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Mañas‐Torres MC, Illescas‐Lopez S, Gavira JA, de Cienfuegos LÁ, Marchesan S. Interactions Between Peptide Assemblies and Proteins for Medicine. Isr J Chem 2022. [DOI: 10.1002/ijch.202200018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mari C. Mañas‐Torres
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
| | - Sara Illescas‐Lopez
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
| | - José A. Gavira
- Laboratorio de Estudios Cristalográficos Instituto Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones Científicas-UGR) Avenida de las Palmeras 4 18100 Armilla, UEQ Granada Spain
| | - Luis Álvarez de Cienfuegos
- Departamento de Química Orgánica, Facultad de Ciencias Unidad de Excelencia Química Aplicada a Biomedicina y Medioambiente (UEQ) Universidad de Granada, (UGR) C. U. Fuentenueva Avda. Severo Ochoa s/n E-18071 Granada
- Instituto de Investigación Biosanitaria ibs Granada Spain
| | - Silvia Marchesan
- Chemical and Pharmaceutical Sciences Department University of Trieste Via L. Giorgieri 1 Trieste 34127 Italy
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2
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Amino acid regulated co-assembly for formation of one-dimensional ordered monocrystal by hydrogen bonding interactions. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.128169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Contreras-Montoya R, Arredondo-Amador M, Escolano-Casado G, Mañas-Torres MC, González M, Conejero-Muriel M, Bhatia V, Díaz-Mochón JJ, Martínez-Augustin O, de Medina F, Lopez-Lopez MT, Conejero-Lara F, Gavira JA, de Cienfuegos LÁ. Insulin Crystals Grown in Short-Peptide Supramolecular Hydrogels Show Enhanced Thermal Stability and Slower Release Profile. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11672-11682. [PMID: 33661596 PMCID: PMC8479728 DOI: 10.1021/acsami.1c00639] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 02/19/2021] [Indexed: 05/08/2023]
Abstract
Protein therapeutics have a major role in medicine in that they are used to treat diverse pathologies. Their three-dimensional structures not only offer higher specificity and lower toxicity than small organic compounds but also make them less stable, limiting their in vivo half-life. Protein analogues obtained by recombinant DNA technology or by chemical modification and/or the use of drug delivery vehicles has been adopted to improve or modulate the in vivo pharmacological activity of proteins. Nevertheless, strategies to improve the shelf-life of protein pharmaceuticals have been less explored, which has challenged the preservation of their activity. Herein, we present a methodology that simultaneously increases the stability of proteins and modulates the release profile, and implement it with human insulin as a proof of concept. Two novel thermally stable insulin composite crystal formulations intended for the therapeutic treatment of diabetes are reported. These composite crystals have been obtained by crystallizing insulin in agarose and fluorenylmethoxycarbonyl-dialanine (Fmoc-AA) hydrogels. This process affords composite crystals, in which hydrogel fibers are occluded. The insulin in both crystalline formulations remains unaltered at 50 °C for 7 days. Differential scanning calorimetry, high-performance liquid chromatography, mass spectrometry, and in vivo studies have shown that insulin does not degrade after the heat treatment. The nature of the hydrogel modifies the physicochemical properties of the crystals. Crystals grown in Fmoc-AA hydrogel are more stable and have a slower dissolution rate than crystals grown in agarose. This methodology paves the way for the development of more stable protein pharmaceuticals overcoming some of the existing limitations.
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Affiliation(s)
- Rafael Contreras-Montoya
- Departamento
de Química Orgánica, Universidad
de Granada, (UGR), C.
U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto
de Investigación Biosanitaria ibs.GRANADA, 18014 Granada, Spain
| | - María Arredondo-Amador
- Departamento
de Farmacología, Centro de Investigación Biomédica
en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), School
of Pharmacy, Instituto de Investigación
Biosanitaria ibs.GRANADA, University of Granada, 18071 Granada, Spain
| | - Guillermo Escolano-Casado
- Laboratorio
de Estudios Cristalográficos, Instituto
Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones
Científicas-UGR), Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Mari C. Mañas-Torres
- Departamento
de Química Orgánica, Universidad
de Granada, (UGR), C.
U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto
de Investigación Biosanitaria ibs.GRANADA, 18014 Granada, Spain
| | - Mercedes González
- Departamento
de Farmacología, Centro de Investigación Biomédica
en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), School
of Pharmacy, Instituto de Investigación
Biosanitaria ibs.GRANADA, University of Granada, 18071 Granada, Spain
| | - Mayte Conejero-Muriel
- Laboratorio
de Estudios Cristalográficos, Instituto
Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones
Científicas-UGR), Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Vaibhav Bhatia
- Lamark
Biotech Pvt. Ltd., VIT-TBI, 632 014 Vellore, Tamil Nadu, India
| | - Juan J. Díaz-Mochón
- Departamento
de Química Farmacéutica y Orgánica, Facultad de Farmacia, UGR, 18011 Granada, Spain
- Centre
for Genomics and Oncological Research, Pfizer/University
of Granada/Andalusian Regional Government, PTS Granada, Avenida de la Ilustración
114, 18016 Granada, Spain
| | - Olga Martínez-Augustin
- Departamento
de Bioquímica y Biología Molecular II, Centro de Investigación
Biomédica en Red de Enfermedades Hepáticas y Digestivas
(CIBERehd), School of Pharmacy, Instituto
de Investigación Biosanitaria ibs.GRANADA, University of Granada, 18071 Granada, Spain
| | - Fermín
Sánchez de Medina
- Departamento
de Farmacología, Centro de Investigación Biomédica
en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), School
of Pharmacy, Instituto de Investigación
Biosanitaria ibs.GRANADA, University of Granada, 18071 Granada, Spain
| | - Modesto T. Lopez-Lopez
- Departamento
de Física Aplicada, Facultad de Ciencias,
UGR, C. U. Fuentenueva,
Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto
de Investigación Biosanitaria ibs.GRANADA, 18014 Granada, Spain
| | - Francisco Conejero-Lara
- Departamento de Química Física, Facultad de Ciencias, UGR, C. U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
| | - José A. Gavira
- Laboratorio
de Estudios Cristalográficos, Instituto
Andaluz de Ciencias de la Tierra (Consejo Superior de Investigaciones
Científicas-UGR), Avenida de las Palmeras 4, Armilla, 18100 Granada, Spain
| | - Luis Álvarez de Cienfuegos
- Departamento
de Química Orgánica, Universidad
de Granada, (UGR), C.
