1
|
Biscari G, Fan Y, Namata F, Fiorica C, Malkoch M, Palumbo FS, Pitarresi G. Antibacterial Broad-Spectrum Dendritic/Gellan Gum Hybrid Hydrogels with Rapid Shape-Forming and Self-Healing for Wound Healing Application. Macromol Biosci 2023; 23:e2300224. [PMID: 37590124 DOI: 10.1002/mabi.202300224] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/31/2023] [Indexed: 08/19/2023]
Abstract
Treating wound infections is a difficult task ever since pathogenic bacteria started to develop resistance to common antibiotics. The present study develops hybrid hydrogels based on the formation of a polyelectrolyte complex between the anionic charges of dopamine-functionalized Gellan Gum (GG-DA) and the cationic moieties of the TMP-G2-alanine dendrimer. The hydrogels thus obtained can be doubly crosslinked with CaCl2 , obtaining solid hydrogels. Or, by oxidizing dopamine to GG-DA, possibly causing further interactions such as Schiff Base and Michael addition to take place, hydrogels called injectables can be obtained. The latter have shear-thinning and self-healing properties (efficiency up to 100%). Human dermal fibroblasts (HDF), human epidermal keratinocytes (HaCaT), and mouse monocyte cells (RAW 264.7), after incubation with hydrogels, in most cases show cell viability up to 100%. Hydrogels exhibit adhesive behavior on various substrates, including porcine skin. At the same time, the dendrimer serves to crosslink the hydrogels and endows them with excellent broad-spectrum microbial eradication activity within four hours, evaluated using Staphylococcus aureus 2569 and Escherichia coli 178. Using the same GG-DA/TMP-G2-alanine ratios hybrid hydrogels with tunable properties and potential for wound dressing applications can be produced.
Collapse
Affiliation(s)
- Giuseppina Biscari
- KTH Royal Institute of Technology, Teknikringen 56-58, Stockholm, SE-100 44, Sweden
| | - Yanmiao Fan
- University of Palermo, Via Archirafi 32, Palermo, 90123, Italy
| | - Faridah Namata
- University of Palermo, Via Archirafi 32, Palermo, 90123, Italy
| | - Calogero Fiorica
- KTH Royal Institute of Technology, Teknikringen 56-58, Stockholm, SE-100 44, Sweden
| | - Michael Malkoch
- University of Palermo, Via Archirafi 32, Palermo, 90123, Italy
| | | | - Giovanna Pitarresi
- KTH Royal Institute of Technology, Teknikringen 56-58, Stockholm, SE-100 44, Sweden
| |
Collapse
|
2
|
Arkas M, Giannakopoulos K, Favvas EP, Papageorgiou S, Theodorakopoulos GV, Giannoulatou A, Vardavoulias M, Giannakoudakis DA, Triantafyllidis KS, Georgiou E, Pashalidis I. Comparative Study of the U(VI) Adsorption by Hybrid Silica-Hyperbranched Poly(ethylene imine) Nanoparticles and Xerogels. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:nano13111794. [PMID: 37299697 DOI: 10.3390/nano13111794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/12/2023]
Abstract
Two different silica conformations (xerogels and nanoparticles), both formed by the mediation of dendritic poly (ethylene imine), were tested at low pHs for problematic uranyl cation sorption. The effect of crucial factors, i.e., temperature, electrostatic forces, adsorbent composition, accessibility of the pollutant to the dendritic cavities, and MW of the organic matrix, was investigated to determine the optimum formulation for water purification under these conditions. This was attained with the aid of UV-visible and FTIR spectroscopy, dynamic light scattering (DLS), ζ-potential, liquid nitrogen (LN2) porosimetry, thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Results highlighted that both adsorbents have extraordinary sorption capacities. Xerogels are cost-effective since they approximate the performance of nanoparticles with much less organic content. Both adsorbents could be used in the form of dispersions. The xerogels, though, are more practicable materials since they may penetrate the pores of a metal or ceramic solid substrate in the form of a precursor gel-forming solution, producing composite purification devices.
Collapse
Affiliation(s)
- Michael Arkas
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | - Konstantinos Giannakopoulos
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | - Evangelos P Favvas
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | - Sergios Papageorgiou
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | - George V Theodorakopoulos
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | - Artemis Giannoulatou
- National Centre for Scientific Research "Demokritos", Institute of Nanoscience and Nanotechnology, 15310 Athens, Greece
| | | | | | | | - Efthalia Georgiou
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| | - Ioannis Pashalidis
- Department of Chemistry, University of Cyprus, P.O. Box 20537, 1678 Nicosia, Cyprus
| |
Collapse
|
3
|
Kang N, Thuy LT, Dongquoc V, Choi JS. Conjugation of Short Oligopeptides to a Second-Generation Polyamidoamine Dendrimer Shows Antibacterial Activity. Pharmaceutics 2023; 15:pharmaceutics15031005. [PMID: 36986864 PMCID: PMC10053621 DOI: 10.3390/pharmaceutics15031005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/15/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
The growing evolution of bacterial resistance to antibiotics represents a global issue that not only impacts healthcare systems but also political and economic processes. This necessitates the development of novel antibacterial agents. Antimicrobial peptides have shown promise in this regard. Thus, in this study, a new functional polymer was synthesized by joining a short oligopeptide sequence (Phe-Lys-Phe-Leu, FKFL) to the surface of a second-generation polyamidoamine (G2 PAMAM) dendrimer as an antibacterial component. This method of synthesis proved simple and resulted in a high conjugation yield of the product FKFL-G2. To determine its antibacterial potential, FKFL-G2 was subsequently analyzed via mass spectrometry, a cytotoxicity assay, bacterial growth assay, colony-forming unit assay, membrane permeabilization assay, transmission electron microscopy, and biofilm formation assay. FKFL-G2 was found to exhibit low toxicity to noncancerous NIH3T3 cells. Additionally, FKFL-G2 had an antibacterial effect on Escherichia coli and Staphylococcus aureus strains by interacting with and disrupting the bacterial cell membrane. Based on these findings, FKFL-G2 shows promise as a potential antibacterial agent.
Collapse
Affiliation(s)
- Namyoung Kang
- Department of Biochemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Le Thi Thuy
- Department of Biochemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Viet Dongquoc
- Department of Materials Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Joon Sig Choi
- Department of Biochemistry, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
| |
Collapse
|
4
|
Arkas M, Vardavoulias M, Kythreoti G, Giannakoudakis DA. Dendritic Polymers in Tissue Engineering: Contributions of PAMAM, PPI PEG and PEI to Injury Restoration and Bioactive Scaffold Evolution. Pharmaceutics 2023; 15:pharmaceutics15020524. [PMID: 36839847 PMCID: PMC9966633 DOI: 10.3390/pharmaceutics15020524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/26/2023] [Accepted: 01/30/2023] [Indexed: 02/09/2023] Open
Abstract
The capability of radially polymerized bio-dendrimers and hyperbranched polymers for medical applications is well established. Perhaps the most important implementations are those that involve interactions with the regenerative mechanisms of cells. In general, they are non-toxic or exhibit very low toxicity. Thus, they allow unhindered and, in many cases, faster cell proliferation, a property that renders them ideal materials for tissue engineering scaffolds. Their resemblance to proteins permits the synthesis of derivatives that mimic collagen and elastin or are capable of biomimetic hydroxy apatite production. Due to their distinctive architecture (core, internal branches, terminal groups), dendritic polymers may play many roles. The internal cavities may host cell differentiation genes and antimicrobial protection drugs. Suitable terminal groups may modify the surface chemistry of cells and modulate the external membrane charge promoting cell adhesion and tissue assembly. They may also induce polymer cross-linking for healing implementation in the eyes, skin, and internal organ wounds. The review highlights all the different categories of hard and soft tissues that may be remediated with their contribution. The reader will also be exposed to the incorporation of methods for establishment of biomaterials, functionalization strategies, and the synthetic paths for organizing assemblies from biocompatible building blocks and natural metabolites.
Collapse
Affiliation(s)
- Michael Arkas
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece
- Correspondence: ; Tel.: +30-210-650-3669
| | | | - Georgia Kythreoti
- Institute of Nanoscience Nanotechnology, NCSR “Demokritos”, Patriarchou Gregoriou Street, 15310 Athens, Greece
| | | |
Collapse
|
5
|
Le M, Huang W, Ma Z, Shi Z, Li Q, Lin C, Wang L, Jia YG. Facially Amphiphilic Skeleton-Derived Antibacterial Cationic Dendrimers. Biomacromolecules 2023; 24:269-282. [PMID: 36495302 DOI: 10.1021/acs.biomac.2c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
It is urgent to develop biocompatible and high-efficiency antimicrobial agents since microbial infections have always posed serious challenges to human health. Herein, through the marriage of facially amphiphilic skeletons and cationic dendrimers, high-density positively charged dendrimers D-CA6-N+ (G2) and D-CA2-N+ (G1) were designed and synthesized using the "branch" of facially amphiphilic bile acids, followed by their modification with quaternary ammonium charges. Both dendrimers could self-assemble into nanostructured micelles in aqueous solution. D-CA6-N+ displays potent antibacterial activity against Staphylococcus aureus and Escherichia coli, with minimum inhibitory concentrations (MICs) as low as 7.50 and 7.79 μM, respectively, and has an evidently stronger antibacterial activity than D-CA2-N+. Moreover, D-CA6-N+ can kill S. aureus faster than E. coli. The facial amphiphilicity of the bile acid skeleton facilitates the selective destruction of bacterial membranes and endows dendrimers with negligible hemolysis and cytotoxicity even under a high concentration of 16× MIC. In vivo studies show that D-CA6-N+ is much more effective and safer than penicillin G in treating S. aureus infection and promoting wound healing, which suggests facially amphiphilic skeleton-derived cationic dendrimers can be a promising approach to effectively enhance antibacterial activity and biocompatibility of antibacterial agent, simultaneously.
