide Chemistry, Eötvös Loránd Research Network (ELKH), Eötvös Loránd University, 1117 Budapest, Hungary;
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
| | - Zoltán Bánóczi
- Department of Organic Chemistry, Institute of Chemistry, Eötvös Loránd University, 1117 Budapest, Hungary; (M.Y.); (D.S.); (C.B.)
- Correspondence: (I.S.); (Z.B.)
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7
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Chen Z, Hu Y, Mao X, Nie D, Zhao H, Hou Z, Li M, Meng J, Luo X, Xue X. Amphipathic dendritic poly-peptides carrier to deliver antisense oligonucleotides against multi-drug resistant bacteria in vitro and in vivo. J Nanobiotechnology 2022; 20:180. [PMID: 35366899 PMCID: PMC8977034 DOI: 10.1186/s12951-022-01384-y] [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: 10/27/2021] [Accepted: 03/18/2022] [Indexed: 11/10/2022] Open
Abstract
Background Outbreaks of infection due to multidrug-resistant (MDR) bacteria, especially Gram-negative bacteria, have become a global health issue in both hospitals and communities. Antisense oligonucleotides (ASOs) based therapeutics hold a great promise for treating infections caused by MDR bacteria. However, ASOs therapeutics are strangled because of its low cell penetration efficiency caused by the high molecular weight and hydrophilicity. Results Here, we designed a series of dendritic poly-peptides (DPP1 to DPP12) to encapsulate ASOs to form DSPE-mPEG2000 decorated ASOs/DPP nanoparticles (DP-AD1 to DP-AD12) and observed that amphipathic DP-AD2, 3, 7 or 8 with a positive charge ≥ 8 showed great efficiency to deliver ASOs into bacteria, but only the two histidine residues contained DP-AD7 and DP-AD8 significantly inhibited the bacterial growth and the targeted gene expression of tested bacteria in vitro. DP-AD7anti-acpP remarkably increased the survival rate of septic mice infected by ESBLs-E. coli, exhibiting strong antibacterial effects in vivo. Conclusions For the first time, we designed DPP as a potent carrier to deliver ASOs for combating MDR bacteria and demonstrated the essential features, namely, amphipathicity, 8–10 positive charges, and 2 histidine residues, that are required for efficient DPP based delivery, and provide a novel approach for the development and research of the antisense antibacterial strategy. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s12951-022-01384-y.
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Taefehshokr S, Parhizkar A, Hayati S, Mousapour M, Mahmoudpour A, Eleid L, Rahmanpour D, Fattahi S, Shabani H, Taefehshokr N. Cancer immunotherapy: Challenges and limitations. Pathol Res Pract 2021; 229:153723. [PMID: 34952426 DOI: 10.1016/j.prp.2021.153723] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 11/19/2021] [Accepted: 11/25/2021] [Indexed: 02/06/2023]
Abstract
Although cancer immunotherapy has taken center stage in mainstream oncology inducing complete and long-lasting tumor regression, only a subset of patients receiving treatment respond and others relapse after an initial response. Different tumor types respond differently, and even in cancer types that respond (hot tumors), we still observe tumors that are unresponsive (cold tumors), suggesting the presence of resistance. Hence, the development of intrinsic or acquired resistance is a big challenge for the cancer immunotherapy field. Resistance to immunotherapy, including checkpoint inhibitors, CAR-T cell therapy, oncolytic viruses, and recombinant cytokines arises due to cancer cells employing several mechanisms to evade immunosurveillance.
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Affiliation(s)
- Sina Taefehshokr
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
| | - Aram Parhizkar
- Faculty of Natural Science, Tabriz University, Tabriz, Iran
| | - Shima Hayati
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Morteza Mousapour
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Amin Mahmoudpour
- Department of Immunology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Liliane Eleid
- Section of Cell Biology and Functional Genomics, Imperial College London, London, United Kingdom
| | - Dara Rahmanpour
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Sahand Fattahi
- Department of Clinical Sciences, Faculty of Veterinary Medicine, Tabriz Branch, Islamic Azad University, Tabriz, Iran
| | - Hadi Shabani
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Nima Taefehshokr
- Department of Microbiology and Immunology, Center for Human Immunology, The University of Western Ontario, London, Ontario, Canada
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Bezrodnyi VV, Mikhtaniuk SE, Shavykin OV, Neelov IM, Sheveleva NN, Markelov DA. Size and Structure of Empty and Filled Nanocontainer Based on Peptide Dendrimer with Histidine Spacers at Different pH. Molecules 2021; 26:6552. [PMID: 34770963 PMCID: PMC8588109 DOI: 10.3390/molecules26216552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 12/20/2022] Open
Abstract
Novel peptide dendrimer with Lys-2His repeating units was recently synthesized, studied by NMR (Molecules, 2019, 24, 2481) and tested as a nanocontainer for siRNA delivery (Int. J. Mol. Sci., 2020, 21, 3138). Histidine amino acid residues were inserted in the spacers of this dendrimer. Increase of their charge with a pH decrease turns a surface-charged dendrimer into a volume-charged one and should change all properties. In this paper, the molecular dynamics simulation method was applied to compare the properties of the dendrimer in water with explicit counterions at two different pHs (at normal pH with neutral histidines and at low pH with fully protonated histidines) in a wide interval of temperatures. We obtained that the dendrimer at low pH has essentially larger size and size fluctuations. The electrostatic properties of the dendrimers are different but they are in good agreement with the theoretical soft sphere model and practically do not depend on temperature. We have shown that the effect of pairing of side imidazole groups is much stronger in the dendrimer with neutral histidines than in the dendrimer with protonated histidines. We also demonstrated that the capacity of a nanocontainer based on this dendrimer with protonated histidines is significantly larger than that of a nanocontainer with neutral histidines.
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Affiliation(s)
- Valeriy V. Bezrodnyi
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.); (D.A.M.)
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia;
| | - Sofia E. Mikhtaniuk
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia;
| | - Oleg V. Shavykin
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.); (D.A.M.)
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia;
- Tver State University, Zhelyabova St., 33, 170100 Tver, Russia
| | - Igor M. Neelov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia;
| | - Nadezhda N. Sheveleva
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.); (D.A.M.)
| | - Denis A. Markelov
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.); (D.A.M.)
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10
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Lipophilic Peptide Dendrimers for Delivery of Splice-Switching Oligonucleotides. Pharmaceutics 2021; 13:pharmaceutics13010116. [PMID: 33477663 PMCID: PMC7831936 DOI: 10.3390/pharmaceutics13010116] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/07/2021] [Accepted: 01/08/2021] [Indexed: 02/06/2023] Open
Abstract
Non-viral transfection reagents are continuously being developed in attempt to replace viral vectors. Among those non-viral vectors, dendrimers have gained increasing interest due to their unique molecular structure and multivalency. However, more improvements are still needed to achieve higher efficacy and lower toxicity. In this study, we have examined 18 peptide dendrimers conjugated to lipophilic moieties, such as fatty acids or hydrophobic amino acids, that were previously explored for siRNA. Reporter cells were employed to investigate the transfection of single strand splice-switching oligonucleotides (ONs) using these peptide dendrimers. Luciferase level changes reflecting efficiency varied with amino acid composition, stereochemistry, and complexation media used. 3rd generation peptide dendrimers with D-amino acid configuration were superior to L-form. Lead formulations with 3rd generation, D-amino acid peptide dendrimers increased the correction level of the delivered ON up to 93-fold over untreated HeLa Luc/705 cells with minimal toxicity. To stabilize the formed complexes, Polyvinyl alcohol 18 (PVA18) polymer was added. Although PVA18 addition increased activity, toxicity when using our best candidates G 2,3KL-(Leu)4 (D) and G 2,3KL-diPalmitamide (D) was observed. Our findings demonstrate the potential of lipid-conjugated, D-amino acid-containing peptide dendrimers to be utilized as an effective and safe delivery vector for splice-switching ONs.
