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Lee SB, Abdal Dayem A, Kmiecik S, Lim KM, Seo DS, Kim HT, Kumar Biswas P, Do M, Kim DH, Cho SG. Efficient improvement of the proliferation, differentiation, and anti-arthritic capacity of mesenchymal stem cells by simply culturing on the immobilized FGF2 derived peptide, 44-ERGVVSIKGV-53. J Adv Res 2024; 62:119-141. [PMID: 37777063 DOI: 10.1016/j.jare.2023.09.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 08/23/2023] [Accepted: 09/26/2023] [Indexed: 10/02/2023] Open
Abstract
INTRODUCTION The stem cell microenvironment has been evidenced to robustly affect its biological functions and clinical grade. Natural or synthetic growth factors, especially, are essential for modulating stem cell proliferation, metabolism, and differentiation via the interaction with specific extracellular receptors. Fibroblast growth factor-2 (FGF-2) possesses pleiotropic functions in various tissues and organs. It interacts with the FGF receptor (FGFR) and activates FGFR signaling pathways, which involve numerous biological functions, such as angiogenesis, wound healing, cell proliferation, and differentiation. OBJECTIVES Here, we aim to explore the molecular functions, mode of action, and therapeutic activity of yet undetermined function, FGF-2-derived peptide, FP2 (44-ERGVVSIKGV-53) in promoting the proliferation, differentiation, and therapeutic application of human Wharton's jelly mesenchymal stem cells (hWJ-MSCs) in comparison to other test peptides, canofin1 (FP1), hexafin2 (FP3), and canofin3 (FP4) with known functions. METHODS The immobilization of test peptides that are fused with mussel adhesive proteins (MAP) on the culture plate was carried out via EDC/NHS chemistry. Cell Proliferation assay, colony-forming unit, western blotting analysis, gene expression analysis, RNA-Seq. analysis, osteogenic, and chondrogenic differentiation capacity were applied to test the activity of the test peptides. We additionally utilized three-dimensional (3D) structural analysis and artificial intelligence (AI)-based AlphaFold2 and CABS-dock programs for receptor interaction prediction of the peptide receptor. We also verified the in vivo therapeutic capacity of FP2-cultured hWJ-MSCs using an osteoarthritis mice model. RESULTS Culture of hWJ-MSC onto an FP2-immobilized culture plate showed a significant increase in cell proliferation (n = 3; *p < 0.05, **p < 0.01) and the colony-forming unit (n = 3; *p < 0.05, **p < 0.01) compared with the test peptides. FP2 showed a significantly upregulated phosphorylation of FRS2α and FGFR1 and activated the AKT and ERK signaling pathways (n = 3; *p < 0.05, **p < 0.01, ***p < 0.001). Interestingly, we detected efficient FP2 receptor binding that was predicted using AI-based tools. Treatment with an AKT inhibitor significantly abrogated the FP2-mediated enhancement of cell differentiation (n = 3; *p < 0.05, **p < 0.01, ***p < 0.001). Intra-articular injection of FP2-cultured MSCs significantly mitigated arthritis symptoms in an osteoarthritis mouse model, as shown through the functional tests (n = 10; *p < 0.05, **p < 0.01, ***p < 0.001, ****p < 0.0001), modulation of the expression level of the pro-inflammatory and anti-inflammatory genes, and improved osteochondral regeneration as demonstrated by tissue sections. CONCLUSION Our study identified the FGF-2-derived peptide FP2 as a promising candidate peptide to improve the therapeutic potential of hWJ-MSCs, especially in bone and cartilage regeneration.
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Affiliation(s)
- Soo Bin Lee
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Sebastian Kmiecik
- Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw, 02-089 Warsaw, Poland
| | - Kyung Min Lim
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; R&D Team, StemExOne Co., Ltd., 307 KU Technology Innovation Bldg, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Dong Sik Seo
- Stem Cell Research Center of AMOLIFESCIENCE Co., Ltd, 91, Gimpo-daero 1950 Beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Hyeong-Taek Kim
- Stem Cell Research Center of AMOLIFESCIENCE Co., Ltd, 91, Gimpo-daero 1950 Beon-gil, Tongjin-eup, Gimpo-si, Gyeonggi-do 10014, Republic of Korea
| | - Polash Kumar Biswas
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Minjae Do
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Deok-Ho Kim
- Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205 USA
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, Molecular & Cellular Reprogramming Center and Institute of Advanced Regenerative Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea; R&D Team, StemExOne Co., Ltd., 307 KU Technology Innovation Bldg, 120, Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Liao M, Gong H, Liu H, Shen K, Ge T, King S, Schweins R, McBain AJ, Hu X, Lu JR. Combination of a pH-responsive peptide amphiphile and a conventional antibiotic in treating Gram-negative bacteria. J Colloid Interface Sci 2024; 659:397-412. [PMID: 38183806 DOI: 10.1016/j.jcis.2023.12.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 12/16/2023] [Accepted: 12/24/2023] [Indexed: 01/08/2024]
Abstract
BACKGROUND Clinical treatments ofgastric infections using antibiotics suffer from the undesired killing of commensal bacteria and emergence of antibiotic resistance. It is desirable to develop pH-responsive antimicrobial peptides (AMPs) that kill pathogenic bacteria such as H. pyloriand resistant E. coli under acidic environment with minimal impact to commensal bacteria whilst not causing antibiotic resistance. EXPERIMENTS Using a combined approach of cell assays, molecular dynamics (MD) simulations and membrane models facilitating biophysical and biochemical measurements including small angle neutron scattering (SANS), we have characterized the pH-responsive physiochemical properties and antimicrobial performance of two amphiphilic AMPs, GIIKDIIKDIIKDI-NH2 and GIIKKIIDDIIKKI-NH2 (denoted as 3D and 2D, respectively), that were designed by selective substitutions of cationic residues of Lys (K) in the extensively studied AMP G(IIKK)3I-NH2 with anionic residue Asp (D). FINDINGS Whilst 2D kept non-ordered coils across the entire pH range studied, 3D displayed a range of secondary structures when pH was shifted from basic to acidic, with distinct self-assembly into nanofibers in aqueous environment. Further experimental and modeling studies revealed that the AMPs interacted differently with the inner and outer membranes of Gram-negative bacteria in a pH-responsive manner and that the structural features characterized by membrane leakage and intramembrane nanoaggregates revealed from fluorescence spectroscopy and SANS were well linked to antimicrobial actions. Different antimicrobial efficacies of 2D and 3D were underlined by the interplay between their ability to bind to the outer membrane lipid LPS (lipopolysaccharide), outer membrane permeability change and inner membrane depolarization and leakage. Furthermore, AMP's binding with the inner membrane under acidic condition caused both the dissipation of membrane potential (Δψ) and the continuous dissipation of transmembrane ΔpH, with Δψ and ΔpH being the key components of the proton motive force. Combinations of antibiotic (Minocycline) with the pH-responsive AMP generated the synergistic effects against Gram-negative bacteria only under acidic condition. These features are crucial to target applications to gastric infections, anti-acne and wound healing.
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Affiliation(s)
- Mingrui Liao
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Haoning Gong
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Huayang Liu
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Kangcheng Shen
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Tianhao Ge
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Stephen King
- ISIS Pulsed Neutron & Muon Source, STFC Rutherford Appleton Laboratory, Didcot OX11 0QX, UK
| | | | - Andrew J McBain
- Division of Pharmacy and Optometry, Faculty of Biology, Medicine and Health, The University of Manchester, Oxford Road, Manchester M13 9PL, UK
| | - Xuzhi Hu
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
| | - Jian R Lu
- Biological Physics Laboratory, Department of Physics and Astronomy, School of Natural Science, The University of Manchester, Oxford Road, Manchester M13 9PL, UK.
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Gupta D, Gupta V, Nath D, Miglani C, Mandal D, Pal A. Stimuli-Responsive Self-Assembly Disassembly in Peptide Amphiphiles to Endow Block- co-Fibers and Tunable Piezoelectric Response. ACS APPLIED MATERIALS & INTERFACES 2023; 15:25110-25121. [PMID: 35767722 DOI: 10.1021/acsami.2c05469] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Supramolecular assemblies with well-defined structural attenuation toward varied functional implications are an emerging area in mimicking natural biomaterials. In that regard, the redox stimuli-responsive ferrocene moiety can reversibly change between a nonpolar ferrocenyl and polar ferrocenium cation that endows interesting modular features to the building blocks with respect to self-assembly/disassembly. We design a series of ferrocene anchored peptide fragment NVFFAKKC using hydrophobic alkyl spacers of different chain lengths. Increasing the spacer length between the redox-responsive and self-assembling motifs increases the propensity to form robust nanofibers, which can be physically cross-linked to form hydrogels. The controlled redox response of the ferrocene moiety tandem with pH control provides access to structural control over the peptide nanostructures and tunable mechanical strengths. Further, such redox-sequestered dormant states hinder the spontaneous nucleation process that we exploit toward seeded supramolecular polymerization to form block cofibers composed of redox-responsive periphery and nonresponsive cores. Finally, such redox sequestration of peptide self-assembly renders an on-off piezoelectric response for potential utilization in peptide bioelectronics.