Collapse
Affiliation(s)
- Mengqi Le
- School of Biomedical Science and Engineering, South China University of Technology, Guangzhou510006, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Wen Huang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Zunwei Ma
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Zhifeng Shi
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Qingtao Li
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Caihong Lin
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Lin Wang
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| | - Yong-Guang Jia
- School of Materials Science and Engineering, South China University of Technology, Guangzhou510641, China.,National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou510006, China.,Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou510006, China.,Innovation Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou510006, China
| |
Collapse
|
6
|
Asgari S, Mohammadi Ziarani G, Badiei A, Rostami M, Kiani M. Reduced cytotoxicity and boosted antibacterial activity of a hydrophilic nano-architecture magnetic nitrogen-rich copper-based MOF. MATERIALS TODAY COMMUNICATIONS 2022; 33:104393. [DOI: 10.1016/j.mtcomm.2022.104393] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
|
7
|
Omidi R, Alizadeh P, Soltani M. Poly (amido amine) G5 modified mesoporous silica-based pH-responsive drug-delivery system for tetracycline and ibuprofen. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2071270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Roya Omidi
- Department of Materials Science and Engineering, Tarbiat Modares University, Tehran, Iran
| | - Parvin Alizadeh
- Department of Materials Science and Engineering, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Soltani
- Department of Materials Science and Engineering, Tarbiat Modares University, Tehran, Iran
| |
Collapse
|
8
|
Shabanloo R, Akbari S, Mirsalehi M. Hybrid electrospun scaffolds based on polylactic acid/ PAMAM dendrimer/gemini surfactant for enhancement of synergistic antibacterial ability for biomedical application. Biomed Mater 2022; 17. [PMID: 35487203 DOI: 10.1088/1748-605x/ac6bd7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 04/29/2022] [Indexed: 11/11/2022]
Abstract
Hybrid electrospun scaffolds based on poly (L-lactic acid) (PLLA) / poly (amidoamine) (PAMAM-G2) dendrimer / gemini surfactant were fabricated for the enhancement of synergistic antibacterial activities. The second generation of poly (amidoamine) (PAMAM-G2) and cationic gemini surfactant were utilized to functionalize the optimum electrospun scaffolds. The gelatination process was utilized to improve the wettability of PLLA scaffolds to extend cell attachment and cell proliferation. PLLA nanofibrous scaffolds were characterized by energy dispersion X-ray (EDX), Scanning electron microscopy (SEM) images, mechanical properties, water contact angle, Fourier transform infrared (FTIR) spectroscopy, zeta potential and antibacterial assessment. In vitro cell biocompatibility was evaluated by MTT assay and morphology of PC-12 cells cultured on hybrid nanofibrous scaffolds and gelatinized ones. The results indicated that the optimum scaffolds could successfully modify the characteristics of PLLA scaffolds leading to much more appropriate physical and chemical properties. In addition, gelatinized nanofibrous scaffolds reveal more wettability enhancing cell attachment and proliferation. Furthermore, using poly (amidoamine) (PAMAM-G2) and gemini surfactant reveals synergetic antibacterial activity due to the competition between both cationic groups of PAMAM and gemini surfactant. Finally, improved cell adhesion and cell viability on modified scaffolds were confirmed. These favorable properties give a chance for these scaffolds to be used in a wide variety of biomedical applications.
Collapse
Affiliation(s)
- Rasool Shabanloo
- Textile engineering, Amirkabir University of Technology, No. 350, Hafez Ave, Valiasr Square, Tehran, Iran 1591634311, Tehran, 1591634311, Iran (the Islamic Republic of)
| | - Somaye Akbari
- Department of Textile Engineering, Amirkabir University of Technology, No. 350, Hafez Ave, Valiasr Square, Tehran, Iran 1591634311, Tehran, Tehran, 1591634311, Iran (the Islamic Republic of)
| | - Marjan Mirsalehi
- Iran University of Medical Sciences, Iran University of Medical Sciences Shahid Hemmat Highway Tehran 14496-14535, IRAN, Tehran, Tehran, 1449614535, Iran (the Islamic Republic of)
| |
Collapse
|
9
|
The Antibacterial Effect of PEGylated Carbosilane Dendrimers on P. aeruginosa Alone and in Combination with Phage-Derived Endolysin. Int J Mol Sci 2022; 23:ijms23031873. [PMID: 35163794 PMCID: PMC8836974 DOI: 10.3390/ijms23031873] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 01/27/2022] [Accepted: 02/02/2022] [Indexed: 12/12/2022] Open
Abstract
The search for new microbicide compounds is of an urgent need, especially against difficult-to-eradicate biofilm-forming bacteria. One attractive option is the application of cationic multivalent dendrimers as antibacterials and also as carriers of active molecules. These compounds require an adequate hydrophilic/hydrophobic structural balance to maximize the effect. Herein, we evaluated the antimicrobial activity of cationic carbosilane (CBS) dendrimers unmodified or modified with polyethylene glycol (PEG) units, against planktonic and biofilm-forming P. aeruginosa culture. Our study revealed that the presence of PEG destabilized the hydrophilic/hydrophobic balance but reduced the antibacterial activity measured by microbiological cultivation methods, laser interferometry and fluorescence microscopy. On the other hand, the activity can be improved by the combination of the CBS dendrimers with endolysin, a bacteriophage-encoded peptidoglycan hydrolase. This enzyme applied in the absence of the cationic CBS dendrimers is ineffective against Gram-negative bacteria because of the protective outer membrane shield. However, the endolysin-CBS dendrimer mixture enables the penetration through the membrane and then deterioration of the peptidoglycan layer, providing a synergic antimicrobial effect.
Collapse
|
10
|
Electrospun Bioscaffold Based on Cellulose Acetate and Dendrimer-modified Cellulose Nanocrystals for Controlled Drug Release. CARBOHYDRATE POLYMER TECHNOLOGIES AND APPLICATIONS 2022. [DOI: 10.1016/j.carpta.2022.100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
|
11
|
Zarei Z, Mirjalili M, Norooz Kermanshahi P. Optimization of Dendrimer Polyamidoamin Electrospun Nanofibers: Preparation and Properties. IRANIAN JOURNAL OF BIOTECHNOLOGY 2022; 20:e2996. [PMID: 35891957 PMCID: PMC9284246 DOI: 10.30498/ijb.2021.273730.2996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND The most common polymers in the treatment of wounds are natural (e.g., polysaccharides, proteins, and peptides) and synthetic polymers (e.g., poly-glycolic acid, polyacrylic acid, polylactic acid, and polyvinyl alcohol) due to their biodegradability, biocompatibility, and their structural resemblance to the macromolecules known to the human body. OBJECTIVES The current study aimed to develop an electrospinning method using the nanofibers of polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC)/polyamide amine (PAMAM)/tetracycline (Tet) to cover the wound. The antibacterial effect of PAMAM was also tested against E. coli and S. aureus bacteria. MATERIALS AND METHODS The morphology of the composite nanofiber was studied by a field emission scanning electron microscope. Infrared spectroscopy (FTIR) was used to characterize the nano chemical structure. RESULTS Nanofibers were evaluated based on the release of different amounts of the antibiotic tetracycline (1%, 3%, 5%, and 7% by weight) while preventing wound infection. The findings indicated that the highest-profile release of all nanofibers occurred early within 12 hours. It was found that nanofiber membranes loaded with 1%, 3%, and 5% tetracycline released drugs for over 28 days, while those containing 7% tetracycline released drugs for more than 14 days. CONCLUSIONS According to the findings related to the drug release of PVA/CMC/15% PAMAM/Tet and surface morphology of the nanofibers, the optimal amount of Tet was 5%. The results of FTIR spectroscopy indicated that the tetracycline and polyamidoamine were successfully placed in nanofibers.
Collapse
Affiliation(s)
- Zahra Zarei
- Department of Polymer and Textile Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
| | - Mohammad Mirjalili
- Department of Polymer and Textile Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran
| | - Pouriya Norooz Kermanshahi
- Department of Polymer and Textile Engineering, Yazd Branch, Islamic Azad University, Yazd, Iran,
Department of Textile, Campus de Azurém, Av. da Universidade, 4800-058 Guimarães, Portugal
| |
Collapse
|
12
|
Abdalgader A, Elejmi A, Elhrari W, Abdoorhman Z. Synthesis and antibacterial property of polyamide dendrimers based on tetraethyl-1,1,3,3-propanetetracarboxylate. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02794-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
13
|
Selective and efficient extraction of heparin by arginine-functionalized flowered mesoporous silica nanoparticles with high capacity. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.119321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
14
|
Kheraldine H, Rachid O, Habib AM, Al Moustafa AE, Benter IF, Akhtar S. Emerging innate biological properties of nano-drug delivery systems: A focus on PAMAM dendrimers and their clinical potential. Adv Drug Deliv Rev 2021; 178:113908. [PMID: 34390777 DOI: 10.1016/j.addr.2021.113908] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/17/2021] [Accepted: 07/26/2021] [Indexed: 02/06/2023]
Abstract
Drug delivery systems or vectors are usually needed to improve the bioavailability and effectiveness of a drug through improving its pharmacokinetics/pharmacodynamics at an organ, tissue or cellular level. However, emerging technologies with sensitive readouts as well as a greater understanding of physiological/biological systems have revealed that polymeric drug delivery systems are not biologically inert but can have innate or intrinsic biological actions. In this article, we review the emerging multiple innate biological/toxicological properties of naked polyamidoamine (PAMAM) dendrimer delivery systems in the absence of any drug cargo and discuss their correlation with the defined physicochemical properties of PAMAMs in terms of molecular size (generation), architecture, surface charge and chemistry. Further, we assess whether any of the reported intrinsic biological actions of PAMAMs such as their antimicrobial activity or their ability to sequester glucose and modulate key protein interactions or cell signaling pathways, can be exploited clinically such as in the treatment of diabetes and its complications.