U. Fuentenueva, Avda. Severo Ochoa s/n, E-18071 Granada, Spain
- Instituto
de Investigación Biosanitaria ibs.GRANADA, 18014 Granada, Spain
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Das AK, Gavel PK. Low molecular weight self-assembling peptide-based materials for cell culture, antimicrobial, anti-inflammatory, wound healing, anticancer, drug delivery, bioimaging and 3D bioprinting applications. SOFT MATTER 2020; 16:10065-10095. [PMID: 33073836 DOI: 10.1039/d0sm01136c] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this review, we have focused on the design and development of low molecular weight self-assembling peptide-based materials for various applications including cell proliferation, tissue engineering, antibacterial, antifungal, anti-inflammatory, anticancer, wound healing, drug delivery, bioimaging and 3D bioprinting. The first part of the review describes about stimuli and various noncovalent interactions, which are the key components of various self-assembly processes for the construction of organized structures. Subsequently, the chemical functionalization of the peptides has been discussed, which is required for the designing of self-assembling peptide-based soft materials. Various low molecular weight self-assembling peptides have been discussed to explain the important structural features for the construction of defined functional nanostructures. Finally, we have discussed various examples of low molecular weight self-assembling peptide-based materials for cell culture, antimicrobial, anti-inflammatory, anticancer, wound healing, drug delivery, bioimaging and 3D bioprinting applications.
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Affiliation(s)
- Apurba K Das
- Department of Chemistry, Indian Institute of Technology Indore, Indore 453552, India.
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Das R, Gayakvad B, Shinde SD, Rani J, Jain A, Sahu B. Ultrashort Peptides—A Glimpse into the Structural Modifications and Their Applications as Biomaterials. ACS APPLIED BIO MATERIALS 2020; 3:5474-5499. [DOI: 10.1021/acsabm.0c00544] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Rudradip Das
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Bhavinkumar Gayakvad
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Suchita Dattatray Shinde
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Jyoti Rani
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Alok Jain
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
| | - Bichismita Sahu
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gujarat 380054, India
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West HT, Csizmar CM, Wagner CR. Tunable Supramolecular Assemblies from Amphiphilic Nucleoside Phosphoramidate Nanofibers by Enzyme Activation. Biomacromolecules 2018; 19:2650-2656. [PMID: 29689161 PMCID: PMC6628205 DOI: 10.1021/acs.biomac.8b00254] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Enzymes possess unique qualities that make them ideal regulators of supramolecular assembly. They are uniquely sensitive to biomolecules and biological compartments, catalytic in effecting chemical reactions, and present a biocompatible and degradable platform for assembly regulation. We demonstrate the novel utility of Histidine Triad Nucleotide Binding Protein 1 (HINT1) in regulating supramolecular hydrogel formation. We synthesized nucleoside-phosphoramidate-functionalized self-assembling peptides that we observed to form nanofibers. We found HINT1's catalytic hydrolysis of the nucleoside phosphoramidate moieties within the nanofiber structures to induce nanofiber organization and higher ordered assembly. The role of HINT1 in effecting this structural change was confirmed with experiments utilizing a high-affinity HINT1 inhibitor and catalytically dead HINT1 mutant. In addition, the kinetics and morphology of hydrogel formation were found to be dependent on the structure of the released nucleoside monophosphate. This work highlights the self-assembly of phosphoramidate nanofibers and their higher organization triggered by HINT1 enzymatic activity.
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Affiliation(s)
- Harrison T. West
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Clifford M. Csizmar
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
| | - Carston R. Wagner
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA
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7
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Qi GB, Gao YJ, Wang L, Wang H. Self-Assembled Peptide-Based Nanomaterials for Biomedical Imaging and Therapy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1703444. [PMID: 29460400 DOI: 10.1002/adma.201703444] [Citation(s) in RCA: 291] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/22/2017] [Indexed: 05/22/2023]
Abstract
Peptide-based materials are one of the most important biomaterials, with diverse structures and functionalities. Over the past few decades, a self-assembly strategy is introduced to construct peptide-based nanomaterials, which can form well-controlled superstructures with high stability and multivalent effect. More recently, peptide-based functional biomaterials are widely utilized in clinical applications. However, there is no comprehensive review article that summarizes this growing area, from fundamental research to clinic translation. In this review, the recent progress of peptide-based materials, from molecular building block peptides and self-assembly driving forces, to biomedical and clinical applications is systematically summarized. Ex situ and in situ constructed nanomaterials based on functional peptides are presented. The advantages of intelligent in situ construction of peptide-based nanomaterials in vivo are emphasized, including construction strategy, nanostructure modulation, and biomedical effects. This review highlights the importance of self-assembled peptide nanostructures for nanomedicine and can facilitate further knowledge and understanding of these nanosystems toward clinical translation.