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Affiliation(s)
- Deepika Gupta
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Varun Gupta
- Quantum Materials and Devices, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Debasish Nath
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Chirag Miglani
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Dipankar Mandal
- Quantum Materials and Devices, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
| | - Asish Pal
- Chemical Biology Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali, Punjab 140306, India
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Abdal Dayem A, Lee SB, Lim KM, Kim A, Shin HJ, Vellingiri B, Kim YB, Cho SG. Bioactive peptides for boosting stem cell culture platform: Methods and applications. Biomed Pharmacother 2023; 160:114376. [PMID: 36764131 DOI: 10.1016/j.biopha.2023.114376] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/02/2023] [Accepted: 02/03/2023] [Indexed: 02/10/2023] Open
Abstract
Peptides, short protein fragments, can emulate the functions of their full-length native counterparts. Peptides are considered potent recombinant protein alternatives due to their specificity, high stability, low production cost, and ability to be easily tailored and immobilized. Stem cell proliferation and differentiation processes are orchestrated by an intricate interaction between numerous growth factors and proteins and their target receptors and ligands. Various growth factors, functional proteins, and cellular matrix-derived peptides efficiently enhance stem cell adhesion, proliferation, and directed differentiation. For that, peptides can be immobilized on a culture plate or conjugated to scaffolds, such as hydrogels or synthetic matrices. In this review, we assess the applications of a variety of peptides in stem cell adhesion, culture, organoid assembly, proliferation, and differentiation, describing the shortcomings of recombinant proteins and their full-length counterparts. Furthermore, we discuss the challenges of peptide applications in stem cell culture and materials design, as well as provide a brief outlook on future directions to advance peptide applications in boosting stem cell quality and scalability for clinical applications in tissue regeneration.
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Affiliation(s)
- Ahmed Abdal Dayem
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Soo Bin Lee
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Kyung Min Lim
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Aram Kim
- Department of Urology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Hyun Jin Shin
- Department of Ophthalmology, Research Institute of Medical Science, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Balachandar Vellingiri
- Stem cell and Regenerative Medicine/Translational Research, Department of Zoology, School of Basic Sciences, Central University of Punjab (CUPB), Bathinda 151401, Punjab, India
| | - Young Bong Kim
- Department of Biomedical Science & Engineering, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea
| | - Ssang-Goo Cho
- Department of Stem Cell and Regenerative Biotechnology, KU Convergence Science and Technology Institute, Konkuk University, Seoul 05029, Republic of Korea; R&D Team, StemExOne co., ltd. 303, Life Science Bldg, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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Lu T, Xia B, Chen G. Advances in polymer-based cell encapsulation and its applications in tissue repair. Biotechnol Prog 2023; 39:e3325. [PMID: 36651921 DOI: 10.1002/btpr.3325] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2022] [Revised: 01/06/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023]
Abstract
Cell microencapsulation is a more widely accepted area of biological encapsulation. In most cases, it involves fixing cells in polymer scaffolds or semi-permeable hydrogel capsules, providing the environment for protecting cells, allowing the exchange of nutrients and oxygen, and protecting cells against the attack of the host immune system by preventing the entry of antibodies and cytotoxic immune cells. Hydrogel encapsulation provides a three-dimensional (3D) environment similar to that experienced in vivo, so it can maintain normal cellular functions to produce tissues similar to those in vivo. Embedded cells can be genetically modified to release specific therapeutic products directly at the target site, thereby eliminating the side effects of systemic treatments. Cellular microcarriers need to meet many extremely high standards regarding their biocompatibility, cytocompatibility, immunoseparation capacity, transport, mechanical, and chemical properties. In this article, we discuss the biopolymer gels used in tissue engineering applications and the brief introduction of cell encapsulation for therapeutic protein production. Also, we review polymer biomaterials and methods for preparing cell microcarriers for biomedical applications. At the same time, in order to improve the application performance of cell microcarriers in vivo, we also summarize the main limitations and improvement strategies of cell encapsulation. Finally, the main applications of polymer cell microcarriers in regenerative medicine are summarized.
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Affiliation(s)
- Tangfang Lu
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, People's Republic of China
| | - Bin Xia
- Engineering Research Center for Waste Oil Recovery Technology and Equipment, Ministry of Education, Chongqing Technology and Business University, Chongqing, People's Republic of China
| | - Guobao Chen
- School of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing, People's Republic of China
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Akbal Vural O, Yaman YT, Abaci S. Secondary metabolite‐entrapped, anti‐GPA33 targeted poly‐dopamine nanoparticles and their effectiveness in cancer treatment. J Appl Polym Sci 2022. [DOI: 10.1002/app.52274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Oznur Akbal Vural
- Advanced Technologies Application and Research Center Hacettepe University Ankara Turkey
| | - Yesim Tugce Yaman
- Advanced Technologies Application and Research Center Hacettepe University Ankara Turkey
- Analytical Chemistry Division, Department of Chemistry Hacettepe University Ankara Turkey
| | - Serdar Abaci
- Analytical Chemistry Division, Department of Chemistry Hacettepe University Ankara Turkey
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Wang J, Liu J, Yang Z. Recent advances in peptide-based nanomaterials for targeting hypoxia. NANOSCALE ADVANCES 2021; 3:6027-6039. [PMID: 36133944 PMCID: PMC9418673 DOI: 10.1039/d1na00637a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 09/01/2021] [Indexed: 06/16/2023]
Abstract
Hypoxia is a prominent feature of many severe diseases such as malignant tumors, ischemic strokes, and rheumatoid arthritis. The lack of oxygen has a paramount impact on angiogenesis, invasion, metastasis, and chemotherapy resistance. The potential of hypoxia as a therapeutic target has been increasingly recognized over the last decade. In order to treat these disease states, peptides have been extensively investigated due to their advantages in safety, target specificity, and tumor penetrability. Peptides can overcome difficulties such as low drug/energy delivery efficiency, hypoxia-induced drug resistance, and tumor nonspecificity. There are three main strategies for targeting hypoxia through peptide-based nanomaterials: (i) using peptide ligands to target cellular environments unique to hypoxic conditions, such as cell surface receptors that are upregulated in cells under hypoxic conditions, (ii) utilizing peptide linkers sensitive to the hypoxic microenvironment that can be cleaved to release therapeutic or diagnostic payloads, and (iii) a combination of the above where targeting peptides will localize the system to a hypoxic environment for it to be selectively cleaved to release its payload, forming a dual-targeting system. This review focuses on recent developments in the design and construction of novel peptide-based hypoxia-targeting nanomaterials, followed by their mechanisms and potential applications in diagnosis and treatment of hypoxic diseases. In addition, we address challenges and prospects of how peptide-based hypoxia-targeting nanomaterials can achieve a wider range of clinical applications.
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Affiliation(s)
- Jun Wang
- School of Pharmacy, Jining Medical University Rizhao 276800 China
| | - Jing Liu
- School of Pharmacy, Jining Medical University Rizhao 276800 China
| | - Zhongxing Yang
- School of Pharmacy, Jining Medical University Rizhao 276800 China
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Makhlynets OV, Caputo GA. Characteristics and therapeutic applications of antimicrobial peptides. BIOPHYSICS REVIEWS 2021; 2:011301. [PMID: 38505398 PMCID: PMC10903410 DOI: 10.1063/5.0035731] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/31/2020] [Indexed: 12/20/2022]
Abstract
The demand for novel antimicrobial compounds is rapidly growing due to the phenomenon of antibiotic resistance in bacteria. In response, numerous alternative approaches are being taken including use of polymers, metals, combinatorial approaches, and antimicrobial peptides (AMPs). AMPs are a naturally occurring part of the immune system of all higher organisms and display remarkable broad-spectrum activity and high selectivity for bacterial cells over host cells. However, despite good activity and safety profiles, AMPs have struggled to find success in the clinic. In this review, we outline the fundamental properties of AMPs that make them effective antimicrobials and extend this into three main approaches being used to help AMPs become viable clinical options. These three approaches are the incorporation of non-natural amino acids into the AMP sequence to impart better pharmacological properties, the incorporation of AMPs in hydrogels, and the chemical modification of surfaces with AMPs for device applications. These approaches are being developed to enhance the biocompatibility, stability, and/or bioavailability of AMPs as clinical options.
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Affiliation(s)
- Olga V. Makhlynets
- Department of Chemistry, Syracuse University, 111 College Place, Syracuse, New York 13244, USA
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Mushnoori S, Lu CY, Schmidt K, Zang E, Dutt M. Peptide-based vesicles and droplets: a review. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 33:053002. [PMID: 32942264 DOI: 10.1088/1361-648x/abb995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 09/17/2020] [Indexed: 06/11/2023]
Abstract
Peptide assembly is an increasingly important field of study due to the versatility, tunability and vast design space of amino acid based biomolecular assemblies. Peptides can be precisely engineered to possess various useful properties such as the ability to form supramolecular assemblies, desired response to pH, or thermal stability. These peptide supramolecular assemblies have diverse morphologies including vesicles, nanotubes, nanorods and ribbons. Of specific interest is the domain of engineering peptides that aggregate into spherical nanostructures due to their encapsulation properties: the ability to hold, transport and release chemical payloads in a controllable manner. This is invaluable to the fields of nanomedicine and targeted drug delivery. In this review, the state of the art in the domain of peptide-based vesicles and nanospheres is summarized. Specifically, an overview of the assembly of peptides into nanovesicles and nanospheres is provided. Both aromatic as well as aliphatic side chain amino acids are discussed. The domain of aromatic side chained amino acid residues is largely dominated by phenylalanine based peptides and variants thereof. Tyrosine also demonstrates similar aggregation properties. Both experimentally and computationally driven approaches are discussed. The domain of aliphatic amino acid residues based vesicles and droplets is broader, and details multiple amino acid residues such as alanine, valine, lysine, glycine, proline, and aspartic acid. Finally, a discussion on potential future directions is provided.