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11
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Bezrodnyi VV, Shavykin OV, Mikhtaniuk SE, Neelov IM, Sheveleva NN, Markelov DA. Why the Orientational Mobility in Arginine and Lysine Spacers of Peptide Dendrimers Designed for Gene Delivery Is Different? Int J Mol Sci 2020; 21:E9749. [PMID: 33371242 PMCID: PMC7766995 DOI: 10.3390/ijms21249749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/06/2020] [Accepted: 12/08/2020] [Indexed: 12/12/2022] Open
Abstract
New peptide dendrimer with Lys-2Arg repeating units was recently studied experimentally by NMR (RSC Advances, 2019, 9, 18018) and tested as gene carrier successfully (Int. J. Mol. Sci., 2020, 21, 3138). The unusual slowing down of the orientational mobility of 2Arg spacers in this dendrimer was revealed. It has been suggested that this unexpected behavior is caused by the Arg-Arg pairing effect in water, which leads to entanglements between dendrimer branches. In this paper, we determine the reason for this slowing down using atomistic molecular dynamics simulation of this dendrimer. We present that the structural properties of Lys-2Arg dendrimer are close to those of the Lys-2Lys dendrimer at all temperatures (Polymers, 2020, 12, 1657). However, the orientational mobility of the H-H vector in CH2-N groups of 2Arg spacers in Lys-2Arg dendrimer is significantly slower than the mobility of the same vector in the Lys-2Lys dendrimer. This result is in agreement with the recent NMR experiments for the same systems. We revealed that this difference is not due to the arginine-arginine pairing, but is due to the semiflexibility effect associated with the different contour length from CH2-N group to the end of the side arginine or lysine segment in spacers.
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Affiliation(s)
- Valeriy V. Bezrodnyi
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.)
- Faculty of Applied Optics and Bioengineering Institute, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (I.M.N.)
| | - Oleg V. Shavykin
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.)
- Faculty of Applied Optics and Bioengineering Institute, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (I.M.N.)
| | - Sofia E. Mikhtaniuk
- Faculty of Applied Optics and Bioengineering Institute, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (I.M.N.)
| | - Igor M. Neelov
- Faculty of Applied Optics and Bioengineering Institute, St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (I.M.N.)
| | - Nadezhda N. Sheveleva
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.)
| | - Denis A. Markelov
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (V.V.B.); (N.N.S.)
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12
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Surface-engineered nanoliposomes with lipidated and non-lipidated peptide-dendrimeric scaffold for efficient transdermal delivery of a therapeutic agent: Development, characterization, toxicological and preclinical performance analyses. Eur J Pharm Biopharm 2020; 156:97-113. [DOI: 10.1016/j.ejpb.2020.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/30/2020] [Accepted: 09/01/2020] [Indexed: 11/23/2022]
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13
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Peptides as a material platform for gene delivery: Emerging concepts and converging technologies. Acta Biomater 2020; 117:40-59. [PMID: 32966922 DOI: 10.1016/j.actbio.2020.09.027] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 08/27/2020] [Accepted: 09/16/2020] [Indexed: 02/06/2023]
Abstract
Successful gene therapies rely on methods that safely introduce DNA into target cells and enable subsequent expression of proteins. To that end, peptides are an attractive materials platform for DNA delivery, facilitating condensation into nanoparticles, delivery into cells, and subcellular release to enable protein expression. Peptides are programmable materials that can be designed to address biocompatibility, stability, and subcellular barriers that limit efficiency of non-viral gene delivery systems. This review focuses on fundamental structure-function relationships regarding peptide design and their impact on nanoparticle physical properties, biologic activity, and biocompatibility. Recent peptide technologies utilize multi-dimensional structures, non-natural chemistries, and combinations of peptides with lipids to achieve desired properties and efficient transfection. Advances in DNA cargo design are also presented to highlight further opportunities for peptide-based gene delivery. Modern DNA designs enable prolonged expression compared to traditional plasmids, providing an additional component that can be synergized with peptide carriers for improved transfection. Peptide transfection systems are poised to become a flexible and efficient platform incorporating new chemistries, functionalities, and improved DNA cargos to usher in a new era of gene therapy.
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14
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Mikhtaniuk SE, Bezrodnyi VV, Shavykin OV, Neelov IM, Sheveleva NN, Penkova AV, Markelov DA. Comparison of Structure and Local Dynamics of Two Peptide Dendrimers with the Same Backbone but with Different Side Groups in Their Spacers. Polymers (Basel) 2020; 12:E1657. [PMID: 32722466 PMCID: PMC7464546 DOI: 10.3390/polym12081657] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 01/13/2023] Open
Abstract
In this paper, we perform computer simulation of two lysine-based dendrimers with Lys-2Lys and Lys-2Gly repeating units. These dendrimers were recently studied experimentally by NMR (Sci. Reports, 2018, 8, 8916) and tested as carriers for gene delivery (Bioorg. Chem., 2020, 95, 103504). Simulation was performed by molecular dynamics method in a wide range of temperatures. We have shown that the Lys-2Lys dendrimer has a larger size but smaller fluctuations as well as lower internal density in comparison with the Lys-2Gly dendrimer. The Lys-2Lys dendrimer has larger charge but counterions form more ion pairs with its NH 3 + groups and reduce the bare charge and zeta potential of the first dendrimer more strongly. It was demonstrated that these differences between dendrimers are due to the lower flexibility and the larger charge (+2) of each 2Lys spacers in comparison with 2Gly ones. The terminal CH 2 groups in both dendrimers move faster than the inner CH 2 groups. The calculated temperature dependencies of the spin-lattice relaxation times of these groups for both dendrimers are in a good agreement with the experimental results obtained by NMR.
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Affiliation(s)
- Sofia E. Mikhtaniuk
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (V.V.B.); (O.V.S.); (I.M.N.)
| | - Valeriy V. Bezrodnyi
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (V.V.B.); (O.V.S.); (I.M.N.)
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (N.N.S.); (A.V.P.)
| | - Oleg V. Shavykin
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (V.V.B.); (O.V.S.); (I.M.N.)
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (N.N.S.); (A.V.P.)
| | - Igor M. Neelov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, 197101 St. Petersburg, Russia; (S.E.M.); (V.V.B.); (O.V.S.); (I.M.N.)
| | - Nadezhda N. Sheveleva
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (N.N.S.); (A.V.P.)
| | - Anastasia V. Penkova
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (N.N.S.); (A.V.P.)
| | - Denis A. Markelov
- St. Petersburg State University, 7/9 Universitetskaya nab., 199034 St. Petersburg, Russia; (N.N.S.); (A.V.P.)
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15
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Developing small activating RNA as a therapeutic: current challenges and promises. Ther Deliv 2020; 10:151-164. [PMID: 30909853 DOI: 10.4155/tde-2018-0061] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
RNA activation (RNAa) allows specific gene upregulation mediated by a small activating RNA (saRNA). Harnessing this process would help in developing novel therapeutics for undruggable diseases. Since its discovery in mid 2000s, improvements of saRNA design, synthetic chemistry and understanding of the biology have matured the way to apply RNAa. Indeed, MiNA therapeutics Ltd has conducted the first RNAa clinical trial for advanced hepatocellular carcinoma patients with promising outcomes. However, to fully realize the RNAa potential better saRNA delivery strategies are needed to target other diseases. Currently, saRNA can be delivered in vivo by lipid nanoparticles, dendrimers, lipid and polymer hybrids and aptamers. Further developing these delivery technologies and novel application of RNAa will prove to be invaluable for new treatment development.
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16
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Heitz M, Zamolo S, Javor S, Reymond JL. Fluorescent Peptide Dendrimers for siRNA Transfection: Tracking pH Responsive Aggregation, siRNA Binding, and Cell Penetration. Bioconjug Chem 2020; 31:1671-1684. [PMID: 32421327 DOI: 10.1021/acs.bioconjchem.0c00231] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Transfecting nucleic acids into various cells is a key procedure in biological research also envisioned for therapeutic applications. In our effort to obtain simple reagents that would be readily accessible from commercial building blocks, we recently reported peptide dendrimers as single component siRNA transfection reagents accessible in pure form by solid-phase peptide synthesis. Here, we extend our studies of these dendrimers by identifying analogs bearing a coumarin or BODIPY fluorescent label in their core and displaying comparable siRNA transfection efficiencies, pH dependent aggregation, siRNA binding, and secondary structures. Fluorescence resonance energy transfer (FRET) studies show that the dendrimers are tightly associated with siRNA within the formed nanoparticles at pH 7.4 but are released into solution at pH 5.0 and can participate in endosome escape by destabilizing the membrane at this pH value. Colocalization studies furthermore suggest that peptide dendrimers and siRNA remain tightly associated throughout the transfection process.