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Affiliation(s)
- Guo-Bin Qi
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing, 100190, China
| | - Yu-Juan Gao
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing, 100190, China
| | - Lei Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing, 100190, China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), No. 11 Beiyitiao, Zhongguancun, Beijing, 100190, China
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8
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Guo Z, Ma W, Gu H, Feng Y, He Z, Chen Q, Mao X, Zhang J, Zheng L. pH-Switchable and self-healable hydrogels based on ketone type acylhydrazone dynamic covalent bonds. SOFT MATTER 2017; 13:7371-7380. [PMID: 28951902 DOI: 10.1039/c7sm00916j] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Stimuli-responsive hydrogels using dynamic covalent bonds (DCBs) as cross-links may exhibit simultaneously the stimuli-responsibility of the physical gels and stability of the chemical gels. We prepared well-defined, ketone-based polymers based on commercially available diacetone acrylamide (DAAM) by a reversible addition-fragmentation chain transfer (RAFT) polymerization technique. The polymers could react with hexanedihydrazide yielding hydrogels. The mechanics, flexible properties and gelator concentration of the hydrogels can be tuned by varying the ratio of DAAM. Gelation time and hydrogel stability were gravely affected by the pH of the surrounding medium. The hydrogels possess self-healing ability without any external stimuli and undergo switchable sol-gel transition by the alternation of pH. In addition, the hydrogels showed pH-responsive controlled release behavior for rhodamine B. These kinds of ketone-type acylhydrazone DCB hydrogels, avoiding the aldehyde component, may ameliorate their biocompatibility and find potential applications in biomedicines, tissue engineering, etc.
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Affiliation(s)
- Zanru Guo
- Department of Polymer Materials and Chemical Engineering, School of Materials Science and Engineering, East China Jiaotong University, Nanchang 330013, P. R. China.
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9
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Zhou J, Li J, Du X, Xu B. Supramolecular biofunctional materials. Biomaterials 2017; 129:1-27. [PMID: 28319779 PMCID: PMC5470592 DOI: 10.1016/j.biomaterials.2017.03.014] [Citation(s) in RCA: 155] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/09/2017] [Accepted: 03/10/2017] [Indexed: 12/27/2022]
Abstract
This review discusses supramolecular biofunctional materials, a novel class of biomaterials formed by small molecules that are held together via noncovalent interactions. The complexity of biology and relevant biomedical problems not only inspire, but also demand effective molecular design for functional materials. Supramolecular biofunctional materials offer (almost) unlimited possibilities and opportunities to address challenging biomedical problems. Rational molecular design of supramolecular biofunctional materials exploit powerful and versatile noncovalent interactions, which offer many advantages, such as responsiveness, reversibility, tunability, biomimicry, modularity, predictability, and, most importantly, adaptiveness. In this review, besides elaborating on the merits of supramolecular biofunctional materials (mainly in the form of hydrogels and/or nanoscale assemblies) resulting from noncovalent interactions, we also discuss the advantages of small peptides as a prevalent molecular platform to generate a wide range of supramolecular biofunctional materials for the applications in drug delivery, tissue engineering, immunology, cancer therapy, fluorescent imaging, and stem cell regulation. This review aims to provide a brief synopsis of recent achievements at the intersection of supramolecular chemistry and biomedical science in hope of contributing to the multidisciplinary research on supramolecular biofunctional materials for a wide range of applications. We envision that supramolecular biofunctional materials will contribute to the development of new therapies that will ultimately lead to a paradigm shift for developing next generation biomaterials for medicine.
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Affiliation(s)
- Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA
| | - Jie Li
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA
| | - Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA.
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Abstract
Self-assembly, the autonomous organization of components to form patterns or structures, is a prevalent process in nature at all scales. Particularly, biological systems offer remarkable examples of diverse structures (as well as building blocks) and processes resulting from self-assembly. The exploration of bioinspired assemblies not only allows for mimicking the structures of living systems, but it also leads to functions for applications in different fields that benefit humans. In the last several decades, efforts on understanding and controlling self-assembly of small molecules have produced a large library of candidates for developing the biomedical applications of assemblies of small molecules. Moreover, recent findings in biology have provided new insights on the assemblies of small molecules to modulate essential cellular processes (such as apoptosis). These observations indicate that the self-assembly of small molecules, as multifaceted entities and processes to interact with multiple proteins, can have profound biological impacts on cells. In this review, we illustrate that the generation of assemblies of small molecules in cell milieu with their interactions with multiple cellular proteins for regulating cellular processes can result in primary phenotypes, thus providing a fundamentally new molecular approach for controlling cell behavior. By discussing the correlation between molecular assemblies in nature and the assemblies of small molecules in cell milieu, illustrating the functions of the assemblies of small molecules, and summarizing some guiding principles, we hope this review will stimulate more molecular scientists to explore the bioinspired self-assembly of small molecules in cell milieu.