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Affiliation(s)
- Srinivas Mushnoori
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America
| | - Chien Y Lu
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America
| | - Kassandra Schmidt
- Biomedical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America
| | - Ethan Zang
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America
| | - Meenakshi Dutt
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, United States of America
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Ghosh G, Fernández G. pH- and concentration-dependent supramolecular self-assembly of a naturally occurring octapeptide. Beilstein J Org Chem 2020; 16:2017-2025. [PMID: 32874348 PMCID: PMC7445398 DOI: 10.3762/bjoc.16.168] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Accepted: 07/31/2020] [Indexed: 12/13/2022] Open
Abstract
Peptide-based biopolymers represent highly promising biocompatible materials with multiple applications, such as tailored drug delivery, tissue engineering and regeneration, and as stimuli-responsive materials. Herein, we report the pH- and concentration-dependent self-assembly and conformational transformation of the newly synthesized octapeptide PEP-1. At pH 7.4, PEP-1 forms β-sheet-rich secondary structures into fractal-like morphologies, as verified by circular dichroism (CD), Fourier-transform infrared (FTIR) spectroscopy, thioflavin T (ThT) fluorescence spectroscopy assay, and atomic force microscopy (AFM). Upon changing the pH value (using pH 5.5 and 13.0), PEP-1 forms different types of secondary structures and resulting morphologies due to electrostatic repulsion between charged amino acids. PEP-1 can also form helical or random-coil secondary structures at a relatively low concentration. The obtained pH-sensitive self-assembly behavior of the target octapeptide is expected to contribute to the development of novel drug nanocarrier assemblies.
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Affiliation(s)
- Goutam Ghosh
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Correnstraße 40, 48149 Münster, Germany
| | - Gustavo Fernández
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Correnstraße 40, 48149 Münster, Germany
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pH and temperature-responsive POSS-based poly(2-(dimethylamino)ethyl methacrylate) for highly efficient Cr(VI) adsorption. Colloid Polym Sci 2020. [DOI: 10.1007/s00396-020-04737-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Tarvirdipour S, Huang X, Mihali V, Schoenenberger CA, Palivan CG. Peptide-Based Nanoassemblies in Gene Therapy and Diagnosis: Paving the Way for Clinical Application. Molecules 2020; 25:E3482. [PMID: 32751865 PMCID: PMC7435460 DOI: 10.3390/molecules25153482] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 12/26/2022] Open
Abstract
Nanotechnology approaches play an important role in developing novel and efficient carriers for biomedical applications. Peptides are particularly appealing to generate such nanocarriers because they can be rationally designed to serve as building blocks for self-assembling nanoscale structures with great potential as therapeutic or diagnostic delivery vehicles. In this review, we describe peptide-based nanoassemblies and highlight features that make them particularly attractive for the delivery of nucleic acids to host cells or improve the specificity and sensitivity of probes in diagnostic imaging. We outline the current state in the design of peptides and peptide-conjugates and the paradigms of their self-assembly into well-defined nanostructures, as well as the co-assembly of nucleic acids to form less structured nanoparticles. Various recent examples of engineered peptides and peptide-conjugates promoting self-assembly and providing the structures with wanted functionalities are presented. The advantages of peptides are not only their biocompatibility and biodegradability, but the possibility of sheer limitless combinations and modifications of amino acid residues to induce the assembly of modular, multiplexed delivery systems. Moreover, functions that nature encoded in peptides, such as their ability to target molecular recognition sites, can be emulated repeatedly in nanoassemblies. Finally, we present recent examples where self-assembled peptide-based assemblies with "smart" activity are used in vivo. Gene delivery and diagnostic imaging in mouse tumor models exemplify the great potential of peptide nanoassemblies for future clinical applications.
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Affiliation(s)
- Shabnam Tarvirdipour
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland; (S.T.); (X.H.); (V.M.)
- Department of Biosystem Science and Engineering, ETH Zurich, Mattenstrasse 26, 4058 Basel, Switzerland
| | - Xinan Huang
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland; (S.T.); (X.H.); (V.M.)
| | - Voichita Mihali
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland; (S.T.); (X.H.); (V.M.)
| | - Cora-Ann Schoenenberger
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland; (S.T.); (X.H.); (V.M.)
| | - Cornelia G. Palivan
- Department of Chemistry, University of Basel, Mattenstrasse 24a, 4058 Basel, Switzerland; (S.T.); (X.H.); (V.M.)
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13
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Functional Glycopolypeptides: Synthesis and Biomedical Applications. ADVANCES IN POLYMER TECHNOLOGY 2020. [DOI: 10.1155/2020/6052078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Employing natural-based renewable sugar and saccharide resources to construct functional biopolymer mimics is a promising research frontier for green chemistry and sustainable biotechnology. As the mimics/analogues of natural glycoproteins, synthetic glycopolypeptides attracted great attention in the field of biomaterials and nanobiotechnology. This review describes the synthetic strategies and methods of glycopolypeptides and their analogues, the functional self-assemblies of the synthesized glycopolypeptides, and their biological applications such as biomolecular recognition, drug/gene delivery, and cell adhesion and targeting, as well as cell culture and tissue engineering. Future outlook of the synthetic glycopolypeptides was also discussed.
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14
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Saroj S, Janni DS, Ummadi CR, Kannoth Manheri M. Functionalizable oxanorbornane-based head-group in the design of new Non-ionic amphiphiles and their drug delivery properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 112:110857. [PMID: 32409031 DOI: 10.1016/j.msec.2020.110857] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 12/23/2019] [Accepted: 03/16/2020] [Indexed: 11/20/2022]
Abstract
A new group of non-ionic amphiphiles with short alkyl chains and functionalizable oxanorbornane-based head group for drug delivery application are presented. They can be prepared through a sequence that starts with cycloaddition of Boc-protected furfuryl amine with maleic anhydride and reduction of the resulting adduct with LiAlH4 to get a diol intermediate. Introduction of alkyl chains through these primary hydroxyl groups and subsequent head-group modification via cis-hydroxylation resulted in a number of new amphiphiles in good yields. They were characterized by various spectro-analytical techniques and then subjected to drug-delivery studies using ibuprofen as a model drug. Functionalization of the head group through the amine functionality was also done with an intention to improve lipid packing to get better drug-loading and release properties. Irrespective of the nature of groups attached through this amine unit, all amphiphiles with short alkyl chains were found to assemble into spherical aggregates when drop-casted from various organic solvents. The same assembly preference prevailed in their formulations containing lipid-cholesterol-drug in 1: 0.5:1 ratio as well, and these particles had diameters <300 nm. Apart from good drug-loading efficiencies, these amphiphiles exhibited controlled release properties and did not show any indication of toxicity when assayed against NIH3T3 cells. The formulation based on lipid having a phenylalanine unit on the head group (1.10c) turned out to be the best in this series which showed a loading efficiency of 57.6% with a controlled release of ~42% by end of 24 h. Because of efficient layering that is facilitated by hydrogen bonding involving well-directed hydroxyl groups on the head group, amphiphiles with alkyl chains as short as C5 are able to act as efficient drug delivery systems, which is one of the highlights of this work.
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Affiliation(s)
- Soumya Saroj
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Devi Sirisha Janni
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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15
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Ji YR, Homaeigohar S, Wang YH, Lin C, Su TY, Cheng CC, Yang SH, Young TH. Selective Regulation of Neurons, Glial Cells, and Neural Stem/Precursor Cells by Poly(allylguanidine)-Coated Surfaces. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48381-48392. [PMID: 31845571 DOI: 10.1021/acsami.9b17143] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Poly(allylguanidine) (PAG) was synthesized and characterized as a polycationic coating material for culturing neurons, glial cells, and neural stem/precursor cells (NSPCs) to apply PAG for neural tissue engineering. For comparison, poly-d-lysine (PDL), the golden benchmark of the neuron cell culture system, was also used in this study. When PAG was subjected to a mixed culture of neurons and glial cells, cell adhesion and neurite extension of neuronal cells were clearly observed but only few glial cells could be found alongside the neurons. Compared to PDL, the significantly lower density of the glial fibrillary acidic protein-positive cells implied that PAG suppressed the glial cell development. Likewise, PAG was demonstrated to dominate the differentiation of NSPCs principally into neurons. To investigate whether the different effects of PAG and PDL on neuron and glial cell behaviors resulted from the difference of guanidinium cations and ammonium cations, poly-l-arginine (PLA) was included and compared in this study. Similar to PDL, PLA supported high neuron and glial cell viability simultaneously. Consequently, glial cell growth and viability restrained on PAG was not only affected by the side-chain guanidino groups but also by the backbone structure property. The absence of the peptide structure in the backbone of PAG and the conformation of coated PAG on tissue culture polystyrene possibly determined the polycationic biomaterial to limit the growth of glial cells.