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Affiliation(s)
- Marc Heitz
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Susanna Zamolo
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Sacha Javor
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
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17
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Wang M, Wu B, Tucker JD, Shah SN, Lu P, Lu Q. Triazine-cored polymeric vectors for antisense oligonucleotide delivery in vitro and in vivo. J Nanobiotechnology 2020; 18:34. [PMID: 32070342 PMCID: PMC7029474 DOI: 10.1186/s12951-020-0586-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 01/29/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The polymer-based drug/gene delivery is promising for the treatment of inherent or acquire disease, because of the polymer's structural flexibility, larger capacity for therapeutic agent, low host immunogenicity and less cost. Antisense therapy is an approach to fighting genetic disorders or infections using antisense oligonucleotides (AOs). Unfortunately, the naked AOs showed low therapeutic efficacy in vivo and in clinical trial due to their poor cellular uptake and fast clearance in bloodstream. In this study, a series of triazine-cored amphiphilic polymers (TAPs) were investigated for their potential to enhance delivery of AOs, 2'-O-methyl phosphorothioate RNA (2'-OMePS) and phosphorodiamidate morpholino oligomer (PMO) both in vitro and in vivo. RESULTS TAPs significantly enhanced AO-induced exon-skipping in a GFP reporter-based myoblast and myotube culture system, and observed cytotoxicity of the TAPs were lower than Endoporter, Lipofectamine-2000 or PEI 25K. Application of optimized formulations of TAPs with AO targeted to dystrophin exon 23 demonstrated a significant increase in exon-skipping efficiency in dystrophic mdx mice. The best ones for PMO and 2'-OMePS delivery have reached to 11-, 15-fold compared with the AO only in mdx mice, respectively. CONCLUSION The study of triazine-cored amphiphilic polymers for AO delivery in vitro and in mdx mice indicated that the carrier's performances are related to the molecular size, compositions and hydrophilic-lipophilic balance (HLB) of the polymers, as well as the AO's structure. Improved exon-skipping efficiency of AOs observed in vitro and in mdx mice accompanied with low cytotoxicity demonstrated TAP polymers are potentials as safe and effective delivery carrier for gene/drug delivery.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA.
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Jason D Tucker
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
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18
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Wang Y, Luo J, Truebenbach I, Reinhard S, Klein PM, Höhn M, Kern S, Morys S, Loy DM, Wagner E, Zhang W. Double Click-Functionalized siRNA Polyplexes for Gene Silencing in Epidermal Growth Factor Receptor-Positive Tumor Cells. ACS Biomater Sci Eng 2020; 6:1074-1089. [DOI: 10.1021/acsbiomaterials.9b01904] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yanfang Wang
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Jie Luo
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Ines Truebenbach
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Sören Reinhard
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Philipp Michael Klein
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Miriam Höhn
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Sarah Kern
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Stephan Morys
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Dominik M. Loy
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
| | - Ernst Wagner
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
- Nanosystems Initiative Munich (NIM), Schellingstrasse 4, 80799 Munich, Germany
| | - Wei Zhang
- Department of Pharmacy, Ludwig-Maximilians-Universität (LMU) München, Butenandtstrasse 5-13, 81377 Munich, Germany
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19
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Zamolo SJ, Darbre T, Reymond JL. Transfecting tissue models with CRISPR/Cas9 plasmid DNA using peptide dendrimers. Chem Commun (Camb) 2020; 56:11981-11984. [DOI: 10.1039/d0cc04750c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A peptide dendrimer vector is shown to transfect a large CRISPR/Cas9 plasmid into 3D-tumor spheroids with exceptionally high efficiency.
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Affiliation(s)
- Susanna J. Zamolo
- Department of Chemistry and Biochemistry
- University of Bern
- Freiestrasse 3
- 3012 Bern
- Switzerland
| | - Tamis Darbre
- Department of Chemistry and Biochemistry
- University of Bern
- Freiestrasse 3
- 3012 Bern
- Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry
- University of Bern
- Freiestrasse 3
- 3012 Bern
- Switzerland
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20
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Sugar and Polymer Excipients Enhance Uptake and Splice-Switching Activity of Peptide-Dendrimer/Lipid/Oligonucleotide Formulations. Pharmaceutics 2019; 11:pharmaceutics11120666. [PMID: 31835435 PMCID: PMC6955847 DOI: 10.3390/pharmaceutics11120666] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/19/2019] [Accepted: 12/06/2019] [Indexed: 12/13/2022] Open
Abstract
Non-viral transfection vectors are commonly used for oligonucleotide (ON) delivery but face many challenges before reaching the desired compartments inside cells. With the support of additional compounds, it might be more feasible for a vector to endure the barriers and achieve efficient delivery. In this report, we screened 18 different excipients and evaluated their effect on the performance of peptide dendrimer/lipid vector to deliver single-stranded, splice-switching ONs under serum conditions. Transfection efficiency was monitored in four different reporter cell lines by measuring splice-switching activity on RNA and protein levels. All reporter cell lines used had a mutated human β-globin intron 2 sequence interrupting the luciferase gene, which led to an aberrant splicing of luciferase pre-mRNA and subsidence of luciferase protein translation. In the HeLa Luc/705 reporter cell line (a cervical cancer cell line), the lead excipients (Polyvinyl derivatives) potentiated the splice-switching activity up to 95-fold, compared to untreated cells with no detected cytotoxicity. Physical characterization revealed that lead excipients decreased the particle size and the zeta potential of the formulations. In vivo biodistribution studies emphasized the influence of formulations as well as the type of excipients on biodistribution profiles of the ON. Subsequently, we suggest that the highlighted impact of tested excipients would potentially assist in formulation development to deliver ON therapeutics in pre-clinical and clinical settings.
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21
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Gigante A, Li M, Junghänel S, Hirschhäuser C, Knauer S, Schmuck C. Non-viral transfection vectors: are hybrid materials the way forward? MEDCHEMCOMM 2019; 10:1692-1718. [PMID: 32180915 PMCID: PMC7053704 DOI: 10.1039/c9md00275h] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/12/2019] [Indexed: 12/18/2022]
Abstract
Transfection is a process by which oligonucleotides (DNA or RNA) are delivered into living cells. This allows the synthesis of target proteins as well as their inhibition (gene silencing). However, oligonucleotides cannot cross the plasma membrane by themselves; therefore, efficient carriers are needed for successful gene delivery. Recombinant viruses are among the earliest described vectors. Unfortunately, they have severe drawbacks such as toxicity and immunogenicity. In this regard, the development of non-viral transfection vectors has attracted increasing interests, and has become an important field of research. In the first part of this review we start with a tutorial introduction into the biological backgrounds of gene transfection followed by the classical non-viral vectors (cationic organic carriers and inorganic nanoparticles). In the second part we highlight selected recent reports, which demonstrate that hybrid vectors that combine key features of classical carriers are a remarkable strategy to address the current challenges in gene delivery.
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Affiliation(s)
- A Gigante
- Institute of Organic Chemistry , University of Duisburg-Essen , 45141 Essen , Germany .
| | - M Li
- Institute of Organic Chemistry , University of Duisburg-Essen , 45141 Essen , Germany .
| | - S Junghänel
- Institute of Organic Chemistry , University of Duisburg-Essen , 45141 Essen , Germany .
- Biomedical Technology Center of the Medical Faculty , University of Muenster , Muenster , Germany
| | - C Hirschhäuser
- Institute of Organic Chemistry , University of Duisburg-Essen , 45141 Essen , Germany .
| | - S Knauer
- Faculty of Biology , University of Duisburg-Essen , 45141 Essen , Germany
| | - C Schmuck
- Institute of Organic Chemistry , University of Duisburg-Essen , 45141 Essen , Germany .