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Affiliation(s)
- Huaimin Wang
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA.
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Wang H, Feng Z, Xu B. D-amino acid-containing supramolecular nanofibers for potential cancer therapeutics. Adv Drug Deliv Rev 2017; 110-111:102-111. [PMID: 27102943 PMCID: PMC5071117 DOI: 10.1016/j.addr.2016.04.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2016] [Revised: 03/19/2016] [Accepted: 04/06/2016] [Indexed: 12/30/2022]
Abstract
Nanostructures formed by peptides that self-assemble in water through non-covalent interactions have attracted considerable attention because peptides possess several unique advantages, such as modular design and easiness of synthesis, convenient modification with known functional motifs, good biocompatibility, low immunogenicity and toxicity, inherent biodegradability, and fast responses to a wide range of external stimuli. After about two decades of development, peptide-based supramolecular nanostructures have already shown great potentials in the fields of biomedicine. Among a range of biomedical applications, using such nanostructures for cancer therapy has attracted increased interests since cancer remains the major threat for human health. Comparing with L-peptides, nanostructures containing peptides made of D-amino acid (i.e., D-peptides) bear a unique advantage, biostability (i.e., resistance towards most of endogenous enzymes). The exploration of nanostructures containing D-amino acids, especially their biomedical applications, is still in its infancy. Herein we review the recent progress of D-amino acid-containing supramolecular nanofibers as an emerging class of biomaterials that exhibit unique features for the development of cancer therapeutics. In addition, we give a brief perspective about the challenges and promises in this research direction.
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Affiliation(s)
- Huaimin Wang
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA
| | - Zhaoqianqi Feng
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453, USA.
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Gao Y, Nieuwendaal R, Dimitriadis EK, Hammouda B, Douglas JF, Xu B, Horkay F. Supramolecular Self-assembly of a Model Hydrogelator: Characterization of Fiber Formation and Morphology. Gels 2016; 2:27. [PMID: 28649573 PMCID: PMC5482529 DOI: 10.3390/gels2040027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 09/22/2016] [Indexed: 11/16/2022] Open
Abstract
Hydrogels are of intense recent interest in connection with biomedical applications ranging from 3-D cell cultures and stem cell differentiation to regenerative medicine, controlled drug delivery and tissue engineering. This prototypical form of soft matter has many emerging material science applications outside the medical field. The physical processes underlying this type of solidification are incompletely understood and this limits design efforts aimed at optimizing these materials for applications. We address this general problem by applying multiple techniques (e.g., NMR, dynamic light scattering, small angle neutron scattering, rheological measurements) to the case of a peptide derivative hydrogelator (molecule 1, NapFFKYp) over a broad range of concentration and temperature to characterize both the formation of individual nanofibers and the fiber network. We believe that a better understanding of the hierarchical self-assembly process and control over the final morphology of this kind of material should have broad significance for biological and medicinal applications utilizing hydrogels.
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Affiliation(s)
- Yuan Gao
- Section on Quantitative Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;
| | - Ryan Nieuwendaal
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;
| | - Emilios K. Dimitriadis
- National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD 20892, USA;
| | - Boualem Hammouda
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;
| | - Jack F. Douglas
- Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA;
| | - Bing Xu
- Department of Chemistry, Brandeis University, Waltham, MA 02453, USA;
| | - Ferenc Horkay
- Section on Quantitative Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
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Yeh MY, Huang CT, Lai TS, Chen FY, Chu NT, Tseng DTH, Hung SC, Lin HC. Effect of Peptide Sequences on Supramolecular Interactions of Naphthaleneimide/Tripeptide Conjugates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:7630-8. [PMID: 27385634 DOI: 10.1021/acs.langmuir.6b01809] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
In this study, we reported a significant difference in the supramolecular hydrogelation of newly discovered NI-GFF (NI-Gly-l-Phe-l-Phe) and NI-FFG (NI-l-Phe-l-Phe-Gly) on the basis of their phase diagrams. With a small difference in the peptide chain between NI-GFF and NI-FFG, we observed a significant difference in their self-assembly properties; NI-GFF formed a stable gel at neutral pH, whereas NI-FFG did not, under the same conditions. From spectroscopic and computational studies, intermolecular π-π interactions and extended hydrogen bonding interactions might reinforce the intermolecular interactions of NI-GFF, which may facilitate the formation of the self-assembled nanostructures and the hydrogel. In addition, the aggregation-induced emission (AIE)-active NI-GFF reveals relatively good biocompatibility compared with that of NI-FFG for two commonly used cell lines, suggesting that it is a promising candidate for use as a supramolecular material in biomedical applications. Our results highlight the importance of tripeptide sequences in a self-assembling hydrogel system.