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Affiliation(s)
- You-Ren Ji
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Shahin Homaeigohar
- Nanochemistry and Nanoengineering, School of Chemical Engineering, Department of Chemistry and Materials Science , Aalto University , Kemistintie 1 , 00076 Aalto , Finland
| | - Yu-Hsin Wang
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Chen Lin
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | - Tai-Yuan Su
- Department of Electrical Engineering , Yuan-Ze University , Taoyuan 320 , Taiwan
| | - Ching-Chia Cheng
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
| | | | - Tai-Horng Young
- Department of Biomedical Engineering , National Taiwan University , Taipei 100 , Taiwan
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16
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Kohout VR, Pohl NLB. Automated solution-phase syntheses of alpha 1 → 2, 1 → 3 type rhamnans and rhamnan sulfate fragments. Carbohydr Res 2019; 486:107829. [PMID: 31614269 DOI: 10.1016/j.carres.2019.107829] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2019] [Revised: 09/30/2019] [Accepted: 10/02/2019] [Indexed: 10/25/2022]
Abstract
Rhamnan and rhamnan sulfate are naturally occurring carbohydrates that have important biological functions and possible therapeutic applications, but studies are limited to the microheterogeneous mixtures from natural sources. This work reports the first synthesis of any sulfated rhamnan fragments and successful automation of the process with a recently developed automated solution-phase approach using N-iodosuccinimide/trimethylsilyl triflate (NIS/TMSOTf) promotor and levulinoyl ester deprotection conditions. The automated solution-phase activation/deprotection approach was initially able to create alpha 1 → 2, 1 → 3 type rhamnan di- and trisaccharide in moderate yields. Once these targets were achieved, a process to use SO3•pyridine complex in DMF for sulfation compatible with an automated solution-phase liquid handling system was developed and successfully applied to carbohydrate sulfation to create two rhamnan sulfate fragments with differing monosulfation patterns.
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Affiliation(s)
- Victoria R Kohout
- Indiana University, Department of Chemistry, 212 S. Hawthorne Drive, Bloomington, IN, 47405, United States
| | - Nicola L B Pohl
- Indiana University, Department of Chemistry, 212 S. Hawthorne Drive, Bloomington, IN, 47405, United States.
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17
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Zhong S, Chen C, Yang G, Zhu Y, Cao H, Xu B, Luo Y, Gao Y, Zhang W. Acid-Triggered Nanoexpansion Polymeric Micelles for Enhanced Photodynamic Therapy. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33697-33705. [PMID: 31487149 DOI: 10.1021/acsami.9b12620] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Photodynamic therapy (PDT) as a noninvasive and selective treatment technology has presented great potential in cancer prevention and precision medicine, but its therapeutic efficacy is still greatly inhibited by the limitations of photosensitizers (PSs) in the microenvironment such as the aggregation caused quenching (ACQ) of PSs. Herein, we proposed an "acid-triggered nanoexpansion" method to further reduce the aggregation of photosensitizers by constructing acetal-based polymeric micelles. A pH-responsive amphiphilic block copolymer, POEGMA-b-[PTTMA-co-PTPPC6MA] was synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization and self-assembled into spherical micelles. In the normal physiological environment, the micelles were stable and had good biocompatibility. Upon entry into the acidic microenvironment of the tumor, the acid-responsive hydrophobic 2, 4, 6-trimethoxybenzaldehyde in the micelles hydrolyzed and generated a hydrophilic diol moiety. Although the hydrophility of the micellar core was increased, the assembled structure of block copolymers was not dissociated but expanded. The responsive expansion of the micelles could allow the photosensitizers to well-disperse in the core, whereas more tumor-dissolved oxygen entered the micelles. This phenomenon could provide a better nanoenvironment for photosensitizers to reduce the ACQ of the photosensitizers, leading to more singlet oxygen (1O2) produced under the laser irradiation (650 nm). Both in vitro and in vivo studies have demonstrated that the remarkable photodynamic therapeutic efficacy of acid-responsive micelles could be realized. Thus, the acid-triggered nanoexpansion method might provide more possibilities to develop efficient platforms for treating cancers.
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18
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Liu J, Shang J, Chen Y, Tian Y, Yang Q, Chen M, Xiong B, Zhang XB. A surface-engineered NIR light-responsive actuator for controllable modulation of collective cell migration. J Mater Chem B 2019; 7:5528-5534. [PMID: 31451832 DOI: 10.1039/c9tb01038f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mechanical signal transduction is fundamental for maintaining and regulating cellular processes and functions. Here, we proposed a novel near-infrared (NIR) light-responsive optomechanical actuator for the directional regulation of collective cell adhesion and migration. This optomechanical actuator that is made up of a thermal-responsive copolymer hydrogel and gold nanorods (AuNRs), enables non-invasive activation by NIR light stimulation. The activation of the optomechanical actuator leads to hydrogel contraction and an increase in Young's modulus, which could be used for applying contraction force to cells cultured on the surface of the hydrogel actuator. By grafting cell adhesive peptide ligands, the cells could attach onto the surface of the actuator and displayed a NIR light illumination intensity dependent migration rate along a random orientation. To achieve the controllable modulation of cell behaviors, we employed a microcontact printing strategy for patterned presentation of adhesive ligands on this actuator and achieved directional cell alignment and cell migration through optomechanical actuation. These demonstrations suggest that this robust optomechanical actuator is promising for the optical modulation of cellular events and cell functions in various bioapplications.
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Affiliation(s)
- Jiayu Liu
- Molecular Science and Biomedicine Laboratory, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, P. R. China.
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19
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Rimmerman D, Leshchev D, Hsu DJ, Hong J, Abraham B, Henning R, Kosheleva I, Chen LX. Revealing Fast Structural Dynamics in pH-Responsive Peptides with Time-Resolved X-ray Scattering. J Phys Chem B 2019; 123:2016-2021. [PMID: 30763085 PMCID: PMC6533112 DOI: 10.1021/acs.jpcb.9b00072] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Many biomaterials can adapt to changes in the local biological environment (such as pH, temperature, or ionic composition) in order to regulate function or deliver a payload. Such adaptation to environmental perturbation is typically a hierarchical process that begins with a response at a local structural level and then propagates to supramolecular and macromolecular scales. Understanding fast structural dynamics that occur upon perturbation is important for rational design of functional biomaterials. However, few nanosecond time-resolved methods can probe both intra- and intermolecular scales simultaneously with a high structural resolution. Here, we utilize time-resolved X-ray scattering to probe nanosecond to microsecond structural dynamics of poly-l-glutamic acid undergoing protonation via a pH jump initiated by photoexcitation of a photoacid. Our results provide insights into the protonation-induced hierarchical changes in packing of peptide chains, formation of a helical structure, and the associated collapse of the peptide chain.
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Affiliation(s)
- Dolev Rimmerman
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Denis Leshchev
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Darren J. Hsu
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Jiyun Hong
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - Baxter Abraham
- Department of Chemistry and Biochemistry, University of Delaware, Newark, Delaware 19716, United States
| | - Robert Henning
- Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Irina Kosheleva
- Center for Advanced Radiation Sources, The University of Chicago, Chicago, Illinois 60637, United States
| | - Lin X. Chen
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
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20
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Murawska GM, Poloni C, Simeth NA, Szymanski W, Feringa BL. Comparative Study of Photoswitchable Zinc-Finger Domain and AT-Hook Motif for Light-Controlled Peptide-DNA Binding. Chemistry 2019; 25:4965-4973. [PMID: 30735272 DOI: 10.1002/chem.201900090] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Indexed: 12/20/2022]
Abstract
DNA-peptide interactions are involved in key life processes, including DNA recognition, replication, transcription, repair, organization, and modification. Development of tools that can influence DNA-peptide binding non-invasively with high spatiotemporal precision could aid in determining its role in cells and tissues. Here, the design, synthesis, and study of photocontrolled tools for sequence-specific small peptide-DNA major and minor groove interactions are reported, shedding light on DNA binding by transcriptionally active peptides. In particular, photoswitchable moieties were implemented in the peptide backbone or turn region. In each case, DNA binding was affected by photochemical isomerization, as determined in fluorescent displacement assays on model DNA strands, which provides promising tools for DNA modulation.
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Affiliation(s)
- Gosia M Murawska
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Claudia Poloni
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Nadja A Simeth
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Wiktor Szymanski
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands.,Department of Radiology, University of Groningen, University Medical Centre Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Ben L Feringa
- Centre for Systems Chemistry, Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
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21
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Zhou W, Li Y, Yan J, Xiong P, Li Q, Cheng Y, Zheng Y. Construction of Self-defensive Antibacterial and Osteogenic AgNPs/Gentamicin Coatings with Chitosan as Nanovalves for Controlled release. Sci Rep 2018; 8:13432. [PMID: 30194357 PMCID: PMC6128911 DOI: 10.1038/s41598-018-31843-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 08/01/2018] [Indexed: 11/19/2022] Open
Abstract
To solve the Ti implants-associated infection and poor osseointegration problems, we have constructed the AgNPs/gentamicin (Gen)-loaded silk fibroin (SF) coating with acceptable antibacterial and osteogenic aptitude. Nevertheless, due to uncontrollably sustained drug release, this bactericidal coating encountered some tricky problems, such as local high Ag concentration, short life-span and potential cytotoxicity. In this work, a chitosan (CS) barrier layer was constructed to prebuilt the SF-based film by two means, dip-coating (DCS) and spin-coating (SCS). Intriguingly, the CS barrier layer constructed by spin-coating highly improved the hydrophilic and protein-absorbed performances. As verified in the release profile, both coatings showed a prolonged and pH-dependent pattern of Ag+ with an accelerated release in acidic condition. Also, the multilayer coating with a SCS barrier layer showed an apparent bacteria-trigged antibacterial and biofilm-inhibited performances, whereas the improvements of antibacterial abilities of DCS coating were limited. The mechanisms could be explained that the pH decrease induced by the attachment and proliferation of bacteria triggered collapse of CS barrier layer, accelerating the release of bactericides. Moreover, benefitted from pH-dependent release behavior of Ag and bioactive SCS layer, functional coatings highly enhanced the initial adhesion, migration and proliferation of preosteoblast MC3T3-E1 cells, and subsequently accelerated osteoblast differentiation (alkaline phosphatase production). A relevant aspect of this work was to demonstrate the essential effect of reasonable construction of self-defensive barrier layer in achieving the balance between the high-efficiency bacterial killing and osteogenic activity, and highlighted its excellent potential in clinical applications.