Collapse
|
15
|
Fan Y, Mohanty S, Zhang Y, Lüchow M, Qin L, Fortuin L, Brauner A, Malkoch M. Dendritic Hydrogels Induce Immune Modulation in Human Keratinocytes and Effectively Eradicate Bacterial Pathogens. J Am Chem Soc 2021; 143:17180-17190. [PMID: 34636555 PMCID: PMC8532153 DOI: 10.1021/jacs.1c07492] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Indexed: 01/09/2023]
Abstract
Infections caused by antibiotic-resistant bacteria are globally a major threat, leading to high mortality rates and increased economic burden. Novel treatment strategies are therefore urgently needed by healthcare providers to protect people. Biomaterials that have inherent antibacterial properties and do not require the use of antibiotics present an attractive and feasible avenue to achieve this goal. Herein, we demonstrate the effect of a new class of cationic hydrogels based on amino-functional hyperbranched dendritic-linear-dendritic copolymers (HBDLDs) exhibiting excellent antimicrobial activity toward a wide range of clinical Gram-positive and Gram-negative bacteria, including drug-resistant strains isolated from wounds. Intriguingly, the hydrogels can induce the expression of the antimicrobial peptides RNase 7 and psoriasin, promoting host-mediated bacterial killing in human keratinocytes (HaCaT). Moreover, treatment with the hydrogels decreased the proinflammatory cytokine IL-1β, reactive nitrogen species (NO), and mitochondrial reactive oxygen species (ROS) in S. aureus-infected HaCaT cells, conjunctively resulting in reduced inflammation.
Collapse
Affiliation(s)
- Yanmiao Fan
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Soumitra Mohanty
- Department
of Microbiology, Tumor and Cell Biology, Karolinska Institutet, SE-17165 Stockholm, Sweden
- Division
of Clinical Microbiology, Karolinska University
Hospital, Solna, Stockholm SE-17176, Sweden
| | - Yuning Zhang
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Mads Lüchow
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Liguo Qin
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
- Institute
of Design Science and Basic Components, Xían Jiaotong University, 710049 Xían, P. R. China
| | - Lisa Fortuin
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| | - Annelie Brauner
- Department
of Microbiology, Tumor and Cell Biology, Karolinska Institutet, SE-17165 Stockholm, Sweden
- Division
of Clinical Microbiology, Karolinska University
Hospital, Solna, Stockholm SE-17176, Sweden
| | - Michael Malkoch
- School
of Chemical Science and Engineering, Fiber and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
| |
Collapse
|
16
|
Lin L, Chi J, Yan Y, Luo R, Feng X, Zheng Y, Xian D, Li X, Quan G, Liu D, Wu C, Lu C, Pan X. Membrane-disruptive peptides/peptidomimetics-based therapeutics: Promising systems to combat bacteria and cancer in the drug-resistant era. Acta Pharm Sin B 2021; 11:2609-2644. [PMID: 34589385 PMCID: PMC8463292 DOI: 10.1016/j.apsb.2021.07.014] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/08/2021] [Accepted: 07/12/2021] [Indexed: 02/05/2023] Open
Abstract
Membrane-disruptive peptides/peptidomimetics (MDPs) are antimicrobials or anticarcinogens that present a general killing mechanism through the physical disruption of cell membranes, in contrast to conventional chemotherapeutic drugs, which act on precise targets such as DNA or specific enzymes. Owing to their rapid action, broad-spectrum activity, and mechanisms of action that potentially hinder the development of resistance, MDPs have been increasingly considered as future therapeutics in the drug-resistant era. Recently, growing experimental evidence has demonstrated that MDPs can also be utilized as adjuvants to enhance the therapeutic effects of other agents. In this review, we evaluate the literature around the broad-spectrum antimicrobial properties and anticancer activity of MDPs, and summarize the current development and mechanisms of MDPs alone or in combination with other agents. Notably, this review highlights recent advances in the design of various MDP-based drug delivery systems that can improve the therapeutic effect of MDPs, minimize side effects, and promote the co-delivery of multiple chemotherapeutics, for more efficient antimicrobial and anticancer therapy.
Collapse
Affiliation(s)
- Liming Lin
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Jiaying Chi
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yilang Yan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Rui Luo
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xiaoqian Feng
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Yuwei Zheng
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Dongyi Xian
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Li
- The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510630, China
| | - Guilan Quan
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Daojun Liu
- Shantou University Medical College, Shantou 515041, China
| | - Chuanbin Wu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Chao Lu
- College of Pharmacy, Jinan University, Guangzhou 511443, China
| | - Xin Pan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| |
Collapse
|
17
|
Silver ion loaded 3-aminopropyl trimethoxysilane -modified Fe 3O 4 nanoparticles for the fabrication of carrageenan-based active packaging films. Colloids Surf B Biointerfaces 2021; 208:112085. [PMID: 34478956 DOI: 10.1016/j.colsurfb.2021.112085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 08/18/2021] [Accepted: 08/29/2021] [Indexed: 11/21/2022]
Abstract
Fe3O4 nanoparticle loaded with silver ion was prepared as a more efficient, safer, and less environmentally hazardous silver-based antibacterial nanomaterial. The Fe3O4 nanoparticle was modified using 3-aminopropyl trimethoxysilane (APTMS) to enhance the silver ion adsorption capacity and antibacterial activity. Silver ions were adsorbed on pristine Fe3O4 and Fe3O4@NH2 to enhance antibacterial activity. Energy dispersive spectroscopy (EDS) results showed that Fe3O4 adsorbed 2.74 wt% of Ag, whereas Fe3O4@NH2 adsorbed 9.88 wt%. Pristine Fe3O4NP, silver ion loaded Fe3O4 (Fe3O4-Ag), and silver ion loaded Fe3O4@NH2 (Fe3O4@NH2-Ag) were used to manufacture carrageenan-based composite films. Compared with Fe3O4-Ag, Fe3O4@NH2-Ag exhibited stronger antimicrobial activity against E. coli (8.82 vs. 5.02 log reduction) and L. monocytogenes (10.09 vs. 3.93 log reduction). While the addition of Fe3O4 significantly reduced the WCA of the carrageenan films from 61.1 ± 5.4 ° to 37.2 ± 2.1 °, the additions of Fe3O4-Ag and Fe3O4@NH2-Ag reduced the WCA of the film to a lesser extent (56.9 ± 4.6 ° and 56.9 ± 4.6 °, respectively). Fe3O4NP also improved the thermal stability of carrageenan over Fe3O4@NH2-Ag (22 °C vs. 13 °C) and UV blocking properties (T280, 0.1 ± 0.0 % vs. 3.3 ± 1.5 %).
Collapse
|
18
|
Bargathulla I, Aadhil Ashwaq B, Sathiyaraj S, Sultan Nasar A, ElangovanVellaichamy. Pegylated bis-indolyl polyurethane dendrimer: Empty drug carrier with prominent anticancer activity. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110491] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
19
|
Delyanee M, Akbari S, Solouk A. Amine-terminated dendritic polymers as promising nanoplatform for diagnostic and therapeutic agents' modification: A review. Eur J Med Chem 2021; 221:113572. [PMID: 34087497 DOI: 10.1016/j.ejmech.2021.113572] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/24/2021] [Accepted: 05/07/2021] [Indexed: 12/22/2022]
Abstract
It is often challenging to design diagnostic and therapeutic agents that fulfill all functional requirements. So, bulk and surface modifications as a common approach for biomedical applications have been suggested. There have been considerable research interests in using nanomaterials to the prementioned methods. Among all nanomaterials, dendritic materials with three-dimensional structures, host-guest properties, and nano-polymeric dimensions have received considerable attention. Amine-terminated dendritic structures including, polyamidoamine (PAMAM), polypropyleneimine (PPI), and polyethyleneimine (PEI), have been enormously utilized in bio-modification. This review briefly described the structure of these three common dendritic polymers and their use to modify diagnostic and therapeutic agents in six major applications, including drug delivery, gene delivery, biosensor, bioimaging, tissue engineering, and antimicrobial activity. The current review covers amine-terminated dendritic polymers toxicity challenging and improvement strategies as well.
Collapse
Affiliation(s)
- Mahsa Delyanee
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| | - Somaye Akbari
- Textile Engineering Department, Amirkabir University of Technology, Tehran, Iran.
| | - Atefeh Solouk
- Biomedical Engineering Department, Amirkabir University of Technology, Tehran, Iran
| |
Collapse
|
20
|
Li X, İlk S, Linares-Pastén JA, Liu Y, Raina DB, Demircan D, Zhang B. Synthesis, Enzymatic Degradation, and Polymer-Miscibility Evaluation of Nonionic Antimicrobial Hyperbranched Polyesters with Indole or Isatin Functionalities. Biomacromolecules 2021; 22:2256-2271. [PMID: 33900740 PMCID: PMC8382248 DOI: 10.1021/acs.biomac.1c00343] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
![]()
Most macromolecular
antimicrobials are ionic and thus lack miscibility/compatibility
with nonionic substrate materials. In this context, nonionic hyperbranched
polyesters (HBPs) with indole or isatin functionality were rationally
designed, synthesized, and characterized. Antimicrobial disk diffusion
assay indicated that these HBPs showed significant antibacterial activity
against 8 human pathogenic bacteria compared to small molecules with
indole or isatin groups. According to DSC measurements, up to 20%
indole-based HBP is miscible with biodegradable polyesters (polyhydroxybutyrate
or polycaprolactone), which can be attributed to the favorable hydrogen
bonding between the N–H moiety of indole and the C=O
of polyesters. HBPs with isatin or methylindole were completely immiscible
with the same matrices. None of the HBPs leaked out from plastic matrix
after being immersed in water for 5 days. The incorporation of indole
into HBPs as well as small molecules facilitated their enzymatic degradation
with PETase from Ideonella sakaiensis, while isatin
had a complex impact. Molecular docking simulations of monomeric molecules
with PETase revealed different orientations of the molecules at the
active site due to the presence of indole or isatin groups, which
could be related to the observed different enzymatic degradation behavior.