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22
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Sapra R, Verma RP, Maurya GP, Dhawan S, Babu J, Haridas V. Designer Peptide and Protein Dendrimers: A Cross-Sectional Analysis. Chem Rev 2019; 119:11391-11441. [PMID: 31556597 DOI: 10.1021/acs.chemrev.9b00153] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Dendrimers have attracted immense interest in science and technology due to their unique chemical structure that offers a myriad of opportunities for researchers. Dendritic design allows us to present peptides in a branched three-dimensional fashion that eventually leads to a globular shape, thus mimicking globular proteins. Peptide dendrimers, unlike other classes of dendrimers, have immense applications in biomedical research due to their biological origin. The diversity of potential building blocks and innumerable possibilities for design, along with the fact that the area is relatively underexplored, make peptide dendrimers sought-after candidates for various applications. This review summarizes the stepwise evolution of peptidic dendrimers along with their multifaceted applications in various fields. Further, the introduction of biomacromolecules such as proteins to a dendritic scaffold, resulting in complex macromolecules with discrete molecular weights, is an altogether new addition to the area of organic chemistry. The synthesis of highly complex and fully folded biomacromolecules on a dendritic scaffold requires expertise in synthetic organic chemistry and biology. Presently, there are only a handful of examples of protein dendrimers; we believe that these limited examples will fuel further research in this area.
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Affiliation(s)
- Rachit Sapra
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Ram P Verma
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Govind P Maurya
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Sameer Dhawan
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Jisha Babu
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - V Haridas
- Department of Chemistry , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
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23
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Baeriswyl S, Javor S, Stocker A, Darbre T, Reymond J. X‐Ray Crystal Structure of a Second‐Generation Peptide Dendrimer in Complex with
Pseudomonas aeruginosa
Lectin LecB. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Stéphane Baeriswyl
- Department of Chemistry and BiochemistryUniversity of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Sacha Javor
- Department of Chemistry and BiochemistryUniversity of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Achim Stocker
- Department of Chemistry and BiochemistryUniversity of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Tamis Darbre
- Department of Chemistry and BiochemistryUniversity of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Jean‐Louis Reymond
- Department of Chemistry and BiochemistryUniversity of Bern Freiestrasse 3 3012 Bern Switzerland
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24
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Heitz M, Javor S, Darbre T, Reymond JL. Stereoselective pH Responsive Peptide Dendrimers for siRNA Transfection. Bioconjug Chem 2019; 30:2165-2182. [PMID: 31398014 DOI: 10.1021/acs.bioconjchem.9b00403] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Transfecting nucleic acids into cells is an essential procedure in biological research usually performed using nonviral transfection reagents. Unfortunately, most transfection reagents have polymeric or undisclosed structures and require nonstandard synthetic procedures. Herein we report peptide dendrimers accessible as pure products from standard building blocks by solid-phase peptide synthesis and acting as nontoxic single component siRNA transfection reagents for a variety of cell lines with equal or better performance than the gold standard lipofectamine L2000. Structure-activity relationships and mechanistic studies illuminate their transfection mechanism in unprecedented detail. Stereoselective dendrimer aggregation via intermolecular β-sheets at neutral pH enables siRNA complexation to form nanoparticles which enter cells by endocytosis. Endosome acidification triggers protonation of amino termini and rearrangement to an α-helical conformation forming smaller dendrimer/siRNA nanoparticles, which escape the endosome and release their siRNA cargo in the cytosol. Two particularly efficient d-enantiomeric dendrimers are proposed as new reference reagents for siRNA transfection.
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Affiliation(s)
- Marc Heitz
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , 3012 Bern , Switzerland
| | - Sacha Javor
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , 3012 Bern , Switzerland
| | - Tamis Darbre
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , 3012 Bern , Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry , University of Bern , Freiestrasse 3 , 3012 Bern , Switzerland
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25
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Xu J, Khan AR, Fu M, Wang R, Ji J, Zhai G. Cell-penetrating peptide: a means of breaking through the physiological barriers of different tissues and organs. J Control Release 2019; 309:106-124. [PMID: 31323244 DOI: 10.1016/j.jconrel.2019.07.020] [Citation(s) in RCA: 80] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 07/15/2019] [Indexed: 12/24/2022]
Abstract
The selective infiltration of cell membranes and tissue barriers often blocks the entry of most active molecules. This natural defense mechanism prevents the invasion of exogenous substances and limits the therapeutic value of most available molecules. Therefore, it is particularly important to find appropriate ways of membrane translocation and therapeutic agent delivery to its target site. Cell penetrating peptides (CPPs) are a group of short peptides harnessed in this condition, possessing a significant capacity for membrane transduction and could be exploited to transfer various biologically active cargoes into the cells. Since their discovery, CPPs have been employed for delivery of a wide variety of therapeutic molecules to treat various disorders including cranial nerve involvement, ocular inflammation, myocardial ischemia, dermatosis and cancer. The promising results of CPPs-derived therapeutics in various tumor models demonstrated a potential and worthwhile scope of CPPs in chemotherapy. This review describes the detailed description of CPPs and CPPs-assisted molecular delivery against various tissues and organs disorders. An emphasis is focused on summarizing the novel insights and achievements of CPPs in surmounting the natural membrane barriers during the last 5 years.
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Affiliation(s)
- Jiangkang Xu
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Abdur Rauf Khan
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Manfei Fu
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Rujuan Wang
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Jianbo Ji
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China
| | - Guangxi Zhai
- School of Pharmaceutical Sciences, Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan 250012, China.
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Abstract
Dextran has become a hot research topic in drug vehicle material because of its biodegradable, nonspecific cell adhesion, resistance to protein adsorption, low price and ease of structural modification. The fate and changes of dextran in vivo are not fully understood. It is helpful to guide the design and modification of dextran drug vehicles to clarify the changes in the morphology, metabolism and function of drug targets. With the deep understanding of dextran and the emergence of new functional dextran derivatives, its application in nanodrug delivery systems will be more and more, clinically applicable delivery systems may also be available.