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Affiliation(s)
- Mei-Yu Yeh
- Integrative Stem Cell Center, China Medical University Hospital , Taichung 40447, Taiwan
- Graduate Institute of Basic Medical Science, Graduate Institute of Clinical Medical Science, China Medical University , Taichung 40402, Taiwan
| | - Ching-Ting Huang
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Tsung-Sheng Lai
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Fang-Yi Chen
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Nien-Tzu Chu
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Dion Tzu-Huan Tseng
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
| | - Shih-Chieh Hung
- Integrative Stem Cell Center, China Medical University Hospital , Taichung 40447, Taiwan
- Graduate Institute of Basic Medical Science, Graduate Institute of Clinical Medical Science, China Medical University , Taichung 40402, Taiwan
| | - Hsin-Chieh Lin
- Department of Materials Science and Engineering, National Chiao Tung University , Hsinchu 30010, Taiwan
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Zhou J, Du X, Yamagata N, Xu B. Enzyme-Instructed Self-Assembly of Small D-Peptides as a Multiple-Step Process for Selectively Killing Cancer Cells. J Am Chem Soc 2016; 138:3813-23. [PMID: 26966844 PMCID: PMC4830347 DOI: 10.1021/jacs.5b13541] [Citation(s) in RCA: 192] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
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Selective inhibition of cancer cells
remains a challenge in chemotherapy.
Here we report the molecular and cellular validation of enzyme-instructed
self-assembly (EISA) as a multiple step process for selectively killing
cancer cells that overexpress alkaline phosphatases (ALPs). We design
and synthesize two kinds of d-tetrapeptide containing one
or two phosphotyrosine residues and with the N-terminal capped by
a naphthyl group. Upon enzymatic dephosphorylation, these d-tetrapeptides turn into self-assembling molecules to form nanofibers
in water. Incubating these d-tetrapeptides with several cancer
cell lines and one normal cell line, the unphosphorylated d-tetrapeptides are innocuous to all the cell lines, the mono- and
diphosphorylated d-tetrapeptides selectively inhibit the
cancer cells, but not the normal cell. The monophosphorylated d-tetrapeptides exhibit more potent inhibitory activity than
the diphosphorylated d-tetrapeptides do; the cancer cell
lines express higher level of ALPs are more susceptible to inhibition
by the phosphorylated d-tetrapeptides; the precursors of d-tetrapeptides that possess higher self-assembling abilities
exhibit higher inhibitory activities. These results confirm the important
role of enzymatic reaction and self-assembly. Using uncompetitive
inhibitors of ALPs and fluorescent d-tetrapeptides, we delineate
that the enzyme catalyzed dephosphorylation and the self-assembly
steps, together, result in the localization of the nanofibers of d-tetrapeptides for killing the cancer cells. We find that the
cell death modality likely associates with the cell type and prove
the interactions between nanofibers and the death receptors. This
work illustrates a paradigm-shifting and biomimetic approach and contributes
useful molecular insights for the development of spatiotemporal defined
supramolecular processes/assemblies as potential anticancer therapeutics.
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Affiliation(s)
- Jie Zhou
- Department of Chemistry, Brandeis University , 415 South Street, Waltham, Massachusetts 02453, United States
| | - Xuewen Du
- Department of Chemistry, Brandeis University , 415 South Street, Waltham, Massachusetts 02453, United States
| | - Natsuko Yamagata
- Department of Chemistry, Brandeis University , 415 South Street, Waltham, Massachusetts 02453, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University , 415 South Street, Waltham, Massachusetts 02453, United States
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15
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Zhou J, Du X, Xu B. Prion-like nanofibrils of small molecules (PriSM): A new frontier at the intersection of supramolecular chemistry and cell biology. Prion 2016; 9:110-8. [PMID: 25738892 DOI: 10.1080/19336896.2015.1022021] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Formed by non-covalent interactions and not defined at genetic level, the assemblies of small molecules in biology are complicated and less explored. A common morphology of the supramolecular assemblies of small molecules is nanofibrils, which coincidentally resembles the nanofibrils formed by proteins such as prions. So these supramolecular assemblies are termed as prion-like nanofibrils of small molecules (PriSM). Emerging evidence from several unrelated fields over the past decade implies the significance of PriSM in biology and medicine. This perspective aims to highlight some recent advances of the research on PriSM. This paper starts with description of the intriguing similarities between PriSM and prions, discusses the paradoxical features of PriSM, introduces the methods for elucidating the biological functions of PriSM, illustrates several examples of beneficial aspects of PriSM, and finishes with the promises and current challenges in the research of PriSM. We anticipate that the research of PriSM will contribute to the fundamental understanding at the intersection of supramolecular chemistry and cell biology and ultimately lead to a new paradigm of molecular (or supramolecular) therapeutics for biomedicine.