Finally, biocompatibility analysis with a mammalian cell line showed
the negligible cytotoxic effect of the fabricated HBPs.
Collapse
Affiliation(s)
- Xiaoya Li
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Sedef İlk
- Faculty of Medicine, Department of Immunology, Niğde Ömer Halisdemir University, 51240 Niǧde, Turkey.,School of Engineering Sciences in Chemistry, Biotechnology and Health, Department of Chemistry, Division of Glycoscience, KTH Royal Institute of Technology, SE-10691 Stockholm, Sweden
| | - Javier A Linares-Pastén
- Division of Biotechnology, Department of Chemistry, Lund University, P.O. Box 124, 22100 Lund, Sweden
| | - Yang Liu
- Faculty of Medicine, Department of Clinical Sciences, Orthopedics, Lund University, 22100 Lund, Sweden
| | - Deepak Bushan Raina
- Faculty of Medicine, Department of Clinical Sciences, Orthopedics, Lund University, 22100 Lund, Sweden
| | - Deniz Demircan
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - Baozhong Zhang
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| |
Collapse
|
21
|
Zhang Y, Kang K, Zhu N, Li G, Zhou X, Zhang A, Yi Q, Wu Y. Bottlebrush-like highly efficient antibacterial coating constructed using α-helical peptide dendritic polymers on the poly(styrene- b-(ethylene- co-butylene)- b-styrene) surface. J Mater Chem B 2021; 8:7428-7437. [PMID: 32662494 DOI: 10.1039/d0tb01336f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infectious diseases induced by pathogenic bacteria are the major causes for the failure of medical implants. Meanwhile, the drug-resistance is steadily developed because of the large and even inappropriate use of antibiotics. Therefore, the development of antibacterial coating with non-antibiotic-based agents on the surfaces of medical implants and devices has been an urgent need. Herein, we propose a bottlebrush-like antibacterial coating on a poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) triblock copolymer surface by UV-induced graft polymerization of poly(ethylene glycol) (PEG) acrylate terminated poly(lysine dendrimer). This PEG-conjugated antibacterial polymer possessed a substructure of α-helical backbone and cation dendrimer side chains stretching in the radial directions of the helix. The introduction of lysine peptide dendrimers endowed the prepared antibacterial polymer with precisely controlled characteristics of its local cation density, amphipathic composition as well as three-dimensional (3D) conformation to improve interactions with bacterial membranes. The antimicrobial assay and biocompatibility assay results showed that 96.83% of S. aureus and 99.99% of E. coli were killed after being in contact with the antibacterial coating, while no toxicity to mammalian cells or no hemolysis was detected. This antimicrobial activity was further confirmed by the molecular dynamics simulation results, which demonstrated that the employment of lysine peptide dendrimers enhanced the electrostatic interaction and hydrogen bonding between the brush and bacterial membranes remarkably. Such bottlebrush-like antibacterial coating constructed using α-helical peptide dendritic polymers may become an effective strategy for manufacturing antibacterial products for biomedical uses.
Collapse
Affiliation(s)
- Yujia Zhang
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, P. R. China.
| | | | | | | | | | | | | | | |
Collapse
|
22
|
Ekinci S, İlter Z, Ercan S, Çınar E, Çakmak R. Magnetite nanoparticles grafted with murexide-terminated polyamidoamine dendrimers for removal of lead (II) from aqueous solution: synthesis, characterization, adsorption and antimicrobial activity studies. Heliyon 2021; 7:e06600. [PMID: 33869845 PMCID: PMC8035525 DOI: 10.1016/j.heliyon.2021.e06600] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/18/2020] [Accepted: 03/23/2021] [Indexed: 01/05/2023] Open
Abstract
In this study, new, efficient, eco-friendly and magnetically separable nanoadsorbents, MNPs-G1-Mu and MNPs-G2-Mu, were successfully prepared by covalently grafting murexide-terminated polyamidoamine dendrimers on 3-aminopropyl functionalized silica-coated magnetite nanoparticles, and used for rapid removal of lead (II) from aqueous medium. After each adsorption process, the supernatant was successfully acquired from reaction mixture by the magnetic separation, and then analyzed by employing ICP-OES. Chemical and physical characterizations of new nanomaterials were confirmed by XRD, FT-IR, SEM, TEM, and VSM. Maximum adsorption capacities (qm) of both prepared new nanostructured adsorbents were compared with each other and also with some other adsorbents. The kinetic data were appraised by using pseudo-first-order and pseudo-second-order kinetic models. Adsorption isotherms were found to be suitable with both Langmuir and Freundlich isotherm linear equations. The maximum adsorption capacities for MNPs-G1-Mu and MNPs-G2-Mu were calculated as 208.33 mg g-1 and 232.56 mg g-1, respectively. Antimicrobial activities of nanoparticles were also examined against various microorganisms by using microdilution method. It was determined that MNPs-G1-Mu, MNPs-G2-Mu and lead (II) adsorbed MNPs-G2-Mu showed good antimicrobial activity against S. aureus ATTC 29213 and C. Parapsilosis ATTC 22019. MNPs-G1-Mu also showed antimicrobial activity against C. albicans ATTC 10231.
Collapse
Affiliation(s)
- Selma Ekinci
- Department of Chemistry, Faculty of Science and Art, Batman University, Batman, 72100, Turkey
| | - Zülfiye İlter
- Department of Chemistry, Faculty of Science, Fırat University, Elazığ, 23000, Turkey
| | - Selami Ercan
- Department of Nursing, School of Health Sciences, Batman University, Batman, 72060, Turkey
| | - Ercan Çınar
- Department of Nursing, School of Health Sciences, Batman University, Batman, 72060, Turkey
| | - Reşit Çakmak
- Medical Laboratory Techniques Program, Vocational School of Health Services, Batman University, Batman, 72060, Turkey
| |
Collapse
|
23
|
Zhang H, Wang W, Wei L, Wu D, Cheng J, Gao F. Fabrication of PAMAM antimicrobial monolayer via UV induced grafting on the surface of polyethylene terephthalate. Colloids Surf B Biointerfaces 2021; 201:111601. [PMID: 33618083 DOI: 10.1016/j.colsurfb.2021.111601] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/26/2021] [Accepted: 01/28/2021] [Indexed: 11/18/2022]
Abstract
Poly (amidoamine) (PAMAM) with 3rd and 5th generation was covalently grafted as the contact active biocidal agent on the surface of polyethylene terephthalate (PET) with the help of UV induced carbene chemistry (PAMAM-g-PET). The graft density and the surface roughness were controlled by turning UV irradiation time and the PAMAM generation. The PAMAM graft monolayer was characterized via the contact angle, XPS, nanoIR, SEM and AFM. The antibacterial ability of PAMAM-g-PET was evaluated ex-vivo with the help of laser scanning confocal microscope (CLSM), and the results indicated that the decorated PET was able to kill both S. aureus and E. coli in the aqueous environment. Increasing the surface graft concentration and using the dendrimer with higher generation enhanced the lethality towards the bacterial. The decorated film was still able to kill the contact bacterial strain when the cationic primary amine groups were shielded by acetyl chloride, however, the bacterial in the suspension was hardly affected in this case. The un-selectivity and instantaneity of carbene chemistry endowed this grafting strategy the potential to be extended to other organic substances.
Collapse
Affiliation(s)
- Haobo Zhang
- School of Material Science and Engineering, Beijing University of Chemistry Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
| | - Weihan Wang
- School of Material Science and Engineering, Beijing University of Chemistry Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
| | - Lilong Wei
- China-Japan Friendship Hospital, Yinghuayuan North Street 2, Chaoyang District, Beijing, 100029, China.
| | - Dezhen Wu
- School of Material Science and Engineering, Beijing University of Chemistry Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
| | - Jue Cheng
- School of Material Science and Engineering, Beijing University of Chemistry Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
| | - Feng Gao
- School of Material Science and Engineering, Beijing University of Chemistry Technology, North Third Ring Road 15, Chaoyang District, Beijing, 100029, China.