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Affiliation(s)
- Wenhao Zhou
- 0000 0001 2256 9319grid.11135.37Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China
| | - Yangyang Li
- 0000 0001 2256 9319grid.11135.37Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China
| | - Jianglong Yan
- 0000 0001 2256 9319grid.11135.37Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China
| | - Pan Xiong
- 0000 0001 2256 9319grid.11135.37Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China
| | - Qiyao Li
- 0000 0001 2097 4281grid.29857.31Department of Biomedical Engineering Materials Research Institute, The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, State College, PA 16802 USA
| | - Yan Cheng
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871, China.
| | - Yufeng Zheng
- 0000 0001 2256 9319grid.11135.37Academy for Advanced Interdisciplinary Studies, Peking University, Beijing, 100871 China ,0000 0001 2256 9319grid.11135.37Department of Advanced Materials and Nanotechnology, College of Engineering, Peking University, Beijing, 100871 China
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22
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Xu Y, Huang Y, Zhang X, Lu W, Yu J, Liu S. Carrier-free Janus nano-prodrug based on camptothecin and gemcitabine: Reduction-triggered drug release and synergistic in vitro antiproliferative effect in multiple cancer cells. Int J Pharm 2018; 550:45-56. [PMID: 30138703 DOI: 10.1016/j.ijpharm.2018.08.041] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 08/14/2018] [Accepted: 08/19/2018] [Indexed: 12/12/2022]
Abstract
A carrier-free and reduction-degradable Janus prodrug, termed as CPT-SS-GEM, was fabricated by redox-sensitive disulfide bond linked gemcitabine and camptothecin. This amphiphilic prodrug showed high drug loading capacity, 42.6% of CPT and 32.2% of GEM, respectively. Benefiting from its amphiphilic property, CPT-SS-GEM prodrug could self-assemble into Janus nano-prodrug in water without aid of any excipient. The morphology of the nano-prodrug was spherical particle confirmed by TEM. The rapid drug release from the nano-prodrug proceeded in a reduction-dependent manner, more than 90% of the native CPT and GEM were released in the mimic microenvironment of tumor cells (pH 6.5 PBS containing 2 mM DTT) within a period of 3 h. The concurrent and ratio-metric release of CPT and GEM endowed the Janus nano-prodrug CPT-SS-GEM with pronounced in vitro synergistic antiproliferative effect in multiple cancer cell lines when the inhibition rate of cancer cell proliferation exceeded 50%, including A549, NCI-H460, HCT116, HT-29, and MCF-7/ADR. The combination index values showed as followings, 1.04-0.4 (A549), 0.24-0.60 (NCI-H460), 0.42-0.16 (HCT116), 1.98-0.15 (HT-29), 0.36-0.19 (MCF-7/ADR). Taken together, the carrier-free, redox-sensitive Janus nano-prodrug CPT-SS-GEM is a promising candidate as synergistic combination of chemotherapeutics.
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Affiliation(s)
- Yanyun Xu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Yushu Huang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Xiongwen Zhang
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Wei Lu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Jiahui Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China.
| | - Shiyuan Liu
- Department of Radiology and Nuclear Medicine, Changzheng Hospital, Naval Medical University, Shanghai 200003, China
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23
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Falcone N, Kraatz HB. Supramolecular Assembly of Peptide and Metallopeptide Gelators and Their Stimuli-Responsive Properties in Biomedical Applications. Chemistry 2018; 24:14316-14328. [DOI: 10.1002/chem.201801247] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Revised: 04/17/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Natashya Falcone
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; 200 College St M5S 3E5 Toronto Canada
- Department of Physical and Environmental Science; University of Toronto Scarborough; 1065 Military Trail M1C 1A4 Toronto Canada
| | - Heinz-Bernhard Kraatz
- Department of Chemical Engineering and Applied Chemistry; University of Toronto; 200 College St M5S 3E5 Toronto Canada
- Department of Physical and Environmental Science; University of Toronto Scarborough; 1065 Military Trail M1C 1A4 Toronto Canada
- Department of Chemistry; University of Toronto; 80 St. George St M5S 3H6 Toronto Canada
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24
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Han K, Ma Z, Han H. Functional peptide-based nanoparticles for photodynamic therapy. J Mater Chem B 2018; 6:25-38. [DOI: 10.1039/c7tb02804k] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Photodynamic therapy as a non-invasive approach has obtained great research attention during the last decade.
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Affiliation(s)
- Kai Han
- State Key Laboratory of Agricultural Microbiology
- College of Science
- Bio-Medical Center of Huazhong Agricultural University
- Huazhong Agricultural University
- Wuhan 430070
| | - Zhaoyu Ma
- State Key Laboratory of Agricultural Microbiology
- College of Science
- Bio-Medical Center of Huazhong Agricultural University
- Huazhong Agricultural University
- Wuhan 430070
| | - Heyou Han
- State Key Laboratory of Agricultural Microbiology
- College of Science
- Bio-Medical Center of Huazhong Agricultural University
- Huazhong Agricultural University
- Wuhan 430070
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25
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Kaneko T, Ali MA, Captain I, Perlin P, Deming TJ. Polypeptide gels incorporating the exotic functional aromatic amino acid 4-amino-l-phenylalanine. Polym Chem 2018. [DOI: 10.1039/c8py00427g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
High-molecular-weight polypeptides with functional aromatic side chains, poly(4-amino-l-phenylalanine), were prepared by the metal-initiated polymerization of the Nα-carboxyanhydride of the corresponding amino acid, which is a microbial derivative of phenylalanine.
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Affiliation(s)
- Tatsuo Kaneko
- Graduate School of Advanced Science and Technology
- Energy and Environment Area
- Japan Advanced Institute of Science and Technologies
- Nomi
- Japan
| | - Mohammad Asif Ali
- Graduate School of Advanced Science and Technology
- Energy and Environment Area
- Japan Advanced Institute of Science and Technologies
- Nomi
- Japan
| | - Ilya Captain
- Departments of Bioengineering and Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
| | - Pesach Perlin
- Departments of Bioengineering and Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
| | - Timothy J. Deming
- Departments of Bioengineering and Chemistry and Biochemistry
- University of California
- Los Angeles
- USA
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26
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Brun MJ, Gomez EJ, Suh J. Stimulus-responsive viral vectors for controlled delivery of therapeutics. J Control Release 2017; 267:80-89. [PMID: 28842318 PMCID: PMC5723212 DOI: 10.1016/j.jconrel.2017.08.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 08/17/2017] [Accepted: 08/19/2017] [Indexed: 12/31/2022]
Abstract
Virus-based therapies have gained momentum as the next generation of treatments for a variety of serious diseases. In order to make these therapies more controllable, stimulus-responsive viral vectors capable of sensing and responding to specific environmental inputs are currently being developed. A number of viruses naturally respond to endogenous stimuli, such as pH, redox, and proteases, which are present at different concentrations in diseases and at different organ and organelle sites. Additionally, rather than relying on natural viral properties, efforts are underway to engineer viruses to respond to endogenous stimuli in new ways as well as to exogenous stimuli, such as temperature, magnetic field, and optical light. Viruses with stimulus-responsive capabilities, either nature-evolved or human-engineered, will be reviewed to capture the current state of the field. Stimulus-responsive viral vector design considerations as well as gaps in current research efforts will be identified.
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Affiliation(s)
- Mitchell J Brun
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, United States
| | - Eric J Gomez
- Department of Bioengineering, Rice University, Houston, TX, United States
| | - Junghae Suh
- Department of Bioengineering, Rice University, Houston, TX, United States; Systems, Synthetic, and Physical Biology Program, Rice University, Houston, TX, United States.
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27
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Davies RPW, Liu B, Maude S, Carrick LM, Nyrkova I, McLeish TC, Harris SA. Peptide strand length controls the energetics of self-assembly and morphology of β-sheet fibrils. Biopolymers 2017; 110. [PMID: 29127706 DOI: 10.1002/bip.23073] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 09/25/2017] [Accepted: 09/27/2017] [Indexed: 12/24/2022]
Abstract
Self-assembling peptides can be used as versatile, natural, and multifunctional building blocks to produce a variety of well-defined nanostructures, materials and devices for applications in medicine and nanotechnology. Here, we concentrate on the 1D self-assembly of de novo designed Px-2 peptide β-strands into anti-parallel β-sheet tapes and higher order aggregates. We study six members of the Px-2 family, ranging from 3 amino acids (aa) to 13 aa in length, using a range of complementary experimental techniques, computer simulation and theoretical statistical mechanics. The critical concentration for self-assembly (c*) is found to increase systematically with decreasing peptide length. The shortest peptide found to self-assemble into soluble β-tapes in water is a 5 amino acid residue peptide. These investigations help decipher the role of the peptide length in controlling self-assembly, aggregate morphology, and material properties. By extracting free energies from these data using a statistical mechanical analysis and combining the results with computer simulations at the atomistic level, we can extract the entropy of association for individual β-strands.