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Affiliation(s)
- Jie Zhou
- a Department of Chemistry ; Brandeis University ; Waltham , MA USA
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16
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Du X, Zhou J, Shi J, Xu B. Supramolecular Hydrogelators and Hydrogels: From Soft Matter to Molecular Biomaterials. Chem Rev 2015; 115:13165-307. [PMID: 26646318 PMCID: PMC4936198 DOI: 10.1021/acs.chemrev.5b00299] [Citation(s) in RCA: 1278] [Impact Index Per Article: 142.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Indexed: 12/19/2022]
Abstract
In this review we intend to provide a relatively comprehensive summary of the work of supramolecular hydrogelators after 2004 and to put emphasis particularly on the applications of supramolecular hydrogels/hydrogelators as molecular biomaterials. After a brief introduction of methods for generating supramolecular hydrogels, we discuss supramolecular hydrogelators on the basis of their categories, such as small organic molecules, coordination complexes, peptides, nucleobases, and saccharides. Following molecular design, we focus on various potential applications of supramolecular hydrogels as molecular biomaterials, classified by their applications in cell cultures, tissue engineering, cell behavior, imaging, and unique applications of hydrogelators. Particularly, we discuss the applications of supramolecular hydrogelators after they form supramolecular assemblies but prior to reaching the critical gelation concentration because this subject is less explored but may hold equally great promise for helping address fundamental questions about the mechanisms or the consequences of the self-assembly of molecules, including low molecular weight ones. Finally, we provide a perspective on supramolecular hydrogelators. We hope that this review will serve as an updated introduction and reference for researchers who are interested in exploring supramolecular hydrogelators as molecular biomaterials for addressing the societal needs at various frontiers.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
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17
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Wang J, Zheng J, Cai Y, Zheng J, Gao J, Gong Q, Yang Z. Imaging cellular distribution of fluorescent supramolecular nanofibers. Sci China Chem 2015. [DOI: 10.1007/s11426-015-5521-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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18
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Conejero-Muriel M, Gavira JA, Pineda-Molina E, Belsom A, Bradley M, Moral M, García-López Durán JDD, Luque González A, Díaz-Mochón JJ, Contreras-Montoya R, Martínez-Peragón Á, Cuerva JM, Álvarez de Cienfuegos L. Influence of the chirality of short peptide supramolecular hydrogels in protein crystallogenesis. Chem Commun (Camb) 2015; 51:3862-5. [PMID: 25655841 DOI: 10.1039/c4cc09024a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
For the first time the influence of the chirality of the gel fibers in protein crystallogenesis has been studied. Enantiomeric hydrogels 1 and 2 were tested with model proteins lysozyme and glucose isomerase and a formamidase extracted from B. cereus. Crystallization behaviour and crystal quality of these proteins in both hydrogels are presented and compared.
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Affiliation(s)
- Mayte Conejero-Muriel
- Laboratorio de Estudios Cristalográficos, Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR), Av. de las Palmeras 4, 18100 Armilla, Granada, Spain.
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19
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Huang P, Gao Y, Lin J, Hu H, Liao HS, Yan X, Tang Y, Jin A, Song J, Niu G, Zhang G, Horkay F, Chen X. Tumor-Specific Formation of Enzyme-Instructed Supramolecular Self-Assemblies as Cancer Theranostics. ACS NANO 2015; 9:9517-27. [PMID: 26301492 PMCID: PMC5223087 DOI: 10.1021/acsnano.5b03874] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Despite the effort of developing various nanodelivery systems, most of them suffer from undesired high uptakes by the reticuloendothelial system, such as liver and spleen. Herein we develop an endogenous phosphatase-triggered coassembly strategy to form tumor-specific indocyanine green (ICG)-doped nanofibers (5) for cancer theranostics. Based on coordinated intermolecular interactions, 5 significantly altered near-infrared absorbance of ICG, which improves the critical photoacoustic and photothermal properties. The phosphatase-instructed coassembly process, as well as its theranostic capability, was successfully conducted at different levels ranging from in vitro, living cell, tissue mimic, to in vivo. Specifically, the tumor uptake of ICG was markedly increased to 15.05 ± 3.78%ID/g, which was 25-fold higher than that of free ICG (0.59 ± 0.24%ID/g) at 4 h after intravenous injection. The resulting ultrahigh T/N ratios (>15) clearly differentiated tumors from the surrounding normal tissue. Complete tumor elimination with high therapeutic accuracy has been successfully achieved upon laser irradiation (0.8 W/cm(2), 5 min) within 24-48 h postinjection. As the first example, in vivo formation of tumor-specific ICG-doped nanofiber for PTT theranostics owns the immense potential for clinical translation of personalized nanomedicine with targeted drug delivery as well as for cancer theranostics.
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Affiliation(s)
- Peng Huang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Department of Biomedical Engineering, School of Medicine, Shenzhen University, Shenzhen 518060, China
- Address correspondence to , ,
| | - Yuan Gao
- Section on Tissue Biophysics and Biomimetics, Program on Pediatric Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
- Beijing Engineering Research Center for BioNanotechnology and CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Beijing 100190, China
- Address correspondence to , ,
| | - Jing Lin
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Hao Hu
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Hsien-Shun Liao
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Xuefeng Yan
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Yuxia Tang
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Albert Jin
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Jibin Song
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Gang Niu
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Guofeng Zhang
- Laboratory of Cellular Imaging and Macromolecular Biophysics, National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Ferenc Horkay
- Section on Tissue Biophysics and Biomimetics, Program on Pediatric Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Xiaoyuan Chen
- Laboratory of Molecular Imaging and Nanomedicine (LOMIN), National Institute of Biomedical Imaging and Bioengineering (NIBIB), National Institutes of Health, Bethesda, Maryland 20892, United States
- Address correspondence to , ,
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20
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Abstract
Being driven by non-covalent interactions, the formation of functional assemblies (or aggregates) of small molecules at nanoscale is a more common process in water than one would think. While most efforts on self-assembly in cellular environment concentrate on the assemblies of proteins (e.g., microtubules or amyloid fibers), nanoscale assemblies of small molecules are emerging functional entities that exhibit important biological function in cellular environments. This review describes the increasing efforts on the exploration of nanoscale assemblies of small molecules that largely originate from the serendipitous observations in research fields other than nanoscience and technology. Specifically, we describe that nanoscale assemblies of small molecules exhibit unique biological functions in extracellular and intracellular environment, thus inducing various cellular responses, like causing cell death or promoting cell proliferation. We first survey certain common feature of nanoscale molecular assemblies, then discuss several specific examples, such as, nanoscale assemblies of small peptides accumulated in the cells for selectively inhibiting cancer cells via promiscuous interactions with proteins, and nanoscale assemblies of a glycoconjugate for promoting the proliferation of stem cells or for suppressing immune responses. Subsequently, we emphasize the spatiotemporal control of nanoscale assemblies for controlling the cell fate, particularly illustrate a paradigm-shifting approach-enzyme-instructed self-assembly (EISA), that is, the integration of enzymatic reaction and self-assembly-for generating nanoscale assemblies from innocuous monomers for selectively inhibiting cancer cells. Moreover, we introduce a convenient assay for proteomic study of the proteins that interact with nanoscale assemblies of small molecules in cellular environment. Furthermore, we introduce the use of ligand-receptor interaction to catalyze the formation of nanoscale assemblies. By illustrating these experimental strategies for controlling the formation of nanoscale assemblies of small molecules and for identifying their corresponding protein targets, we aim to highlight that, though not being defined at the genetic level, nanoscale assemblies of small molecules are able to perform many critical biological functions. We envision that nanoscale assemblies of small molecules are a new frontier at the intersection of nanoscience and cell biology and biomedicine. In addition, we discuss the challenges and perspectives of relevant potential biomedical applications of nanoscale assemblies of small molecules.