| |
Collapse
|
24
|
Viswanath V, Santhakumar K. Synthesis, characterization and biological activity of cefazolin sodium dendrimer complexes. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.10.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Wang S, Jagadesan P, Sun H, Hu R, Li Z, Huang Y, Liu L, Wang S, Younus M, Schanze KS. Fluorescence Imaging of Mammalian Cells with Cationic Conjugated Polyelectrolytes. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000192] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shanshan Wang
- Department of Chemistry University of Florida Gainesville Florida 32611-7200 USA
| | - Pradeepkumar Jagadesan
- Department of Chemistry University of Texas at San Antonio One UTSA San Antonio TX, 78249 USA
| | - Han Sun
- Department of Chemistry University of Texas at San Antonio One UTSA San Antonio TX, 78249 USA
| | - Rong Hu
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Zhiliang Li
- Department of Chemistry University of Florida Gainesville Florida 32611-7200 USA
| | - Yun Huang
- Department of Chemistry University of Florida Gainesville Florida 32611-7200 USA
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Muhammad Younus
- Department of Chemistry University of Texas at San Antonio One UTSA San Antonio TX, 78249 USA
| | - Kirk S. Schanze
- Department of Chemistry University of Florida Gainesville Florida 32611-7200 USA
- Department of Chemistry University of Texas at San Antonio One UTSA San Antonio TX, 78249 USA
| |
Collapse
|
26
|
Lam AK, Moen EL, Pusavat J, Wouters CL, Panlilio H, Ferrell MJ, Houck MB, Glatzhofer DT, Rice CV. PEGylation of Polyethylenimine Lowers Acute Toxicity while Retaining Anti-Biofilm and β-Lactam Potentiation Properties against Antibiotic-Resistant Pathogens. ACS OMEGA 2020; 5:26262-26270. [PMID: 33073153 PMCID: PMC7557992 DOI: 10.1021/acsomega.0c04111] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 09/15/2020] [Indexed: 05/29/2023]
Abstract
Bacterial biofilms, often impenetrable to antibiotic medications, are a leading cause of poor wound healing. The prognosis is worse for wounds with biofilms of antimicrobial-resistant (AMR) bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA), methicillin-resistant S. epidermidis (MRSE), and multi-drug resistant Pseudomonas aeruginosa (MDR-PA). Resistance hinders initial treatment of standard-of-care antibiotics. The persistence of MRSA, MRSE, and/or MDR-PA often allows acute infections to become chronic wound infections. The water-soluble hydrophilic properties of low-molecular-weight (600 Da) branched polyethylenimine (600 Da BPEI) enable easy drug delivery to directly attack AMR and biofilms in the wound environment as a topical agent for wound treatment. To mitigate toxicity issues, we have modified 600 Da BPEI with polyethylene glycol (PEG) in a straightforward one-step reaction. The PEG-BPEI molecules disable β-lactam resistance in MRSA, MRSE, and MDR-PA while also having the ability to dissolve established biofilms. PEG-BPEI accomplishes these tasks independently, resulting in a multifunction potentiation agent. We envision wound treatment with antibiotics given topically, orally, or intravenously in which external application of PEG-BPEIs disables biofilms and resistance mechanisms. In the absence of a robust pipeline of new drugs, existing drugs and regimens must be re-evaluated as combination(s) with potentiators. The PEGylation of 600 Da BPEI provides new opportunities to meet this goal with a single compound whose multifunction properties are retained while lowering acute toxicity.
Collapse
|
27
|
Chis AA, Dobrea C, Morgovan C, Arseniu AM, Rus LL, Butuca A, Juncan AM, Totan M, Vonica-Tincu AL, Cormos G, Muntean AC, Muresan ML, Gligor FG, Frum A. Applications and Limitations of Dendrimers in Biomedicine. Molecules 2020; 25:E3982. [PMID: 32882920 PMCID: PMC7504821 DOI: 10.3390/molecules25173982] [Citation(s) in RCA: 139] [Impact Index Per Article: 34.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 08/26/2020] [Accepted: 08/31/2020] [Indexed: 12/11/2022] Open
Abstract
Biomedicine represents one of the main study areas for dendrimers, which have proven to be valuable both in diagnostics and therapy, due to their capacity for improving solubility, absorption, bioavailability and targeted distribution. Molecular cytotoxicity constitutes a limiting characteristic, especially for cationic and higher-generation dendrimers. Antineoplastic research of dendrimers has been widely developed, and several types of poly(amidoamine) and poly(propylene imine) dendrimer complexes with doxorubicin, paclitaxel, imatinib, sunitinib, cisplatin, melphalan and methotrexate have shown an improvement in comparison with the drug molecule alone. The anti-inflammatory therapy focused on dendrimer complexes of ibuprofen, indomethacin, piroxicam, ketoprofen and diflunisal. In the context of the development of antibiotic-resistant bacterial strains, dendrimer complexes of fluoroquinolones, macrolides, beta-lactamines and aminoglycosides have shown promising effects. Regarding antiviral therapy, studies have been performed to develop dendrimer conjugates with tenofovir, maraviroc, zidovudine, oseltamivir and acyclovir, among others. Furthermore, cardiovascular therapy has strongly addressed dendrimers. Employed in imaging diagnostics, dendrimers reduce the dosage required to obtain images, thus improving the efficiency of radioisotopes. Dendrimers are macromolecular structures with multiple advantages that can suffer modifications depending on the chemical nature of the drug that has to be transported. The results obtained so far encourage the pursuit of new studies.
Collapse
Affiliation(s)
| | - Carmen Dobrea
- Preclinical Department, Faculty of Medicine, “Lucian Blaga” University of Sibiu, 2A Lucian Blaga St., 550169 Sibiu, Romania; (A.A.C.); (A.M.A.); (L.L.R.); (A.B.); (A.M.J.); (M.T.); (A.L.V.-T.); (G.C.); (A.C.M.); (M.L.M.); (F.G.G.); (A.F.)
| | - Claudiu Morgovan
- Preclinical Department, Faculty of Medicine, “Lucian Blaga” University of Sibiu, 2A Lucian Blaga St., 550169 Sibiu, Romania; (A.A.C.); (A.M.A.); (L.L.R.); (A.B.); (A.M.J.); (M.T.); (A.L.V.-T.); (G.C.); (A.C.M.); (M.L.M.); (F.G.G.); (A.F.)
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Staneva D, Vasileva-Tonkova E, Yordanova S, Kukeva R, Stoyanova R, Grabchev I. Spectral characterization, antimicrobial and antibiofilm activity of poly(propylene imine) metallodendrimers in solution and applied onto cotton fabric. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2020. [DOI: 10.1080/1023666x.2020.1796105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Evgenia Vasileva-Tonkova
- Department of Microbiology, The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Stanislava Yordanova
- Faculty of Chemistry and Pharmacy, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| | - Rositsa Kukeva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Radostina Stoyanova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Ivo Grabchev
- Faculty of Medicine, Sofia University “St. Kliment Ohridski”, Sofia, Bulgaria
| |
Collapse
|
29
|
Saedi S, Rhim JW. Synthesis of Fe3O4@SiO2@PAMAM dendrimer@AgNP hybrid nanoparticles for the preparation of carrageenan-based functional nanocomposite film. Food Packag Shelf Life 2020. [DOI: 10.1016/j.fpsl.2020.100473] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
30
|
Kawano Y, Jordan O, Hanawa T, Borchard G, Patrulea V. Are Antimicrobial Peptide Dendrimers an Escape from ESKAPE? Adv Wound Care (New Rochelle) 2020; 9:378-395. [PMID: 32320368 PMCID: PMC7307686 DOI: 10.1089/wound.2019.1113] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 03/18/2020] [Indexed: 12/16/2022] Open
Abstract
Significance: The crisis of antimicrobial resistance (AMR) increases dramatically despite all efforts to use available antibiotics or last resort antimicrobial agents. The spread of the AMR, declared as one of the most important health-related issues, warrants the development of new antimicrobial strategies. Recent Advances: Antimicrobial peptides (AMPs) and AMP dendrimers (AMPDs), as well as polymer dendrimers are relatively new and promising strategies with the potential to overcome drug resistance issues arising in ESKAPE pathogens (Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter species) colonizing chronic wounds. Critical Issues: AMPs-AMPDs suffer from limited efficacy, short-lasting bioactivity, and concerns of toxicity. To circumvent these drawbacks, their covalent coupling to biopolymers and/or encapsulation into different drug carrier systems is investigated, with a special focus on topical applications. Future Directions: Scientists and the pharmaceutical industry should focus on this challenging subject to either improve the activity of existing antimicrobial agents or find new drug candidates. The focus should be put on the discovery of new drugs or the combination of existing drugs for a better synergy, taking into account all kinds of wounds and existing pathogens, and more specifically on the development of next-generation antimicrobial peptides, encompassing the delivery carrier toward improved pharmacokinetics and efficacy.
Collapse
Affiliation(s)
- Yayoi Kawano
- Laboratory of Preformulation Study, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Olivier Jordan
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Takehisa Hanawa
- Laboratory of Preformulation Study, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Chiba, Japan
| | - Gerrit Borchard
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| | - Viorica Patrulea
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, Geneva, Switzerland
| |
Collapse
|
31
|
Chen A, Karanastasis A, Casey KR, Necelis M, Carone BR, Caputo GA, Palermo EF. Cationic Molecular Umbrellas as Antibacterial Agents with Remarkable Cell-Type Selectivity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:21270-21282. [PMID: 31917544 DOI: 10.1021/acsami.9b19076] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We synthesized a combinatorial library of dendrons that display a cluster of cationic charges juxtaposed with a hydrophobic alkyl chain, using the so-called "molecular umbrella" design approach. Systematically tuning the generation number and alkyl chain length enabled a detailed study of the structure-activity relationships in terms of both hydrophobic content and number of cationic charges. These discrete, unimolecular compounds display rapid and broad-spectrum bactericidal activity comparable to the activity of antibacterial peptides. Micellization was examined by pyrene emission and dynamic light scattering, which revealed that monomeric, individually solvated dendrons are present in aqueous media. The antibacterial mechanism of action is putatively driven by the membrane-disrupting nature of these cationic surfactants, which we confirmed by enzymatic assays on E. coli cells. The hemolytic activity of these dendritic macromolecules is sensitively dependent on the dendron generation and the alkyl chain length. Via structural optimization of these two key design features, we identified a leading candidate with potent broad-spectrum antibacterial activity (4-8 μg/mL) combined with outstanding hemocompatibility (up to 5000 μg/mL). This selected compound is >1000-fold more active against bacteria as compared to red blood cells, which represents one of the highest selectivity index values ever reported for a membrane-disrupting antibacterial agent. Thus, the leading candidate from this initial library screen holds great potential for future applications as a nontoxic, degradable disinfectant.