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Affiliation(s)
- Robert P W Davies
- Department of Oral Biology, University of Leeds, St James's University Hospital Leeds LS9 7TF
| | - Binbin Liu
- Department of Pediatrics, University of Oxford. Headington, Oxford, OX3 9DU
| | - Steven Maude
- School of Chemistry, University of Leeds, Leeds, LS2 9JT
| | - Lisa M Carrick
- School of Chemistry, University of Leeds, Leeds, LS2 9JT
| | | | - Tom C McLeish
- Department of Physics, Durham University, Durham, DH1 3LE
| | - Sarah A Harris
- School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT
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28
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Soylemez S, Yılmaz T, Buber E, Udum YA, Özçubukçu S, Toppare L. Polymerization and biosensor application of water soluble peptide-SNS type monomer conjugates. J Mater Chem B 2017; 5:7384-7392. [PMID: 32264188 DOI: 10.1039/c7tb01674c] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A simple and efficient approach for the preparation of a biosensing platform was developed based on newly designed peptide-SNS type monomer conjugates. The approach involves the electrochemical polymerization of the peptide-SNS type monomer on the electrode surface. To synthesize the peptide bearing monomers, the SNS-type monomer having a carboxylic acid functional group was anchored to the C-terminal of the peptide by solid phase peptide synthesis via coupling reagents. Utilization of peptides to increase the solubility of the monomers was first investigated in this report. The obtained monomers, soluble in water, were fully characterized by spectral analyses and utilized as matrices for biomolecule attachment. Polymerization of monomers in water has the potential to provide an alternative process for the electrochemical preparation of the polymers in aqueous media, without using any organic solvent. Under the optimized conditions, the biosensor responded to the target analyte, glucose, in a strikingly selective and sensitive manner, and showed promising feasibility for the quantitative analysis of glucose in beverages.
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Affiliation(s)
- Saniye Soylemez
- Department of Chemistry, Middle East Technical University, Ankara 06800, Turkey
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29
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Su H, Wang Y, Anderson CF, Koo JM, Wang H, Cui H. Recent progress in exploiting small molecule peptides as supramolecular hydrogelators. CHINESE JOURNAL OF POLYMER SCIENCE 2017. [DOI: 10.1007/s10118-017-1998-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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30
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Adibi-Motlagh B, Lotfi AS, Rezaei A, Hashemi E. Cell attachment evaluation of the immobilized bioactive peptide on a nanographene oxide composite. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 82:323-329. [PMID: 29025665 DOI: 10.1016/j.msec.2017.05.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 04/25/2017] [Accepted: 05/07/2017] [Indexed: 11/27/2022]
Abstract
The immobilization of bioactive peptides as key molecules in numerous biological and physiological functions holds promise for designing advanced biomaterials. Graphene and its derivatives, having unique physicochemical properties, have brought considerable attention in the life sciences. In this regard, the chemical manipulation of the graphene surface with bioactive peptides opens a new horizon to design bioactive materials for a variety of future nanobiotechnologies. In this study, the first straightforward strategy for the covalent immobilization of the cell-adhesion peptide onto the graphene surface based on the Ugi four-component assembly process (Ugi 4-CAP) will be presented. The modified adhesion motif peptide, as an amine component in the presence of formaldehyde, cyclohexylisocyanide and carboxylated-graphene (G-COOH), was adopted in a four component reaction to fabricate a peptide-graphene (Peptide-G) biomaterial in water as a green solvent at an ambient temperature. The amino functional groups corresponded to the modified adhesion motif peptide and were immobilized onto the graphene sheets, which were quantified by the Kaiser test. The sheets were characterized by further analyses with FT-IR, AFM, UV-vis, Raman and thermogravimetric analyses. The Peptide-G biomaterial showed excellent biocompatibility. In addition, the Peptide-G treated surface, due to the presence of RGD on the surface of the graphene, significantly accelerated the proliferation of human mesenchymal stem cells (hMSCs) at a better rate regarding the tissue plate.
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Affiliation(s)
- Behzad Adibi-Motlagh
- Department of Clinical Biochemistry, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran
| | - Abbas Sahebghadam Lotfi
- Department of Clinical Biochemistry, Faculty of Medical Science, Tarbiat Modares University, Tehran, Iran.
| | - Aram Rezaei
- Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ehsan Hashemi
- National Research Center for Transgenic Mouse, National Institute of Genetic Engineering and Biotechnology, P.O. Box 14965-161, Tehran, Iran
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31
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Kuan SL, Wang T, Weil T. Site-Selective Disulfide Modification of Proteins: Expanding Diversity beyond the Proteome. Chemistry 2016; 22:17112-17129. [PMID: 27778400 PMCID: PMC5600100 DOI: 10.1002/chem.201602298] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Indexed: 01/06/2023]
Abstract
The synthetic transformation of polypeptides with molecular accuracy holds great promise for providing functional and structural diversity beyond the proteome. Consequently, the last decade has seen an exponential growth of site-directed chemistry to install additional features into peptides and proteins even inside living cells. The disulfide rebridging strategy has emerged as a powerful tool for site-selective modifications since most proteins contain disulfide bonds. In this Review, we present the chemical design, advantages and limitations of the disulfide rebridging reagents, while summarizing their relevance for synthetic customization of functional protein bioconjugates, as well as the resultant impact and advancement for biomedical applications.
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Affiliation(s)
- Seah Ling Kuan
- Institute of Organic Chemistry IIIUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
| | - Tao Wang
- Institute of Organic Chemistry IIIUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
- School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu610031P.R. China
| | - Tanja Weil
- Institute of Organic Chemistry IIIUlm UniversityAlbert-Einstein-Allee 1189081UlmGermany
- Max Planck Institute for Polymer ResearchAckermannweg 1055128MainzGermany
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32
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Edson JA, Kwon YJ. Design, challenge, and promise of stimuli-responsive nanoantibiotics. NANO CONVERGENCE 2016; 3:26. [PMID: 28191436 PMCID: PMC5271158 DOI: 10.1186/s40580-016-0085-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Accepted: 09/22/2016] [Indexed: 05/18/2023]
Abstract
Over the past few years, there have been calls for novel antimicrobials to combat the rise of drug-resistant bacteria. While some promising new discoveries have met this call, it is not nearly enough. The major problem is that although these new promising antimicrobials serve as a short-term solution, they lack the potential to provide a long-term solution. The conventional method of creating new antibiotics relies heavily on the discovery of an antimicrobial compound from another microbe. This paradigm of development is flawed due to the fact that microbes can easily transfer a resistant mechanism if faced with an environmental pressure. Furthermore, there has been some evidence to indicate that the environment of the microbe can provide a hint as to their virulence. Because of this, the use of materials with antimicrobial properties has been garnering interest. Nanoantibiotics, (nAbts), provide a new way to circumvent the current paradigm of antimicrobial discovery and presents a novel mechanism of attack not found in microbes yet; which may lead to a longer-term solution against drug-resistance formation. This allows for environment-specific activation and efficacy of the nAbts but may also open up and create new design methods for various applications. These nAbts provide promise, but there is still ample work to be done in their development. This review looks at possible ways of improving and optimizing nAbts by making them stimuli-responsive, then consider the challenges ahead, and industrial applications.Graphical abstractA graphic detailing how the current paradigm of antibiotic discovery can be circumvented by the use of nanoantibiotics.
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Affiliation(s)
- Julius A. Edson
- Department of Chemical Engineering and Material Science, University of California, Irvine, Irvine, CA USA
| | - Young Jik Kwon
- Department of Chemical Engineering and Material Science, University of California, Irvine, Irvine, CA USA
- Department of Pharmaceutical Sciences, University of California, Irvine, Irvine, CA USA
- Department of Biomedical Engineering, University of California, Irvine, Irvine, CA USA
- Department of Molecular Biology and Biochemistry, University of California, Irvine, Irvine, CA USA
- 132 Sprague Hall, Irvine, CA USA
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33
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Li J, Li X, Xu J, Wang Y, Wu L, Wang Y, Wang L, Lee M, Li W. Engineering the Ionic Self-Assembly of Polyoxometalates and Facial-Like Peptides. Chemistry 2016; 22:15751-15759. [DOI: 10.1002/chem.201602449] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Jingfang Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Xiaodong Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Jing Xu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Yang Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Yanqiu Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Liyan Wang
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Myongsoo Lee
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials, Institute of Theoretical Chemistry; Jilin University; Qianjin Avenue 2699 Changchun 130012 P.R. China
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34
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Wang B, Han Y, Lin Q, Liu H, Shen C, Nan K, Chen H. In vitro and in vivo evaluation of xanthan gum-succinic anhydride hydrogels for the ionic strength-sensitive release of antibacterial agents. J Mater Chem B 2016; 4:1853-1861. [PMID: 32263062 DOI: 10.1039/c5tb02046h] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In this work, we report a new approach to prepare high gel performance hydrogels which are used as ionic strength-sensitive drug release systems. Succinic anhydride (SA)-modified xanthan (XG-SA) derivatives were prepared and confirmed by Fourier transform-infrared spectroscopy and proton nuclear magnetic resonance spectroscopy. Rheological measurements showed that the storage moduli (G') and loss moduli (G'') of XG-SA were much higher than native XG suggesting a higher stability of the hydrogels. XG-SA could form stable hydrogels when the content of a dry gel was 1.4 wt%. Drug release studies showed the ionic strength-sensitive and sustained release of gentamicin (GS) for 9 days under aqueous physiological conditions. Biofilm inhibition assay revealed that the XG-SA/GS hydrogels were sufficient to inhibit biofilm formation. The Kirby-Bauer method showed that there was a zone of inhibition at around 8.2 mm indicating the excellent bactericidal function of the hydrogels. Cytocompatibility assessment against human lens epithelial cells revealed that the hydrogels supported cell adhesion, proliferation and migration when the loading dosage of GS was 1 mg g-1. XG-SA/GS hydrogels were compared to native XG-SA in the rabbit subcutaneous S. aureus infection model. XG-SA/GS hydrogels yielded a significantly lower degree of infection than XG-SA hydrogels at day 7. In this way, XG-SA hydrogels are promising drug delivery materials for antibacterial applications.