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Siriwardena TN, Lüscher A, Köhler T, van Delden C, Javor S, Reymond J. Antimicrobial Peptide Dendrimer Chimera. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900034] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Thissa N. Siriwardena
- Department of Chemistry and BiochemistryUniversity of Bern, Freiestrasse 3 CH-3012 Bern Switzerland
| | - Alexandre Lüscher
- Department of Microbiology and Molecular Medicine, University of Geneva, Service of Infectious DiseasesUniversity Hospital of Geneva, 4 rue Gabrielle-Perret-Gentil CH-1211 Geneva Switzerland
| | - Thilo Köhler
- Department of Microbiology and Molecular Medicine, University of Geneva, Service of Infectious DiseasesUniversity Hospital of Geneva, 4 rue Gabrielle-Perret-Gentil CH-1211 Geneva Switzerland
| | - Christian van Delden
- Department of Microbiology and Molecular Medicine, University of Geneva, Service of Infectious DiseasesUniversity Hospital of Geneva, 4 rue Gabrielle-Perret-Gentil CH-1211 Geneva Switzerland
| | - Sacha Javor
- Department of Chemistry and BiochemistryUniversity of Bern, Freiestrasse 3 CH-3012 Bern Switzerland
| | - Jean‐Louis Reymond
- Department of Chemistry and BiochemistryUniversity of Bern, Freiestrasse 3 CH-3012 Bern Switzerland
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28
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Tariq I, Pinnapireddy SR, Duse L, Ali MY, Ali S, Amin MU, Goergen N, Jedelská J, Schäfer J, Bakowsky U. Lipodendriplexes: A promising nanocarrier for enhanced gene delivery with minimal cytotoxicity. Eur J Pharm Biopharm 2019; 135:72-82. [DOI: 10.1016/j.ejpb.2018.12.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 12/21/2018] [Accepted: 12/23/2018] [Indexed: 12/11/2022]
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Sheveleva N, Markelov DA, Vovk MA, Mikhailova ME, Tarasenko II, Tolstoy PM, Neelov IM, Lähderanta E. Lysine-based dendrimer with double arginine residues. RSC Adv 2019; 9:18018-18026. [PMID: 35520554 PMCID: PMC9064636 DOI: 10.1039/c9ra02461a] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 05/29/2019] [Indexed: 02/01/2023] Open
Abstract
Due to their well-defined structure, multivalency, biocompatibility, and low toxicity, lysine dendrimers can be used as safe and efficient nanocarriers for drug and gene delivery. One useful strategy for improving the gene delivery properties of dendrimers is modification with arginine amino acid (Arg) residues. Incorporation of Arg residues could be favorable for the enhancement in transfection efficiency of lysine based dendrimers. In this work, we have synthesized a new second-generation poly-l-lysine dendrimer with repeating units containing two linear Arg residues between neighboring lysine branching points (Lys-2Arg dendrimer) and studied its physicochemical properties. We confirmed the structure of Lys-2Arg dendrimer using various one- and two-dimensional 1H and 13C NMR spectroscopy methods. Comparison of T1H relaxation data for Lys-2Arg and Lys-2Lys dendrimers showed that the replacement of double Lys residues with double Arg residues resulted in a sharp decrease in the mobility of methylene groups in side segments and in the main chain of ε-Lys inner segments. We suggest that this unexpected effect is caused by a guanidine–guanidine pairing effect in water, which leads to entanglements between dendrimer branches. A new poly-l-lysine dendrimer with arginine residues was synthesized and its structure and physical–chemical properties were analyzed by NMR spectroscopy.![]()
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Affiliation(s)
| | | | | | | | - Irina I. Tarasenko
- Institute of Macromolecular Compounds
- Russian Academy of Sciences
- St. Petersburg
- 199004 Russia
| | | | - Igor M. Neelov
- St. Petersburg National Research University of Information Technologies
- Mechanics and Optics (ITMO University)
- St. Petersburg
- 197101 Russia
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30
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Chaudhari KS, Akamanchi KG. Fatty Acid Esters of G0-(Propyl Ether Imine) Dendron as Bicephalous Heterolipids for Permeation Enhancement in Transdermal Drug Delivery. ACS Biomater Sci Eng 2018; 4:4008-4020. [PMID: 33418801 DOI: 10.1021/acsbiomaterials.8b00953] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Kapil S. Chaudhari
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai, India, 400019
| | - Krishnacharya G. Akamanchi
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology, Matunga (E), Mumbai, India, 400019
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31
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Ailincai D, Peptanariu D, Pinteala M, Marin L. Dynamic constitutional chemistry towards efficient nonviral vectors. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 94:635-646. [PMID: 30423749 DOI: 10.1016/j.msec.2018.10.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 09/11/2018] [Accepted: 10/01/2018] [Indexed: 10/28/2022]
Abstract
Dynamic constitutional chemistry has been used to design nonviral vectors for gene transfection. Their design has been thought in order to fulfill ab initio the main requirements for gene therapy. As building blocks were used hyperbranched PEI as hydrophilic part and benzentrialdehyde and a diamine linear siloxane as hydrophobic part, connected through reversible imine linkages. The obtaining of the envisaged structures has been confirmed by NMR and FTIR spectroscopy. The dynamic synthesized amphiphiles proved to be able to self-assemble in nano-sized spherical entities as was demonstrated by TEM and DLS, characterized by a narrow dimensional polydispersity. Agarose gel electrophoresis proved the ability of the synthesized compounds to bind DNA, while TEM revealed the spherical morphology of the formed polyplexes. As a proof of the concept, the nonviral vectors promoted an efficient transfection on HeLa cells, demonstrating that dynamic constitutional chemistry can be an important tool in the development of this domain.
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Affiliation(s)
- Daniela Ailincai
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania.
| | | | | | - Luminita Marin
- Petru Poni Institute of Macromolecular Chemistry, Iasi, Romania
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32
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Saher O, Rocha CSJ, Zaghloul EM, Wiklander OPB, Zamolo S, Heitz M, Ezzat K, Gupta D, Reymond JL, Zain R, Hollfelder F, Darbre T, Lundin KE, El Andaloussi S, Smith CIE. Novel peptide-dendrimer/lipid/oligonucleotide ternary complexes for efficient cellular uptake and improved splice-switching activity. Eur J Pharm Biopharm 2018; 132:29-40. [PMID: 30193928 DOI: 10.1016/j.ejpb.2018.09.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Revised: 08/15/2018] [Accepted: 09/03/2018] [Indexed: 12/24/2022]
Abstract
Despite the advances in gene therapy and in oligonucleotide (ON) chemistry, efficient cellular delivery remains an obstacle. Most current transfection reagents suffer from low efficacy or high cytotoxicity. In this report, we describe the synergism between lipid and dendrimer delivery vectors to enhance the transfection efficiency, while avoiding high toxicity. We screened a library of 20 peptide dendrimers representing three different generations and evaluated their capability to deliver a single-stranded splice-switching ON after formulating with lipids (DOTMA/DOPE). The transfection efficiency was analyzed in 5 reporter cell lines, in serum-free and serum conditions, and with 5 different formulation protocols. All formulations displayed low cytotoxicity to the majority of the tested cell lines. The complex sizes were < 200 nm; particle size distributions of effective mixtures were < 80 nm; and, the zeta potential was dependent on the formulation buffer used. The best dendrimer enhanced transfection in a HeLa reporter cell line by 30-fold compared to untreated cells under serum-free conditions. Interestingly, addition of sucrose to the formulation enabled - for the first time - peptide dendrimers/lipid complexes to efficiently deliver splice-switching ON in the presence of serum, reaching 40-fold increase in splice switching. Finally, in vivo studies highlighted the potential of these formulae to change the biodistribution pattern to be more towards the liver (90% of injected dose) compared to the kidneys (5% of injected dose) or to unformulated ON. This success encourages further development of peptide dendrimer complexes active in serum and future investigation of mechanisms behind the influence of additives on transfection efficacy.
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Affiliation(s)
- Osama Saher
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden; Department Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Cristina S J Rocha
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Eman M Zaghloul
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Oscar P B Wiklander
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Susanna Zamolo
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Marc Heitz
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Kariem Ezzat
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Dhanu Gupta
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Rula Zain
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden; Department of Clinical Genetics, Centre for Rare Diseases, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Florian Hollfelder
- Department of Biochemistry, University of Cambridge 80 Tennis Court Road, Cambridge CB2 1GA, UK
| | - Tamis Darbre
- Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland
| | - Karin E Lundin
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - Samir El Andaloussi
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden
| | - C I Edvard Smith
- Department of Laboratory Medicine, Clinical Research Center, Karolinska Institutet, Karolinska University Hospital Huddinge, 141 86 Huddinge, Sweden.
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33
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Allen RJ, Mathew B, Rice KG. PEG-Peptide Inhibition of Scavenger Receptor Uptake of Nanoparticles by the Liver. Mol Pharm 2018; 15:3881-3891. [PMID: 30052459 DOI: 10.1021/acs.molpharmaceut.8b00355] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PEGylated polylysine peptides represent a new class of scavenger receptor inhibitors that may find utility at inhibiting DNA nanoparticle uptake by Kupffer cells in the liver. PEG-peptides inhibit scavenger receptors in the liver by a novel mechanism involving in situ formation of albumin nanoparticles. The present study developed a new in vivo assay used to explore the structure-activity-relationships of PEG-peptides to find potent scavenger receptor inhibitors. Radio-iodinated PEG-peptides were dosed i.v. in mice and shown to saturate liver uptake in a dose-dependent fashion. The inhibition potency (IC50) was dependent on both the length of a polylysine repeat and PEG molecular weight. PEG30kda-Cys-Tyr-Lys25 was confirmed to be a high molecular weight (33.5 kDa) scavenger receptor inhibitor with an IC50 of 18 μM. Incorporation of multiple Leu residues improved potency, allowing a decrease in PEG MW and Lys repeat, resulting in PEG5kda-Cys-Tyr-Lys-(Leu-Lys4)3-Leu-Lys that inhibited scavenger receptors with an IC50 = 20 μM. A further decrease in PEG MW to 2 kDa increased potency further, resulting in a low molecular weight (4403 g/mol) PEG-peptide with an IC50 of 3 μM. Optimized low molecular weight PEG-peptides also demonstrated potency when inhibiting the uptake of radio-iodinated DNA nanoparticles by the liver. This study demonstrates an approach to discover low molecular weight PEG-peptides that serve as potent scavenger receptor inhibitors to block nanoparticle uptake by the liver.