Collapse
Affiliation(s)
- Ao Chen
- Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12054, United States
| | - Apostolos Karanastasis
- Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12054, United States
| | | | | | | | | | - Edmund F Palermo
- Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12054, United States
| |
Collapse
|
32
|
Liu X, Wang Z, Feng X, Bai E, Xiong Y, Zhu X, Shen B, Duan Y, Huang Y. Platensimycin-Encapsulated Poly(lactic-co-glycolic acid) and Poly(amidoamine) Dendrimers Nanoparticles with Enhanced Anti-Staphylococcal Activity in Vivo. Bioconjug Chem 2020; 31:1425-1437. [DOI: 10.1021/acs.bioconjchem.0c00121] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xingyun Liu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Zhe Wang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Xueqiong Feng
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Enhe Bai
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Yi Xiong
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
| | - Xiangcheng Zhu
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan 410011, China
| | | | - Yanwen Duan
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
- Hunan Engineering Research Center of Combinatorial Biosynthesis and Natural Product Drug Discover, Changsha, Hunan 410011, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan, 410011, China
| | - Yong Huang
- Xiangya International Academy of Translational Medicine, Central South University, Changsha, Hunan 410013, China
- National Engineering Research Center of Combinatorial Biosynthesis for Drug Discovery, Changsha, Hunan, 410011, China
| |
Collapse
|
33
|
Basheer BV, George JJ, Siengchin S, Parameswaranpillai J. Polymer grafted carbon nanotubes—Synthesis, properties, and applications: A review. ACTA ACUST UNITED AC 2020. [DOI: 10.1016/j.nanoso.2020.100429] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
34
|
Quantitative and Selective Surface Plasmon Resonance Response Based on a Reduced Graphene Oxide-Polyamidoamine Nanocomposite for Detection of Dengue Virus E-Proteins. NANOMATERIALS 2020; 10:nano10030569. [PMID: 32245185 PMCID: PMC7153703 DOI: 10.3390/nano10030569] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/31/2020] [Accepted: 02/11/2020] [Indexed: 12/12/2022]
Abstract
Dengue viral infection is one of the most common deadliest diseases and has become a recurrent issue for public health in tropical countries. Although the spectrum of clinical diagnosis and treatment have recently been established, the efficient and rapid detection of dengue virus (DENV) during viremia and the early febrile phase is still a great challenge. In this study, a dithiobis (succinimidyl undecanoate, DSU)/amine-functionalized reduced graphene oxide--polyamidoamine dendrimer (DSU/amine-functionalized rGO-PAMAM) thin film-based surface plasmon resonance (SPR) sensor was developed for the detection of DENV 2 E-proteins. Different concentrations of DENV 2 E-proteins were successfully tested by the developed SPR sensor-based system. The performance of the developed sensor showed increased shift in the SPR angle, narrow full-width-half-maximum of the SPR curve, high detection accuracy, excellent figure of merit and signal-to-noise ratio, good sensitivity values in the range of 0.08-0.5 pM (S = 0.2576°/pM, R2 = 0.92), and a high equilibrium association constant (KA) of 7.6452 TM-1. The developed sensor also showed a sensitive and selective response towards DENV 2 E-proteins compared to DENV 1 E-proteins and ZIKV (Zika virus) E-proteins. Overall, it was concluded that the Au/DSU/amine-functionalized rGO-PAMAM thin film-based SPR sensor has potential to serve as a rapid clinical diagnostic tool for DENV infection.
Collapse
|
35
|
Svenningsen SW, Frederiksen RF, Counil C, Ficker M, Leisner JJ, Christensen JB. Synthesis and Antimicrobial Properties of a Ciprofloxacin and PAMAM-dendrimer Conjugate. Molecules 2020; 25:molecules25061389. [PMID: 32197523 PMCID: PMC7146445 DOI: 10.3390/molecules25061389] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/13/2020] [Accepted: 03/17/2020] [Indexed: 02/01/2023] Open
Abstract
Infections caused by bacteria resistant to antibiotics are an increasing problem. Multivalent antibiotics could be a solution. In the present study, a covalent conjugate between Ciprofloxacin and a G0-PAMAM dendrimer has been synthesized and tested against clinically relevant Gram-positive and Gram-negative bacteria. The conjugate has antimicrobial activity and there is a positive dendritic effect compared to Ciprofloxacin itself.
Collapse
Affiliation(s)
- Søren Wedel Svenningsen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (S.W.S.); (C.C.); (M.F.)
| | - Rikki Franklin Frederiksen
- Department of Veterinary and Animal Sciences, Food Safety and Zoonoses, University of Copenhagen, Grønnegårdsvej 15, DK-1870 Frederiksberg C, Denmark; (R.F.F.); (J.J.L.)
| | - Claire Counil
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (S.W.S.); (C.C.); (M.F.)
| | - Mario Ficker
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (S.W.S.); (C.C.); (M.F.)
| | - Jørgen J. Leisner
- Department of Veterinary and Animal Sciences, Food Safety and Zoonoses, University of Copenhagen, Grønnegårdsvej 15, DK-1870 Frederiksberg C, Denmark; (R.F.F.); (J.J.L.)
| | - Jørn Bolstad Christensen
- Department of Chemistry, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark; (S.W.S.); (C.C.); (M.F.)
- Correspondence: ; Tel.: +45-3533-2452
| |
Collapse
|
36
|
Wang J, Li B, Pu X, Wang X, Cooper RC, Gui Q, Yang H. Injectable Multicomponent Biomimetic Gel Composed of Inter-Crosslinked Dendrimeric and Mesoporous Silica Nanoparticles Exhibits Highly Tunable Elasticity and Dual Drug Release Capacity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:10202-10210. [PMID: 32023033 PMCID: PMC10983814 DOI: 10.1021/acsami.0c01395] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
There is a growing need for cartilage defect grafts that are structurally adaptable to possess multifaceted functions to promote bone regeneration, sustain medication efficacy, and preferably remain injectable but solidify quickly upon injection. In this work, we developed an injectable multicomponent biomimetic gel (MBG) by integrating polyamidoamine dendrimer G3 (G3), mesoporous silica nanoparticles (MSNs), and dendrimer-templated silver nanoparticles (G3-Ag) into a well-defined cross-linked network. MBGs composed of one particulate component (G3 alone), i.e., MBG-1, two particulate components (G3 and MSN-NH2), i.e., MBG-2, and three particulate components (G3, MSN-NH2, and G3-Ag), i.e., MBG-3, were prepared by inter-cross-linking dendrimeric and mesoporous silica nanoparticles with poly(ethylene glycol) diglycidyl ether (PEG-DGE, Mn = 2000 g/mol) via the facile amine-epoxy click reaction. The water-soluble antibiotic isoniazid was loaded to the cross-linked PEG network, whereas the hydrophobic antibiotic rifampicin was encapsulated into mesoporous MSNs. Our studies revealed that elasticity and mechanical strengths could be modulated and enhanced significantly with the inclusion of MSNs and silver nanoparticles. Isoniazid was released rapidly while rifampicin was released over an extended period of time. In addition, MBGs showed injectability, high swelling capacity, structural stability, and cytocompatibility. Taken together, MBGs have shown structural features that allow for the development of injectable gel grafts with the ability to promote cartilage defect repair and offer antibiotic medication benefits.
Collapse
Affiliation(s)
- Juan Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Boxuan Li
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin 300192, China
| | - Ximing Pu
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Xingming Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Remy C Cooper
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23284, United States
| | - Qin Gui
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
| | - Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, Virginia 23219, United States
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, Virginia 23298, United States
- Massey Cancer Center, Virginia Commonwealth University, Richmond, Virginia 23298, United States
| |
Collapse
|
37
|
Fox LJ, Matthews L, Stockdale H, Pichai S, Snow T, Richardson RM, Briscoe WH. Structural changes in lipid mesophases due to intercalation of dendritic polymer nanoparticles: Swollen lamellae, suppressed curvature, and augmented structural disorder. Acta Biomater 2020; 104:198-209. [PMID: 31904557 DOI: 10.1016/j.actbio.2019.12.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/21/2019] [Accepted: 12/30/2019] [Indexed: 12/19/2022]
Abstract
Understanding interactions between nanoparticles and model membranes is relevant to functional nano-composites and the fundamentals of nanotoxicity. In this study, the effect of polyamidoamine (PAMAM) dendrimers as model nanoparticles (NP) on the mesophase behaviour of 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphoethanolamine (POPE) has been investigated using high-pressure small-angle X-ray scattering (HP-SAXS). The pressure-temperature (p-T) diagrams for POPE mesophases in excess water were obtained in the absence and presence of G2 and G4 polyamidoamine (PAMAM) dendrimers (29 Å and 45 Å in diameter, respectively) at varying NP-lipid number ratio (ν = 0.0002-0.02) over the pressure range p = 1-3000 bar and temperature range T = 20-80 °C. The p-T phase diagram of POPE exhibited the Lβ, Lα and HII phases. Complete analysis of the phase diagrams, including the relative area pervaded by different phases, phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), the pressure-dependence of d-spacing (Δd/Δp), and the structural ordering in the mesophase as gauged by the Scherrer coherence length (L) permitted insights into the size- and concentration-dependent interactions between the dendrimers and the model membrane system. The addition of dendrimers changed the phase transition pressure and temperature and resulted in the emergence of highly swollen lamellar phases, dubbed Lβ-den and Lα-den. G4 PAMAM dendrimers at the highest concentration ν = 0.02 suppressed the formation of the HII phase within the temperature range studied, whereas the addition of G2 PAMAM dendrimers at the same concentration promoted an extended mixed lamellar region in which Lα and Lβ phases coexisted. STATEMENT OF SIGNIFICANCE: Using high pressure small angle X-ray scattering in the pressure range 1-3000 bar and temperature range 20-60 °C, we have studied interactions between PAMAM dendrimers (as model nanoparticles) and POPE lipid mesophases (as model membranes). We report the pressure-temperature phase diagrams for the dendrimer-lipid mesophases for the first time. We find that the dendrimers alter the phase transition temperatures (Tt) and pressures (pt), the lattice parameters (d-spacing), and the structural order in the mesophase. We interpret these unprecedented results in terms of the fluidity of the lipid membranes and the interactions between the dendrimers and the membranes. Our findings are of fundamental relevance to the field of nanotoxicity and functional nanomaterials that integrate nanoparticles and organized lipid structures.