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Affiliation(s)
- Bailiang Wang
- School of Ophthalmology & Optometry, Eye Hospital, Wenzhou Medical University, Wenzhou, 325027, China.
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35
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Bhardwaj I, Jha D, Admane P, Panda AK, Haridas V. Self-assembling tryptophan-based designer peptides as intracellular delivery vehicles. Bioorg Med Chem Lett 2016; 26:672-676. [DOI: 10.1016/j.bmcl.2015.11.041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/05/2015] [Accepted: 11/13/2015] [Indexed: 02/04/2023]
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36
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Lin JY, Lai PL, Lin YK, Peng S, Lee LY, Chen CN, Chu IM. A poloxamer-polypeptide thermosensitive hydrogel as a cell scaffold and sustained release depot. Polym Chem 2016. [DOI: 10.1039/c5py02067k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Herein, we report the synthesis and characterization of a novel positively charged thermosensitive hydrogel prepared from poloxamer (PLX)-poly(l-alanine-lysine) (Lys-Ala-PLX-Ala-Lys) that demonstrates potential in biomedical applications including tissue engineering and drug delivery.
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Affiliation(s)
- Ji-Yu Lin
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
| | - Po-Liang Lai
- Department of Orthopedic Surgery
- Chang Gung Memorial Hospital
- Taoyuan 333
- Taiwan
- College of Medicine Chang Gung University
| | - Yuan-Kai Lin
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
| | - Sydney Peng
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
| | - Li-Yu Lee
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
| | - Chieh-Nan Chen
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
| | - I-Ming Chu
- Department of Chemical Engineering
- National Tsing Hua University
- Hsinchu, 300
- Taiwan
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37
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Patra P, Rameshbabu AP, Das D, Dhara S, Panda AB, Pal S. Stimuli-responsive, biocompatible hydrogel derived from glycogen and poly(N-isopropylacrylamide) for colon targeted delivery of ornidazole and 5-amino salicylic acid. Polym Chem 2016. [DOI: 10.1039/c6py01128d] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel stimuli-responsive hydrogel (cl-Gly/pNIPAm) has been fabricated using biopolymer glycogen and N-isopropylacrylamide.
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Affiliation(s)
- Priyapratim Patra
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Arun Prabhu Rameshbabu
- Biomaterials and Tissue Engineering Laboratory
- School of Medical Science & Technology
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Dipankar Das
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
| | - Santanu Dhara
- Biomaterials and Tissue Engineering Laboratory
- School of Medical Science & Technology
- Indian Institute of Technology
- Kharagpur-721302
- India
| | - Asit Baran Panda
- Discipline of Inorganic Materials and Catalysis
- Central Salt and Marine Chemicals Research Institute (CSIR)
- Bhavnagar
- India
| | - Sagar Pal
- Polymer Chemistry Laboratory
- Department of Applied Chemistry
- Indian School of Mines
- Dhanbad-826004
- India
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38
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Chang M, Zhang F, Wei T, Zuo T, Guan Y, Lin G, Shao W. Smart linkers in polymer–drug conjugates for tumor-targeted delivery. J Drug Target 2015; 24:475-91. [DOI: 10.3109/1061186x.2015.1108324] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Minglu Chang
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Fang Zhang
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Ting Wei
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Tiantian Zuo
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Yuanyuan Guan
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Guimei Lin
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
| | - Wei Shao
- School of Pharmaceutical Sciences, Shandong University, Jinan, China
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39
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Fang JY, Lin YK, Wang SW, Li YC, Lee RS. Synthesis and characterization of dual-stimuli-responsive micelles based on poly(N-isopropylacrylamide) and polycarbonate with photocleavable moieties. REACT FUNCT POLYM 2015. [DOI: 10.1016/j.reactfunctpolym.2015.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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40
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Wang L, Liu G, Wang X, Hu J, Zhang G, Liu S. Acid-Disintegratable Polymersomes of pH-Responsive Amphiphilic Diblock Copolymers for Intracellular Drug Delivery. Macromolecules 2015. [DOI: 10.1021/acs.macromol.5b01709] [Citation(s) in RCA: 92] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lei Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guhuan Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Xiaorui Wang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jinming Hu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Guoying Zhang
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS Key Laboratory of Soft
Matter Chemistry, Hefei National Laboratory for Physical Sciences
at the Microscale, iChem (Collaborative Innovation Center of Chemistry
for Energy Materials), Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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41
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Cai K, Yen J, Yin Q, Liu Y, Song Z, Lezmi S, Zhang Y, Yang X, Helferich WG, Cheng J. Redox-Responsive Self-Assembled Chain-Shattering Polymeric Therapeutics. Biomater Sci 2015; 3:1061-5. [PMID: 26146551 PMCID: PMC4486357 DOI: 10.1039/c4bm00452c] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We report the design and development of redox-responsive chain-shattering polymeric therapeutics (CSPTs). CSPTs were synthesized by condensation polymerization and further modified with poly(ethylene glycol) (PEG) via "Click" reaction. Size-controlled CSPT nanoparticles (NPs) were formed through nanoprecipitation with high drug loading (up to 18%); the particle size increased in a concentration dependent manner. Drug release from particles was well controlled over 48 h upon redox triggering. The anticancer efficacy of the CSPT NPs was validated both in vitro and in vivo.
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Affiliation(s)
- Kaimin Cai
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Jonathan Yen
- Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Qian Yin
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Yang Liu
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Ziyuan Song
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Stéphane Lezmi
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Yanfeng Zhang
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Xujuan Yang
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - William G Helferich
- Department of Pathobiology, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
| | - Jianjun Cheng
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA ; Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois, 61801, USA
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42
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Tian C, Ling J, Shen YQ. Self-assembly and pH-responsive properties of poly(L-glutamic acid-r-L-leucine) and poly(L-glutamic acid-r-L-leucine)-b-polysarcosine. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-015-1669-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Wong PT, Choi SK. Mechanisms of Drug Release in Nanotherapeutic Delivery Systems. Chem Rev 2015; 115:3388-432. [DOI: 10.1021/cr5004634] [Citation(s) in RCA: 349] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Pamela T. Wong
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
| | - Seok Ki Choi
- Michigan
Nanotechnology Institute
for Medicine and Biological Sciences, Department of Internal Medicine, University of Michigan, Ann Arbor, Michigan 48109, United States
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44
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Singh N, Tena-Solsona M, Miravet JF, Escuder B. Towards Supramolecular Catalysis with Small Self-assembled Peptides. Isr J Chem 2015. [DOI: 10.1002/ijch.201400185] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Tong Z, Solanki A, Hamilos A, Levy O, Wen K, Yin X, Karp JM. Application of biomaterials to advance induced pluripotent stem cell research and therapy. EMBO J 2015; 34:987-1008. [PMID: 25766254 PMCID: PMC4406648 DOI: 10.15252/embj.201490756] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 01/25/2015] [Accepted: 02/17/2015] [Indexed: 12/19/2022] Open
Abstract
Derived from any somatic cell type and possessing unlimited self-renewal and differentiation potential, induced pluripotent stem cells (iPSCs) are poised to revolutionize stem cell biology and regenerative medicine research, bringing unprecedented opportunities for treating debilitating human diseases. To overcome the limitations associated with safety, efficiency, and scalability of traditional iPSC derivation, expansion, and differentiation protocols, biomaterials have recently been considered. Beyond addressing these limitations, the integration of biomaterials with existing iPSC culture platforms could offer additional opportunities to better probe the biology and control the behavior of iPSCs or their progeny in vitro and in vivo. Herein, we discuss the impact of biomaterials on the iPSC field, from derivation to tissue regeneration and modeling. Although still exploratory, we envision the emerging combination of biomaterials and iPSCs will be critical in the successful application of iPSCs and their progeny for research and clinical translation.