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Affiliation(s)
- Rondine J Allen
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Basil Mathew
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy , University of Iowa , Iowa City , Iowa 52242 , United States
| | - Kevin G Rice
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy , University of Iowa , Iowa City , Iowa 52242 , United States
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34
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Sheveleva NN, Markelov DA, Vovk MA, Mikhailova ME, Tarasenko II, Neelov IM, Lähderanta E. NMR studies of excluded volume interactions in peptide dendrimers. Sci Rep 2018; 8:8916. [PMID: 29891953 PMCID: PMC5995971 DOI: 10.1038/s41598-018-27063-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/23/2018] [Indexed: 02/06/2023] Open
Abstract
Peptide dendrimers are good candidates for diverse biomedical applications due to their biocompatibility and low toxicity. The local orientational mobility of groups with different radial localization inside dendrimers is important characteristic for drug and gene delivery, synthesis of nanoparticles, and other specific purposes. In this paper we focus on the validation of two theoretical assumptions for dendrimers: (i) independence of NMR relaxations on excluded volume effects and (ii) similarity of mobilities of side and terminal segments of dendrimers. For this purpose we study 1H NMR spin-lattice relaxation time, T1H, of two similar peptide dendrimers of the second generation, with and without side fragments in their inner segments. Temperature dependences of 1/T1H in the temperature range from 283 to 343 K were measured for inner and terminal groups of the dendrimers dissolved in deuterated water. We have shown that the 1/T1H temperature dependences of inner groups for both dendrimers (with and without side fragments) practically coincide despite different densities of atoms inside these dendrimers. This result confirms the first theoretical assumption. The second assumption is confirmed by the 1/T1H temperature dependences of terminal groups which are similar for both dendrimers.
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Affiliation(s)
- Nadezhda N Sheveleva
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Denis A Markelov
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia.
| | - Mikhail A Vovk
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Maria E Mikhailova
- St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg, 199034, Russia
| | - Irina I Tarasenko
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoi Prospect 31, V.O., St. Petersburg, 199004, Russia
| | - Igor M Neelov
- St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO University), Kronverkskiy pr. 49, St. Petersburg, 197101, Russia
| | - Erkki Lähderanta
- Laboratory of Physics, Lappeenranta University of Technology, Box 20, 53851, Lappeenranta, Finland
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35
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Min KI, Kim DH, Lee HJ, Lin L, Kim DP. Direct Synthesis of a Covalently Self-Assembled Peptide Nanogel from a Tyrosine-Rich Peptide Monomer and Its Biomineralized Hybrids. Angew Chem Int Ed Engl 2018; 57:5630-5634. [PMID: 29569831 DOI: 10.1002/anie.201713261] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2017] [Revised: 02/22/2018] [Indexed: 12/21/2022]
Abstract
There has been significant progress in the self-assembly of biological materials, but the one-step covalent peptide self-assembly for well-defined nanostructures is still in its infancy. Inspired by the biological functions of tyrosine, a covalently assembled fluorescent peptide nanogel is developed by a ruthenium-mediated, one-step photo-crosslinking of tyrosine-rich short peptides under the visible light within 6 minutes. The covalently assembled peptide nanogel is stable in various organic solvents and different pH levels, unlike those made from vulnerable non-covalent assemblies. The semipermeable peptide nanogel with a high density of redox-active tyrosine acts as a novel nano-bioreactor, allowing the formation of uniform metal-peptide hybrids by selective biomineralization under UV irradiation. As such, this peptide nanogel could be useful in the design of novel nanohybrids and peptidosomes possessing functional nanomaterials.
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Affiliation(s)
- Kyoung-Ik Min
- Department of Mechanical Engineering, University of California, Berkeley, CA, 94720, USA
| | - Dong-Hwi Kim
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS), Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Hyune-Jea Lee
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS), Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
| | - Liwei Lin
- Department of Mechanical Engineering, University of California, Berkeley, CA, 94720, USA
| | - Dong-Pyo Kim
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS), Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 790-784, Republic of Korea
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36
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Min KI, Kim DH, Lee HJ, Lin L, Kim DP. Direct Synthesis of a Covalently Self-Assembled Peptide Nanogel from a Tyrosine-Rich Peptide Monomer and Its Biomineralized Hybrids. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713261] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Kyoung-Ik Min
- Department of Mechanical Engineering; University of California; Berkeley CA 94720 USA
| | - Dong-Hwi Kim
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS); Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 790-784 Republic of Korea
| | - Hyune-Jea Lee
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS); Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 790-784 Republic of Korea
| | - Liwei Lin
- Department of Mechanical Engineering; University of California; Berkeley CA 94720 USA
| | - Dong-Pyo Kim
- Center for Intelligent Microprocess of Pharmaceutical Synthesis (CIMPS); Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 790-784 Republic of Korea
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37
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Watanabe A, Niu J, Lunn DJ, Lawrence J, Knight AS, Zhang M, Hawker CJ. PET‐RAFT as a facile strategy for preparing functional lipid–polymer conjugates. ACTA ACUST UNITED AC 2018. [DOI: 10.1002/pola.29007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Akira Watanabe
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
| | - Jia Niu
- Department of ChemistryBoston CollegeChestnut Hill Massachusetts02467
- California NanoSystems Institute, University of CaliforniaSanta Barbara California93106
| | - David J. Lunn
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
- Department of ChemistryUniversity of OxfordOxfordOX1 3TA United Kingdom
| | - Jimmy Lawrence
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
| | - Abigail S. Knight
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
| | - Mengwen Zhang
- Department of Chemical EngineeringUniversity of CaliforniaSanta Barbara California93106
| | - Craig J. Hawker
- Materials Research LaboratoryUniversity of CaliforniaSanta Barbara California93106
- California NanoSystems Institute, University of CaliforniaSanta Barbara California93106
- Materials DepartmentUniversity of CaliforniaSanta Barbara California93106
- Department of Chemistry & BiochemistryUniversity of CaliforniaSanta Barbara California93106
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38
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Self-assembling asymmetric peptide-dendrimer micelles - a platform for effective and versatile in vitro nucleic acid delivery. Sci Rep 2018; 8:4832. [PMID: 29556057 PMCID: PMC5859181 DOI: 10.1038/s41598-018-22902-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 02/12/2018] [Indexed: 12/18/2022] Open
Abstract
Despite advancements in the development of high generation cationic-dendrimer systems for delivery of nucleic acid-based therapeutics, commercially available chemical agents suffer from major drawbacks such as cytotoxicity while being laborious and costly to synthesize. To overcome the aforementioned limitations, low-generation cationic peptide asymmetric dendrimers with side arm lipid (cholic and decanoic acid) conjugation were designed, synthesized and systematically screened for their ability to self-assemble into micelles using dynamic light scattering. Cytotoxicity profiling revealed that our entire asymmetric peptide dendrimer library when trialled alone, or as asymmetric dendrimer micelle-nucleic acid complexes, were non-cytotoxic across a broad concentration range. Further, the delivery efficiency of asymmetric peptide dendrimers in H-4-II-E (rat hepatoma), H2K (mdx mouse myoblast), and DAOY (human medulloblastoma) cells demonstrated that cholic acid-conjugated asymmetric dendrimers possess far superior delivery efficiency when compared to the commercial standards, Lipofectamine 2000 or Lipofectin®.
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39
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Enhanced intracellular peptide delivery by multivalent cell-penetrating peptide with bioreducible linkage. Bioorg Med Chem Lett 2018; 28:378-381. [DOI: 10.1016/j.bmcl.2017.12.035] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 12/06/2017] [Accepted: 12/14/2017] [Indexed: 12/19/2022]
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40
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Jiang L, Chen W, Zhou S, Li C, Zhang X, Wu W, Jiang X. Dendritic phospholipid-based drug delivery systems. Biomater Sci 2018; 6:774-778. [DOI: 10.1039/c7bm01001j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A class of new dendritic phospholipid compounds with different hydrophilic dendritic poly(l-lysine) peripheries from generations 1 (G1) to 3 (G3) (DPL-1 to DPL-3) were synthesised and nano-drug delivery systems based on these compounds were prepared (DPN-2 and DPN-3).