Collapse
|
38
|
Omar NAS, Fen YW, Abdullah J, Mustapha Kamil Y, Daniyal WMEMM, Sadrolhosseini AR, Mahdi MA. Sensitive Detection of Dengue Virus Type 2 E-Proteins Signals Using Self-Assembled Monolayers/Reduced Graphene Oxide-PAMAM Dendrimer Thin Film-SPR Optical Sensor. Sci Rep 2020; 10:2374. [PMID: 32047209 PMCID: PMC7012912 DOI: 10.1038/s41598-020-59388-3] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/08/2020] [Indexed: 02/03/2023] Open
Abstract
In this work, sensitive detection of dengue virus type 2 E-proteins (DENV-2 E-proteins) was performed in the range of 0.08 pM to 0.5 pM. The successful DENV detection at very low concentration is a matter of concern for targeting the early detection after the onset of dengue symptoms. Here, we developed a SPR sensor based on self-assembled monolayer/reduced graphene oxide-polyamidoamine dendrimer (SAM/NH2rGO/PAMAM) thin film to detect DENV-2 E-proteins. Surface characterizations involving X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) confirms the incorporation of NH2rGO-PAMAM nanoparticles in the prepared sensor films. The specificity, sensitivity, binding affinity, and selectivity of the SPR sensor were then evaluated. Results indicated that the variation of the sensing layer due to different spin speed, time incubation, and concentration provided a better interaction between the analyte and sensing layer. The linear dependence of the SPR sensor showed good linearity (R2 = 0.92) with the lowest detection of 0.08 pM DENV-2 E-proteins. By using the Langmuir model, the equilibrium association constant was obtained at very high value of 6.6844 TM−1 (R2 = 0.99). High selectivity of the SPR sensor towards DENV-2 E-proteins was achieved in the presence of other competitors.
Collapse
Affiliation(s)
- Nur Alia Sheh Omar
- Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Yap Wing Fen
- Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia. .,Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - Jaafar Abdullah
- Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Yasmin Mustapha Kamil
- inLAZER Dynamics Sdn Bhd, InnoHub Unit, Putra Science Park, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | | | - Amir Reza Sadrolhosseini
- Institute of Advanced Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - Mohd Adzir Mahdi
- Wireless and Photonics Network Research Centre, Faculty of Engineering, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| |
Collapse
|
39
|
Interactions between PAMAM dendrimers and DOPC lipid multilayers: Membrane thinning and structural disorder. Biochim Biophys Acta Gen Subj 2020; 1865:129542. [PMID: 31987955 DOI: 10.1016/j.bbagen.2020.129542] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Revised: 01/18/2020] [Accepted: 01/22/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Understanding the structure of hybrid nanoparticle-lipid multilayers is of fundamental importance to their bioanalytical applications and nanotoxicity, where nanoparticle-membrane interactions play an important role. Poly(amidoamine) (PAMAM) dendrimers are branched polymeric nanoparticles with potential biomedical applications due to precise tunability of their physicochemical properties. Here, the effect of PAMAM dendrimers (2.9-4.5 nm) with either a hydrophilic amine (NH2) or a hydrophobic C12 chain surface termination on the 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC) multilayers has been studied for the first time. METHODS DOPC multilayers were created by the liposome-rupture method via drop-casting dendrimer-liposome dispersions with the dendrimers added at different concentrations and at three different stages. The multilayer structure was evaluated via the analysis of the synchrotron X-ray reflectivity (XRR) curves, obtaining the bilayer d-spacing, the coherence length from the Scherrer (Ls) analysis of the Bragg peaks, and the paracrystalline disorder parameter (g). RESULTS Dendrimer addition led to lipid bilayer thinning and more disordered multilayer structures. Larger hydrophobic dendrimers caused greater structural disruption to the multilayers compared to the smaller dendrimers. The smallest, positively charged dendrimers at their highest concentration caused the most pronounced bilayer thinning. The dendrimer-liposome mixing method also affected the multilayer structure due to different dendrimer aggregation involved. CONCLUSIONS These results show the complexity of the effect of dendrimer physicochemical properties and the addition method of dendrimers on the structure of mixed dendrimer-DOPC multilayers. GENERAL SIGNIFICANCE These insights are useful for fundamental understanding of nanotoxicity and future biomedical application of nanocomposite multilayer materials in which nanoparticles are added for enhanced properties and functionality.
Collapse
|
40
|
Zhu H, Mei X, He Y, Mao H, Tang W, Liu R, Yang J, Luo K, Gu Z, Zhou L. Fast and High Strength Soft Tissue Bioadhesives Based on a Peptide Dendrimer with Antimicrobial Properties and Hemostatic Ability. ACS APPLIED MATERIALS & INTERFACES 2019; 12:4241-4253. [PMID: 31859475 DOI: 10.1021/acsami.9b18720] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Haofang Zhu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Xingheng Mei
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Yiyan He
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Hongli Mao
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| | - Wenbo Tang
- The Second Department of Hepato-Pancreato-Biliary Surgery, Chinese People’s Liberation Army (PLA) General Hospital, Beijing 100853, P.R. China
| | - Rong Liu
- The Second Department of Hepato-Pancreato-Biliary Surgery, Chinese People’s Liberation Army (PLA) General Hospital, Beijing 100853, P.R. China
| | - Jun Yang
- The Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Science, Nankai University, Tianjin 300071, P.R. China
| | - Kui Luo
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and molecular imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Zhongwei Gu
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
- Huaxi MR Research Center (HMRRC), Department of Radiology, Functional and molecular imaging Key Laboratory of Sichuan Province, West China Hospital, Sichuan University, Chengdu 610041, P.R. China
| | - Lian Zhou
- College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
| |
Collapse
|
41
|
Shetgaonkar AD, Nadkarni VS. Synthetically Induced 1→4‐C Branching Motif ‐ An Access Towards Dense Urethane Connecting Dendritic Scaffolds and Application in Nuclear Track Detection. ChemistrySelect 2019. [DOI: 10.1002/slct.201903243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Vishnu S. Nadkarni
- School of Chemical SciencesGoa University, Taleigao Plateau Goa- 403206 India
| |
Collapse
|
42
|
Valikala V, Santhakumar I, Kannappan S. Synthesis and effect of pegylation on citric acid dendritic nano architectures anchored with cefotaxime sodium. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 201:111683. [PMID: 31710928 DOI: 10.1016/j.jphotobiol.2019.111683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 10/27/2019] [Accepted: 11/01/2019] [Indexed: 11/29/2022]
Abstract
In recent years dendrimers have fascinated the investigators towards targeted drug delivery because of their versatile framework and exhibit immense potentiality in entrapping drug moieties through host-guest interactions and serve as a promising vector in biological applications. The current investigation is focused on developing pegylated citric acid cefotaxime dendrimers through the divergent method and its characterization through spectroscopic, microscopic, thermal and microscopic techniques. Among the spectroscopic techniques, 1H NMR and 13C NMR elucidated the key functional groups at various chemical shifts while ESI-MS pointed out the molecular weight of cefotaxime sodium in various generations. Similarly, FTIR, DSC, and AFM investigations detailed that the generations are devoid of incompatibilities, structural deformities and can be opted for targeted drug delivery. The drug entrapment studies and in-vitro drug release studies highlight CFTX G5 containing 92.4% entrapment efficacy and 83.8% drug release in 48 h and specifies a sustain release characteristics. In connection to the above, the in-vivo studies reveal a potent antibacterial activity against various gram-positive and gram-negative microorganisms with a decreased hemolysis and cytotoxicity effects and reflect a high margin of safety regarding pegylated CFTX dendrimers. Further, the antibacterial activities are supported through confocal microscopy that clarified the cellular uptake of dendritic molecules and their internalization.
Collapse
Affiliation(s)
- Viswanath Valikala
- School of Advanced Sciences, Vellore Institute of Technology, Tamil Nadu, India
| | - Induja Santhakumar
- Lee Kong Chian School of Medicine, Nanyang Technological University, 59 Nanyang Drive, Singapore 636921, Singapore
| | - Santhakumar Kannappan
- School of Advanced Sciences, Vellore Institute of Technology, Tamil Nadu, India; Carbon dioxide Research and Green Technology Centre, Vellore Institute of Technology, Tamilnadu, India.
| |
Collapse
|
43
|
Synergistic Effects of Anionic/Cationic Dendrimers and Levofloxacin on Antibacterial Activities. Molecules 2019; 24:molecules24162894. [PMID: 31395831 PMCID: PMC6719981 DOI: 10.3390/molecules24162894] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 08/02/2019] [Accepted: 08/06/2019] [Indexed: 11/17/2022] Open
Abstract
Despite the numerous studies on dendrimers for biomedical applications, the antibacterial activity of anionic phosphorus dendrimers has not been explored. In our research, we evaluated the antibacterial activity of modified polycationic and polyanionic dendrimers in combination with levofloxacin (LVFX) against Gram-negative (Escherichia coli ATCC 25922, Proteus hauseri ATCC 15442) and Gram-positive (Staphylococcus aureus ATCC 6538) bacteria. In the case of Gram-negative bacteria, we concluded that a combination of dendrimers and antibiotic gave satisfactory results due to a synergistic effect. The use of fluoroquinolone antibiotics, such as LVFX, not only caused resistance in disease-causing microorganisms but also increased environmental pollution. Therefore, reduction of drug dosage is of general interest.