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Affiliation(s)
- Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South St. MS 015, Waltham, MA 02454
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St. MS 015, Waltham, MA 02454
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21
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Zhou J, Xu B. Enzyme-instructed self-assembly: a multistep process for potential cancer therapy. Bioconjug Chem 2015; 26:987-99. [PMID: 25933032 PMCID: PMC4533114 DOI: 10.1021/acs.bioconjchem.5b00196] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Revised: 04/30/2015] [Indexed: 01/01/2023]
Abstract
The central dogma of the action of current anticancer drugs is that the drug tightly binds to its molecular target for inhibition. The reliance on tight ligand-receptor binding, however, is also the major root of drug resistance in cancer therapy. In this article, we highlight enzyme-instructed self-assembly (EISA)-the integration of enzymatic transformation and molecular self-assembly-as a multistep process for the development of cancer therapy. Using apoptosis as an example, we illustrate that the combination of enzymatic transformation and self-assembly, in fact, is an inherent feature of apoptosis. After the introduction of EISA of small molecules in the context of supramolecular hydrogelation, we describe several key studies to underscore the promises of EISA for developing cancer therapy. Particularly, we will highlight that EISA allows one to develop approaches to target "undruggable" targets or "untargetable" features of cancer cells and provides the opportunity for simultaneously interacting with multiple targets. We envision that EISA, used separately or in combination with current anticancer therapeutics, will ultimately lead to a paradigm shift for developing anticancer medicine that inhibit multiple hallmark capabilities of cancer.
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Affiliation(s)
- Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, Massachusetts 02454, United States
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22
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Tsai JLL, Zou T, Liu J, Chen T, Chan AOY, Yang C, Lok CN, Che CM. Luminescent platinum(ii) complexes with self-assembly and anti-cancer properties: hydrogel, pH dependent emission color and sustained-release properties under physiological conditions. Chem Sci 2015; 6:3823-3830. [PMID: 29218152 PMCID: PMC5707448 DOI: 10.1039/c4sc03635b] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 04/13/2015] [Indexed: 12/28/2022] Open
Abstract
Luminescent platinum(ii) complexes show anti-cancer and pH-dependent self-assembly and sustained-release properties under physiological conditions.
Supramolecular interactions are of paramount importance in biology and chemistry, and can be used to develop new vehicles for drug delivery. Recently, there is a surge of interest on self-assembled functional supramolecular structures driven by intermolecular metal–metal interactions in cellular conditions. Herein we report a series of luminescent Pt(ii) complexes [Pt(C^N^Npyr)(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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NR)]+ [HC^N^Npyr = 2-phenyl-6-(1H-pyrazol-3-yl)-pyridine)] containing pincer type ligands having pyrazole moieties. These Pt(ii) complexes exert potent cytotoxicity to a panel of cancer cell lines including primary bladder cancer cells and display strong phosphorescence that is highly sensitive to the local environment. The self-assembly of these complexes is significantly affected by pH of the solution medium. Based on TEM, SEM, ESI-MS, absorption and emission spectroscopy, and fluorescence microscopy together with cell based assays, [Pt(C^N^Npyr)(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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NR)]+ complexes were observed to self-assemble into orange phosphorescent polymeric aggregates driven by intermolecular Pt(ii)–Pt(ii) and ligand–ligand interactions in a low-pH physiological medium. Importantly, the intracellular assembly and dis-assembly of [Pt(C^N^Npyr)(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
NR)]+ are accompanied by change of emission color from orange to green. These [Pt(C^N^Npyr)(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
]]>
NR)]+ complexes accumulated in the lysosomes of cancer cells, increased the lysosomal membrane permeability and induced cell death. One of these platinum(ii) complexes formed hydrogels which displayed pH-responsive and sustained release properties, leading to low-pH-stimulated and time-dependent cytotoxicity towards cancer cells. These hydrogels can function as vehicles to deliver anti-cancer agent cargo, such as the bioactive natural products studied in this work.