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Affiliation(s)
- Lei Jiang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Weizhi Chen
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Sensen Zhou
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Cheng Li
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Xiaoke Zhang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Wei Wu
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
| | - Xiqun Jiang
- MOE Key Laboratory of High Performance Polymer Materials and Technology
- and Department of Polymer Science & Engineering
- College of Chemistry & Chemical Engineering
- Nanjing University
- Nanjing
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41
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Martinho N, Silva LC, Florindo HF, Brocchini S, Barata T, Zloh M. Practical computational toolkits for dendrimers and dendrons structure design. J Comput Aided Mol Des 2017; 31:817-827. [DOI: 10.1007/s10822-017-0041-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 07/06/2017] [Indexed: 11/29/2022]
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42
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Dual-targeting peptide probe for sequence- and structure-sensitive sensing of serum albumin. Biosens Bioelectron 2017; 94:657-662. [DOI: 10.1016/j.bios.2017.03.067] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 03/24/2017] [Accepted: 03/31/2017] [Indexed: 01/06/2023]
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43
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Breger JC, Muttenthaler M, Delehanty JB, Thompson DA, Oh E, Susumu K, Deschamps JR, Anderson GP, Field LD, Walper SA, Dawson PE, Medintz IL. Nanoparticle cellular uptake by dendritic wedge peptides: achieving single peptide facilitated delivery. NANOSCALE 2017; 9:10447-10464. [PMID: 28703833 DOI: 10.1039/c7nr03362a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Significant efforts are being undertaken to optimize the cargo carrying capacity and especially the cellular delivery efficiency of functionalized nanoparticles for applications in biological research and pharmacological delivery. One approach to increasing nanoparticle surface cargo display capacity is to decrease the number of moieties required for mediating cellular delivery by improving their efficiency. We describe a series of multivalent cell penetrating peptide (CPP) dendrimers that facilitate rapid cellular delivery of prototypical nanoparticle-semiconductor quantum dots (QDs). The modular CPP dendrimers were assembled through an innovative convergent oxime ligation strategy between (Arg9)n motifs and a dendritic QD-coordination scaffold. Dendrimeric peptides sequentially incorporate a terminal (His)6 motif for metal-affinity QD coordination, a Pro9 spacer, a branching poly-lysine scaffold, and wedged display of (Arg9)n binding motifs with n = 1×, 2×, 4×, 8×, 16× multivalency. QD dendrimer display capacity was estimated using structural simulations and QD-(Arg9)1-16 conjugates characterized by dynamic light scattering along with surface plasmon resonance-based binding assays to heparan sulfate proteoglycan surfaces. Cellular uptake via endocytosis was confirmed and peptide delivery kinetics investigated as a function of QD-(Arg9)1-16 conjugate exposure time and QD assembly ratio where cellular viability assays reflected no overt cytotoxicity. The ability of single dendrimer conjugates to facilitate cellular uptake was confirmed for QD-(Arg9)2-16 repeats along with the ability to deliver >850 kDa of protein cargo per QD. Minimizing the number of CPPs required for cellular uptake is critical for expanding nanoparticle cargo carrying capacity and can allow for inclusion of additional sensors, therapeutics and contrast agents on their surface.
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Affiliation(s)
- Joyce C Breger
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA. and American Society for Engineering Education, Washington, DC 20036, USA
| | - Markus Muttenthaler
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA and Institute for Molecular Bioscience, The University of Queensland, 4072 St Lucia, Brisbane, Australia
| | - James B Delehanty
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
| | - Darren A Thompson
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA and University of Idaho, Coeur d'Alene, ID 83814, USA
| | - Eunkeu Oh
- Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, DC 20375, USA and Sotera Defense Solutions, Inc., Columbia, MD 21046, USA
| | - Kimihiro Susumu
- Optical Sciences Division, Code 5600, U.S. Naval Research Laboratory, Washington, DC 20375, USA and Sotera Defense Solutions, Inc., Columbia, MD 21046, USA
| | - Jeffrey R Deschamps
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
| | - George P Anderson
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
| | - Lauren D Field
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA. and Fischell Department of Bioengineering, University of Maryland, College Park, MD 20742, USA
| | - Scott A Walper
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
| | - Philip E Dawson
- Department of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Igor L Medintz
- Center for Bio/Molecular Science and Engineering, Code 6900, U.S. Naval Research Laboratory, Washington, DC 20375, USA.
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44
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Wang M, Wu B, Tucker JD, Lu P, Lu Q. A combinatorial library of triazine-cored polymeric vectors for pDNA delivery in vitro and in vivo. J Mater Chem B 2017; 5:3907-3918. [PMID: 32264252 DOI: 10.1039/c6tb03311c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A set of triazine-cored cationic amphiphilic polymers (TAPs) composed of low molecular weight (Mw) polyethylenimine (LPEI, B) and amphiphilic Jeffamine (A) were prepared with controllable composition and molecular size, and further characterized for plasmid DNA (pDNA) delivery both in vitro and in vivo. These new polymers condensed pDNA efficiently at a polymer/pDNA weight ratio of 5 with particle sizes below 200 nm. The introduction of Jeffamine in the polymers significantly improved the cellular uptake of pDNA, but without increasing its toxicity compared with the parent LPEI. The best formulation resulted in 6- and 29-fold transfection efficiencies of PEI 25k in vitro and in vivo in mdx mice, respectively. Higher transfection efficiency was achieved with more lipophilic A1/A3-based polymers in vitro, with 1A11B3 and 1A12B3 showing the greatest delivery performance. However, the lipophilicity of the TAPs is less critical in vivo as the less lipophilic A2/A4 constructed TAPs also performed similarly well as the more lipophilic A1/A3 constructed ones. In addition, a synergistic effect of LPEI and Jeffamine via chemical conjugation for the delivery of pDNA was revealed in transfection efficiency. These results indicate that the appropriate positive surface and particle size of polymer/pDNA complex and the composition and hydrophilic-lipophilic balance (HLB) of polymers are crucial for effective delivery, although intricate matching exists between A and B in the TAP composition. Triazine-cored cationic amphiphilic polymers are safe and potentially effective carriers for gene/drug delivery.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA.
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45
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Second Generation Amphiphilic Poly-Lysine Dendrons Inhibit Glioblastoma Cell Proliferation without Toxicity for Neurons or Astrocytes. PLoS One 2016; 11:e0165704. [PMID: 27832093 PMCID: PMC5104433 DOI: 10.1371/journal.pone.0165704] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/17/2016] [Indexed: 02/08/2023] Open
Abstract
Glioblastomas are the most common malignant primary brain tumours in adults and one of the most aggressive and difficult-to-treat cancers. No effective treatment exits actually for this tumour and new therapeutic approaches are needed for this disease. One possible innovative approach involves the nanoparticle-mediated specific delivery of drugs and/or genetic material to glioblastoma cells where they can provide therapeutic benefits. In the present work, we have synthesised and characterised several second generation amphiphilic polylysine dendrons to be used as siRNA carriers. We have found that, in addition to their siRNA binding properties, these new compounds inhibit the proliferation of two glioblastoma cell lines while being nontoxic for non-tumoural central nervous system cells like neurons and glia, cell types that share the anatomical space with glioblastoma cells during the course of the disease. The selective toxicity of these nanoparticles to glioblastoma cells, as compared to neurons and glial cells, involves mitochondrial depolarisation and reactive oxygen species production. This selective toxicity, together with the ability to complex and release siRNA, suggests that these new polylysine dendrons might offer a scaffold in the development of future nanoparticles designed to restrict the proliferation of glioblastoma cells.