Collapse
|
44
|
Antimicrobial efficacy and mechanism of action of poly(amidoamine) (PAMAM) dendrimers against opportunistic pathogens. Int J Antimicrob Agents 2019; 53:500-507. [DOI: 10.1016/j.ijantimicag.2018.12.012] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 12/20/2018] [Accepted: 12/22/2018] [Indexed: 11/23/2022]
|
45
|
Akhtar S, Chandrasekhar B, Yousif MH, Renno W, Benter IF, El-Hashim AZ. Chronic administration of nano-sized PAMAM dendrimers in vivo inhibits EGFR-ERK1/2-ROCK signaling pathway and attenuates diabetes-induced vascular remodeling and dysfunction. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2019; 18:78-89. [PMID: 30844576 DOI: 10.1016/j.nano.2019.02.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 02/11/2019] [Accepted: 02/14/2019] [Indexed: 12/13/2022]
Abstract
We investigated whether chronic administration of nano-sized polyamidoamine (PAMAM) dendrimers can have beneficial effects on diabetes-induced vascular dysfunction by inhibiting the epidermal growth factor receptor (EGFR)-ERK1/2-Rho kinase (ROCK)-a pathway known to be critical in the development of diabetic vascular complications. Daily administration of naked PAMAMs for up to 4 weeks to streptozotocin-induced diabetic male Wistar rats inhibited EGFR-ERK1/2-ROCK signaling and improved diabetes-induced vascular remodeling and dysfunction in a dose, generation (G6 > G5) and surface chemistry-dependent manner (cationic > anionic > neutral). PAMAMs, AG1478 (a selective EGFR inhibitor), or anti-EGFR siRNA also inhibited vascular EGFR-ERK1/2-ROCK signaling in vitro. These data showed that naked PAMAM dendrimers have the propensity to modulate key (e.g. EGFR) cell signaling cascades with associated pharmacological consequences in vivo that are dependent on their physicochemical properties. Thus, PAMAMs, alone or in combination with vasculoprotective agents, may have a beneficial role in the potential treatment of diabetes-induced vascular complications.
Collapse
Affiliation(s)
- Saghir Akhtar
- College of Medicine, Qatar University, P.O. Box 2713, Doha, Qatar.
| | | | - Mariam Hm Yousif
- Department of Pharmacology and Toxicology, Kuwait University, Safat, Kuwait
| | - Waleed Renno
- Department of Pathology, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Ibrahim F Benter
- Faculty of Medicine, Eastern Mediterranean University, Famagusta, North Cyprus
| | - Ahmed Z El-Hashim
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Kuwait University.
| |
Collapse
|
46
|
Synthesis and evaluation of the antibacterial effect of silica-coated modified magnetic poly-(amidoamine) G5 nanoparticles on E. coli and S. aureus. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.11.101] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
47
|
Arévalo LM, Yarce CJ, Oñate-Garzón J, Salamanca CH. Decrease of Antimicrobial Resistance through Polyelectrolyte-Coated Nanoliposomes Loaded with β-Lactam Drug. Pharmaceuticals (Basel) 2018; 12:E1. [PMID: 30583595 PMCID: PMC6469175 DOI: 10.3390/ph12010001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/12/2018] [Accepted: 12/19/2018] [Indexed: 12/04/2022] Open
Abstract
Currently, one of the greatest health challenges worldwide is the resistance to antibiotic drugs, which has led to the pursuit of new alternatives for the recovery of biological activity, where the use of different types of nano-systems has shown an interesting potential. In this study, we evaluated the antibiotic activity of a model drug (ampicillin) encapsulated within coated-nanoliposomes on strains of Staphylococcus aureus with different antibiotic-resistance degrees. Hence, liposomes were elaborated by the ethanol injection method and were coated with a cationic polymer (Eudragit E-100) through the layer-by-layer process. Liposome characterization, such as size, polydispersity, zeta potential, and encapsulation efficiency were determined using dynamic light scattering and ultrafiltration/centrifugation techniques. Although biological activity was evaluated using three ATCC strains of S. aureus corresponding to ATCC 25923 (sensitive), ATCC 29213 (resistant) and ATCC 43300 (very resistant). The results showed changes in size (from ~150 to 220 nm), polydispersity (from 0.20 to 0.45) and zeta potential (from -37 to +45 mV) for the coating process. In contrast, encapsulation efficiency of approximately 70% and an increase in antibiotic activity of 4 and 18 times more on those S. aureus-resistant strains have been observed.
Collapse
Affiliation(s)
- Lina M Arévalo
- Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122⁻135, Cali 760031, Colombia.
| | - Cristhian J Yarce
- Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122⁻135, Cali 760031, Colombia.
| | - José Oñate-Garzón
- Grupo de investigación en Química y Biotecnología (QUIBIO), Facultad de Ciencias Básicas, Universidad Santiago de Cali, Cali 760031, Colombia.
| | - Constain H Salamanca
- Maestría en Formulación de Productos Químicos y Derivados, Facultad de Ciencias Naturales, Universidad Icesi, Calle 18 No. 122⁻135, Cali 760031, Colombia.
| |
Collapse
|
48
|
Abstract
A series of secondary amine-modified cyclodextrin (CD) derivatives was synthesized with diverse exterior terminal groups (i.e., hydroxyl, methyl, methoxyl, and primary amine). Subsequent reaction with nitric oxide (NO) gas under alkaline conditions yielded N-diazeniumdiolate-modified CD derivatives. Adjustable NO payloads (0.6-2.4 μmol/mg) and release half-lives (0.7-4.2 h) were achieved by regulating both the amount of secondary amine precursors and the functional groups around the NO donors. The bactericidal action of these NO-releasing cyclodextrin derivatives was evaluated against Pseudomonas aeruginosa, a Gram-negative pathogen, with antibacterial activity proving dependent on both the NO payload and exterior modification. Materials containing a high density of NO donors or primary amines exhibited the greatest ability to eradicate P. aeruginosa. Of the materials prepared, only the primary amine-terminated heptasubstituted CD derivatives exhibited toxicity against mammalian L929 mouse fibroblast cells. The NO donor-modified CD was also capable of delivering promethazine, a hydrophobic drug, thus demonstrating potential as a dual-drug-releasing therapeutic.
Collapse
Affiliation(s)
- Haibao Jin
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Lei Yang
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mona Jasmine R. Ahonen
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Mark H. Schoenfisch
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| |
Collapse
|
49
|
Sowińska M, Laskowska A, Guśpiel A, Solecka J, Bochynska-Czyż M, Lipkowski AW, Trzeciak K, Urbanczyk-Lipkowska Z. Bioinspired Amphiphilic Peptide Dendrimers as Specific and Effective Compounds against Drug Resistant Clinical Isolates of E. coli. Bioconjug Chem 2018; 29:3571-3585. [PMID: 30235928 DOI: 10.1021/acs.bioconjchem.8b00544] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Evolution-derived natural compounds have been inspirational for design of numerous pharmaceuticals, e.g., penicillins and tetracyclines. Herein, we present a bioinspired strategy to design peptide dendrimers for the effective therapy of E. coli infections where the selection of appropriate amino acids and the mode of their assembly are based on the information gained from research on membranolytic natural antimicrobial peptides (AMP's). On the molecular level two opposite effects were explored: the effect of multiple positive charges necessary for membrane disintegration was equilibrated by the anchoring role of tryptophanes. Indeed, a series of Trp-terminated dendrimers exhibited high potency against clinical isolates of antibiotic resistant ESBL E. coli strains, stability in human plasma along with very low hemo- and genotoxicity. Investigation of the underlying antimicrobial mechanism indicated that the dendrimers studied at minimal inhibitory concentration showed weak permeability toward membranes. Solid-state 2D NMR studies revealed their presence on and inside the model membranes. Therefore, their biological properties might be explained by targeting of extra- or intracellular receptors. Our results point to a new approach to design novel branched antimicrobials with high therapeutic index.
Collapse
Affiliation(s)
- Marta Sowińska
- Institute of Organic Chemistry PAS , Kasprzaka Str. 44/54 , Warsaw 01-224 , Poland
| | - Anna Laskowska
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Adam Guśpiel
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Jolanta Solecka
- National Institute of Public Health-National Institute of Hygiene , Chocimska Str. 24 , Warsaw 00-791 , Poland
| | - Marta Bochynska-Czyż
- Mossakowski Medical Research Centre PAS , Pawinskiego Str. 5 , 02-106 Warsaw , Poland
| | - Andrzej W Lipkowski
- Mossakowski Medical Research Centre PAS , Pawinskiego Str. 5 , 02-106 Warsaw , Poland
| | - Katarzyna Trzeciak
- Institute of Organic Chemistry PAS , Kasprzaka Str. 44/54 , Warsaw 01-224 , Poland.,Centre of Molecular and Macromolecular Studies PAS , Sienkiewicza 112 , 90-363 Lodz , Poland
| | | |
Collapse
|
50
|
PAMAM dendrimer - cell membrane interactions. Adv Colloid Interface Sci 2018; 257:1-18. [PMID: 30008347 DOI: 10.1016/j.cis.2018.06.005] [Citation(s) in RCA: 126] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/20/2018] [Accepted: 06/21/2018] [Indexed: 12/16/2022]
Abstract
PAMAM dendrimers have been conjectured for a wide range of biomedical applications due to their tuneable physicochemical properties. However, their application has been hindered by uncertainties in their cytotoxicity, which is influenced by dendrimer generation (i.e. size and surface group density), surface chemistry, and dosage, as well as cell specificity. In this review, biomedical applications of polyamidoamine (PAMAM) dendrimers and some related cytotoxicity studies are first outlined. Alongside these in vitro experiments, lipid membranes such as supported lipid bilayers (SLBs), liposomes, and Langmuir monolayers have been used as cell membrane models to study PAMAM dendrimer-membrane interactions. Related experimental and theoretical studies are summarized, and the physical insights from these studies are discussed to shed light on the fundamental understanding of PAMAM dendrimer-cell membrane interactions. We conclude with a summary of some questions that call for further investigations.
Collapse
|