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Affiliation(s)
- Zhixiang Tong
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
| | - Aniruddh Solanki
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
| | - Allison Hamilos
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
| | - Oren Levy
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
| | - Kendall Wen
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
| | - Xiaolei Yin
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA
| | - Jeffrey M Karp
- Division of Biomedical Engineering, Department of Medicine, Center for Regenerative Therapeutics, Brigham and Women's Hospital Harvard Medical School, Cambridge, MA, USA Harvard Stem Cell Institute, Cambridge, MA, USA Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA, USA
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46
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Zhang Y, Lundberg P, Diether M, Porsch C, Janson C, Lynd NA, Ducani C, Malkoch M, Malmström E, Hawker CJ, Nyström AM. Histamine-functionalized copolymer micelles as a drug delivery system in 2D and 3D models of breast cancer. J Mater Chem B 2015; 3:2472-2486. [PMID: 26257912 PMCID: PMC4527560 DOI: 10.1039/c4tb02051k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Histamine functionalized block copolymers based on poly(allyl glycidyl ether)-b-poly(ethylene oxide) (PAGE-b-PEO) were prepared with different ratios of histamine and octyl or benzyl groups using UV-initiated thiol-ene click chemistry. At neutral pH, the histamine units are uncharged and hydrophobic, while in acidic environments, such as in the endosome, lysosomes, or extracellular sites of tumours, the histamine groups are positively charged and hydrophilic. pH responsible polymer drug delivery systems is a promising route to site specific delivery of drugs and offers the potential to avoid side effects of systemic treatment. Our detailed in vitro experiments of the efficacy of drug delivery and the intracellular localization characteristics of this library of NPs in 2D and 3D cultures of breast cancer revealed that the 50% histamine-modified polymer loaded with DOX exhibited rapid accumulation in the nucleus of free DOX within 2 h. Confocal studies showed enhanced mitochondrial localization and lysosomal escape when compared to controls. From these combined studies, it was shown that by accurately tuning the structure of the initial block copolymers, the resulting self-assembled NPs can be designed to exploit histamine as an endosomal escape trigger and the octyl/benzyl units give rise to a hydrophobic core resulting in highly efficacious drug delivery systems (DDS) with control over intracellular localization. Optimization and rational control of the intracellular localization of both DDS and the parent drug can give nanomedicines a substantial increase in efficacy and should be explored in future studies.
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Affiliation(s)
- Yuning Zhang
- IMM Institute of Environmental Medicine, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Pontus Lundberg
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
| | - Maren Diether
- IMM Institute of Environmental Medicine, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Christian Porsch
- KTH Royal Institute of Technology, School of Chemical Science and Engineering, Department of Fibre and Polymer Technology, SE-100 44, Stockholm, Sweden
| | - Caroline Janson
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
| | - Nathaniel A. Lynd
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
| | - Cosimo Ducani
- Swedish Medical Nanoscience Center, Department of Neuroscience, Karolinska Institutet, SE-171 77, Stockholm, Sweden
| | - Michael Malkoch
- KTH Royal Institute of Technology, School of Chemical Science and Engineering, Department of Fibre and Polymer Technology, SE-100 44, Stockholm, Sweden
| | - Eva Malmström
- KTH Royal Institute of Technology, School of Chemical Science and Engineering, Department of Fibre and Polymer Technology, SE-100 44, Stockholm, Sweden
| | - Craig J. Hawker
- Materials Research Laboratory, University of California, Santa Barbara, CA 93106, USA
| | - Andreas M. Nyström
- IMM Institute of Environmental Medicine, Karolinska Institutet, SE-171 77, Stockholm, Sweden
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47
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Chen P, Qiu M, Deng C, Meng F, Zhang J, Cheng R, Zhong Z. pH-Responsive chimaeric pepsomes based on asymmetric poly(ethylene glycol)-b-poly(l-leucine)-b-poly(l-glutamic acid) triblock copolymer for efficient loading and active intracellular delivery of doxorubicin hydrochloride. Biomacromolecules 2015; 16:1322-30. [PMID: 25759951 DOI: 10.1021/acs.biomac.5b00113] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
pH-Responsive chimaeric polypeptide-based polymersomes (refer to as pepsomes) were designed and developed from asymmetric poly(ethylene glycol)-b-poly(l-leucine)-b-poly(l-glutamic acid) (PEG-PLeu-PGA, PEG is longer than PGA) triblock copolymers for efficient encapsulation and triggered intracellular delivery of doxorubicin hydrochloride (DOX·HCl). PEG-PLeu-PGA was conveniently prepared by sequential ring-opening polymerization of l-leucine N-carboxyanhydride and γ-benzyl-l-glutamate N-carboxyanhydride using PEG-NH2 as an initiator followed by deprotection. Pepsomes formed from PEG-PLeu-PGA had unimodal distribution and small sizes of 64-71 nm depending on PLeu block lengths. Interestingly, these chimaeric pepsomes while stable at pH 7.4 were quickly disrupted at pH 5.0, likely due to alternation of ionization state of the carboxylic groups in PGA that shifts PGA blocks from hydrophilic and random coil structure into hydrophobic and α-helical structure. DOX·HCl could be actively loaded into the watery core of pepsomes with a high loading efficiency. Remarkably, the in vitro release studies revealed that release of DOX·HCl was highly dependent on pH, in which about 24.0% and 75.7% of drug was released at pH 7.4 and 5.0, respectively, at 37 °C in 24 h. MTT assays demonstrated that DOX·HCl-loaded pepsomes exhibited high antitumor activity, similar to free DOX·HCl in RAW 264.7 cells. Moreover, they were also potent toward drug-resistant MCF-7 cancer cells (MCF-7/ADR). Confocal microscopy studies showed that DOX·HCl-loaded pepsomes delivered and released drug into the cell nuclei of MCF-7/ADR cells in 4 h, while little DOX·HCl fluorescence was observed in MCF-7/ADR cells treated with free drug under otherwise the same conditions. These chimaeric pepsomes with facile synthesis, efficient drug loading, and pH-triggered drug release behavior are an attractive alternative to liposomes for targeted cancer chemotherapy.
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Affiliation(s)
- Peipei Chen
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Min Qiu
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Fenghua Meng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Jian Zhang
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Ru Cheng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, People's Republic of China
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48
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Knipe JM, Chen F, Peppas NA. Enzymatic biodegradation of hydrogels for protein delivery targeted to the small intestine. Biomacromolecules 2015; 16:962-72. [PMID: 25674922 DOI: 10.1021/bm501871a] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Multiresponsive poly(methacrylic acid-co-N-vinylpyrrolidone) hydrogels were synthesized with biodegradable oligopeptide crosslinks. The oligopeptide crosslinks were incorporated using EDC-NHS zero-length links between the carboxylic acid groups of the polymer and free primary amines on the peptide. The reaction of the peptide was confirmed by primary amine assay and IR spectroscopy. The microgels exhibited pH-responsive swelling as well as enzyme-catalyzed degradation targeted by trypsin present in the small intestine, as demonstrated upon incubation with gastrointestinal fluids from rats. Relative turbidity was used to evaluate enzyme-catalyzed degradation as a function of time, and initial trypsin concentration controlled both the degradation mechanism as well as the extent of degradation. Trypsin activity was effectively extinguished by incubation at 70 °C, and both the microgels and degradation products posed no cytotoxic effect toward two different cell lines. The microgels demonstrated pH-dependent loading of the protein insulin for oral delivery to the small intestine.
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Affiliation(s)
- Jennifer M Knipe
- Department of Chemical Engineering, C0400, ‡Department of Biomedical Engineering, C0800, §College of Pharmacy, A1900, and #Institute for Biomaterials, Drug Delivery and Regenerative Medicine, C0800, The University of Texas at Austin , Austin, Texas 78712, United States
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49
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Li X, Han B, Wang X, Gao X, Liang F, Qu X, Yang Z. Chitosan-decorated calcium hydroxide microcapsules with pH-triggered release for endodontic applications. J Mater Chem B 2015; 3:8884-8891. [PMID: 32263482 DOI: 10.1039/c5tb01643f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The treatment of apical periodontitis (AP) remains challenging because traditional root canal therapy (RCT) outcomes are limited by the complexity of the root canal system, drug toxicity, and host immune factors.
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Affiliation(s)
- Xiaoman Li
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- China
| | - Bing Han
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- China
| | - Xiaoyan Wang
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- China
| | - Xuejun Gao
- Department of Cariology and Endodontology
- Peking University School and Hospital of Stomatology
- China
| | - Fuxin Liang
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- China
| | - Xiaozhong Qu
- College of Materials Science and Opto-Electronic Technology
- University of Chinese Academy of Sciences
- China
| | - Zhenzhong Yang
- State Key Laboratory of Polymer Physics and Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- China
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50
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Lee RS, Wang SW, Li YC, Fang JY. Synthesis and characterization of thermo-responsive and photo-cleavable block copolymers as nanocarriers. RSC Adv 2015. [DOI: 10.1039/c4ra13702g] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this study, we synthesized thermo-responsive and photo-cleavable amphiphilic block copolymers containing photodegradable linkers as junction points between hydrophilic and hydrophobic chains.
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Affiliation(s)
- Ren-Shen Lee
- Division of Natural Science
- Center of General Education
- Chang Gung University
- Tao-Yuan 333
- Taiwan
| | - Shiu-Wei Wang
- Division of Natural Science
- Center of General Education
- Chang Gung University
- Tao-Yuan 333
- Taiwan
| | - You-Chen Li
- Division of Natural Science
- Center of General Education
- Chang Gung University
- Tao-Yuan 333
- Taiwan
| | - Jia-You Fang
- Graduate Institute of Natural Products
- Chang Gung University
- Tao-Yuan
- Taiwan
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