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46
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Kwok A, Eggimann GA, Heitz M, Reymond JL, Hollfelder F, Darbre T. Efficient Transfection of siRNA by Peptide Dendrimer-Lipid Conjugates. Chembiochem 2016; 17:2223-2229. [DOI: 10.1002/cbic.201600485] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Albert Kwok
- Department of Biochemistry; University of Cambridge; 80 Tennis Court Road Cambridge CB2 1GA UK
| | - Gabriela A. Eggimann
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Marc Heitz
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Florian Hollfelder
- Department of Biochemistry; University of Cambridge; 80 Tennis Court Road Cambridge CB2 1GA UK
| | - Tamis Darbre
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
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47
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Filipe LCS, Campos SRR, Machuqueiro M, Darbre T, Baptista AM. Structuring Peptide Dendrimers through pH Modulation and Substrate Binding. J Phys Chem B 2016; 120:10138-10152. [DOI: 10.1021/acs.jpcb.6b05905] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Luís C. S. Filipe
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Sara R. R. Campos
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
| | - Miguel Machuqueiro
- Centro
de Química e Bioquímica and Departamento de Química
e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, 1749-016 Lisboa, Portugal
| | - Tamis Darbre
- Department
of Chemistry and Biochemistry, University of Bern, Freiestrasse
3, 3012 Bern, Switzerland
| | - António M. Baptista
- Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN, 2780-157 Oeiras, Portugal
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Lombardo D, Calandra P, Bellocco E, Laganà G, Barreca D, Magazù S, Wanderlingh U, Kiselev MA. Effect of anionic and cationic polyamidoamine (PAMAM) dendrimers on a model lipid membrane. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2769-2777. [PMID: 27521487 DOI: 10.1016/j.bbamem.2016.08.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 08/02/2016] [Accepted: 08/07/2016] [Indexed: 12/25/2022]
Abstract
In spite of the growing variety of biological applications of dendrimer-based nanocarriers, a major problem of their potential applications in bio-medicine is related to the disruption of lipid bilayers and the cytotoxicity caused by the aggregation processes involved onto cellular membranes. With the aim to study model dendrimer-biomembrane interaction, the self-assembly processes of a mixture of charged polyamidoamine (PAMAM) dendrimers and dipalmitoylphosphatidylcholine (DPPC) lipids were investigated by means of Zeta potential analysis, Raman and x-ray scattering. Zwitterionic DPPC liposomes showed substantially different behaviors during their interaction with negatively charged (generation G=2.5) sodium carboxylate terminated (COO- Na+) dendrimers or positively charged (generation G=3.0) amino terminated (-NH2) dendrimers. More specifically the obtained results evidence the sensitive interactions between dendrimer terminals and lipid molecules at the surface of the liposome, with an enhancement of the liposome surface zeta potential, as well as in the hydrophobic region of the bilayers, where dendrimer penetration produce a perturbation of the hydrophobic alkyl chains of the bilayers. Analysis of the SAXS structure factor with a suitable model for the inter-dendrimers electrostatic potential allows an estimation of an effective charge of 15 ǀeǀ for G=2.5 and 7.6 ǀeǀ for G=3.0 PAMAM dendrimers. Only a fraction (about 1/7) of this charge contributes to the linear increase of liposome zeta-potential with increasing PAMAM/DPPC molar fraction. The findings of our investigation may be applied to rationalize the effect of the nanoparticles electrostatic interaction in solution environments for the design of new drug carriers combining dendrimeric and liposomal technology.
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Affiliation(s)
- Domenico Lombardo
- Consiglio Nazionale delle Ricerche, Istituto per i Processi Chimico-Fisici, Viale F. S. D'Alcontres 37, 98158 Messina, Italy.
| | - Pietro Calandra
- Consiglio Nazionale delle Ricerche, Istituto per lo Studio dei Materiali Nanostrutturati, Via Salaria km 29.300, Monterotondo Stazione, 00015 Roma, Italy
| | - Ersilia Bellocco
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Giuseppina Laganà
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Davide Barreca
- Dipartimento di Scienze chimiche, biologiche, farmaceutiche ed ambientali, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Salvatore Magazù
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy; LE STUDIUM, Loire Valley Institute for Advanced Studies, Orléans & Tours; and CBM (CNRS), rue Charles Sandron, 45071 Orléans, France
| | - Ulderico Wanderlingh
- Dipartimento di Scienze Matematiche e Informatiche, Scienze Fisiche e Scienze della Terra, Università di Messina, Viale Ferdinando Stagno d'Alcontres 31, 98166 Messina, Italy
| | - Mikhail A Kiselev
- Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Ulica Joliot-Curie 6, Dubna, Moscow 141980, Russia
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Kwok A, McCarthy D, Hart SL, Tagalakis AD. Systematic Comparisons of Formulations of Linear Oligolysine Peptides with siRNA and Plasmid DNA. Chem Biol Drug Des 2016; 87:747-63. [PMID: 26684657 PMCID: PMC4991294 DOI: 10.1111/cbdd.12709] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 11/26/2015] [Accepted: 11/27/2015] [Indexed: 01/18/2023]
Abstract
The effects of lysine peptide lengths on DNA and siRNA packaging and delivery were studied using four linear oligolysine peptides with 8 (K8), 16 (K16), 24 (K24) and 32 (K32) lysines. Oligolysine peptides with 16 lysines or longer were effective for stable monodisperse particle formation and optimal transfection efficiency with plasmid DNA (pDNA), but K8 formulations were less stable under anionic heparin challenge and consequently displayed poor transfection efficiency. However, here we show that the oligolysines were not able to package siRNA to form stable complexes, and consequently, siRNA transfection was unsuccessful. These results indicate that the physical structure and length of cationic peptides and their charge ratios are critical parameters for stable particle formation with pDNA and siRNA and that without packaging, delivery and transfection cannot be achieved.
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Affiliation(s)
- Albert Kwok
- Experimental and Personalised Medicine SectionUCL Institute of Child HealthUniversity College London30 Guilford StreetLondonWC1N 1EHUK
- Present address: Department of Clinical Biochemistry University of CambridgeBox 289, Addenbrooke's HospitalCambridgeCB2 0QQUK
| | - David McCarthy
- UCL School of Pharmacy29‐39 Brunswick SquareLondonWC1N 1AXUK
| | - Stephen L. Hart
- Experimental and Personalised Medicine SectionUCL Institute of Child HealthUniversity College London30 Guilford StreetLondonWC1N 1EHUK
| | - Aristides D. Tagalakis
- Experimental and Personalised Medicine SectionUCL Institute of Child HealthUniversity College London30 Guilford StreetLondonWC1N 1EHUK
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50
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Cai X, Jin R, Wang J, Yue D, Jiang Q, Wu Y, Gu Z. Bioreducible Fluorinated Peptide Dendrimers Capable of Circumventing Various Physiological Barriers for Highly Efficient and Safe Gene Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5821-5832. [PMID: 26887907 DOI: 10.1021/acsami.5b11545] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Polymeric vectors have shown great promise in the development of safe and efficient gene delivery systems; however, only a few have been developed in clinical settings due to poor transport across multiple physiological barriers. To address this issue and promote clinical translocation of polymeric vectors, a new type of polymeric vector, bioreducible fluorinated peptide dendrimers (BFPDs), was designed and synthesized by reversible cross-linking of fluorinated low generation peptide dendrimers. Through masterly integration all of the features of reversible cross-linking, fluorination, and polyhedral oligomeric silsesquioxane (POSS) core-based peptide dendrimers, this novel vector exhibited lots of unique features, including (i) inactive surface to resist protein interactions; (ii) virus-mimicking surface topography to augment cellular uptake; (iii) fluorination-mediated efficient cellular uptake, endosome escape, cytoplasm trafficking, and nuclear entry, and (iv) disulfide-cleavage-mediated polyplex disassembly and DNA release that allows efficient DNA transcription. Noteworthy, all of these features are functionally important and can synergistically facilitate DNA transport from solution to the nucleus. As a consequences, BFPDs showed excellent gene transfection efficiency in several cell lines (∼95% in HEK293 cells) and superior biocompatibility compared with polyethylenimine (PEI). Meanwhile BFPDs provided excellent serum resistance in gene delivery. More importantly, BFPDs offer considerable in vivo gene transfection efficiency (in muscular tissues and in HepG2 tumor xenografts), which was approximately 77-fold higher than that of PEI in luciferase activity. These results suggest bioreducible fluorinated peptide dendrimers are a new class of highly efficient and safe gene delivery vectors and should be used in clinical settings.
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Affiliation(s)
- Xiaojun Cai
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Rongrong Jin
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Jiali Wang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Dong Yue
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Qian Jiang
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Yao Wu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
| | - Zhongwei Gu
- National Engineering Research Center for Biomaterials, Sichuan University , Chengdu, Sichuan 610064, P. R. China
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