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Affiliation(s)
- Johnson Lui-Lui Tsai
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Taotao Zou
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,HKU Shenzhen Institute of Research and Innovation , Shenzhen 518053 , China
| | - Jia Liu
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Tianfeng Chen
- Department of Chemistry , Jinan University , Guangzhou 510632 , China
| | - Anna On-Yee Chan
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Chen Yang
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,HKU Shenzhen Institute of Research and Innovation , Shenzhen 518053 , China
| | - Chun-Nam Lok
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China .
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry , Institute of Molecular Functional Materials , Chemical Biology Centre and Department of Chemistry , The University of Hong Kong , Pokfulam Road , Hong Kong , China . .,HKU Shenzhen Institute of Research and Innovation , Shenzhen 518053 , China
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23
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Yu-Chun L, Shu-Min H, Jui-Wen C, Yu-Hao L, Hsin-Chieh L. Self-Assembled Nanomaterials Based on Perfluorophenyl-Capped Dipeptides. ACTA ACUST UNITED AC 2015. [DOI: 10.7763/ijcea.2015.v6.456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
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24
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Li Y, Sun Y, Qin M, Cao Y, Wang W. Mechanics of single peptide hydrogelator fibrils. NANOSCALE 2015; 7:5638-5642. [PMID: 25760017 DOI: 10.1039/c4nr07657e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The rigidity of peptide fibers is essential for their chemical and biological functions, despite that it remains largely unexplored. Here, we present the first direct measurement of the mechanics of individual fibers in peptide hydrogels by AFM imaging and statistical analysis and find that the intermolecular interactions play a considerable role.
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Affiliation(s)
- Ying Li
- Jiangsu Engineering Technology Research Centre of Environmental Cleaning Materials, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Jiangsu Joint Laboratory of Atmospheric Pollution Control, Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, 219 Ningliu Road, Nanjing, Jiangsu 210044, P.R. China.
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25
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Hsu SM, Chang JW, Wu FY, Lin YC, Lai TS, Cheng H, Lin HC. A supramolecular hydrogel self-assembled from pentafluorobenzyl-dipeptide. RSC Adv 2015. [DOI: 10.1039/c5ra03290c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
We report a new aromatic-capped peptide amphiphile which is able to form a supramolecular hydrogel under neutral pH.
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Affiliation(s)
- Shu-Min Hsu
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Jui-Wen Chang
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Fang-Yi Wu
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Yu-Chun Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Tsung-Sheng Lai
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Hsun Cheng
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Hsin-Chieh Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
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26
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Wu FY, Hsu SM, Cheng H, Hsu LH, Lin HC. The effect of fluorine on supramolecular hydrogelation of 4-fluorobenzyl-capped diphenylalanine. NEW J CHEM 2015. [DOI: 10.1039/c5nj00786k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Due to the replacement of only one hydrogen atom by fluorine, 4-fluorobenzyl-diphenylalanine molecules self-assemble to form a transparent hydrogel.
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Affiliation(s)
- Fang-Yi Wu
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Shu-Min Hsu
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Hsun Cheng
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Ling-Huang Hsu
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
| | - Hsin-Chieh Lin
- Department of Materials Science and Engineering
- National Chiao Tung University
- Hsinchu
- Republic of China
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27
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Okada Y, Hosoya S, Suzuki H, Chiba K. Total synthesis of elastin peptide using high pressure-liquid phase synthesis assisted by a soluble tag strategy. Org Lett 2014; 16:6448-51. [PMID: 25494479 DOI: 10.1021/ol5032798] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A highly aggregating elastin peptide was prepared efficiently using a high pressure-liquid phase synthesis approach assisted by a soluble tag strategy. Two standard syringes were connected to each other to construct a reactor. This simple reactor was used to apply high pressure to the highly viscous reaction mixture thereby maintaining its fluidity. The reactions were completely inhibited due to aggregation when conducted in a standard flask reactor, whereas our high pressure approach accelerated the couplings to realize complete conversion within 5-7 min. All steps were conducted at 0.10 M concentration, affording grams of the desired product.
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Affiliation(s)
- Yohei Okada
- Department of Applied Biological Chemistry, Tokyo University of Agriculture and Technology , 3-5-8 Saiwai-cho, Fuchu, Tokyo 183-8509, Japan
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28
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Mandal SK, Brahmachari S, Das PK. In Situ Synthesised Silver Nanoparticle-InfusedL-Lysine-Based Injectable Hydrogel: Development of a Biocompatible, Antibacterial, Soft Nanocomposite. Chempluschem 2014. [DOI: 10.1002/cplu.201402269] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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29
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Kleinsmann AJ, Weckenmann NM, Nachtsheim BJ. Phosphate-Triggered Self-Assembly ofN-[(Uracil-5-yl)methyl]urea: A Minimalistic Urea-Derived Hydrogelator. Chemistry 2014; 20:9753-61. [DOI: 10.1002/chem.201402916] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Indexed: 11/07/2022]
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30
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Du X, Zhou J, Xu B. Supramolecular hydrogels made of basic biological building blocks. Chem Asian J 2014; 9:1446-72. [PMID: 24623474 PMCID: PMC4024374 DOI: 10.1002/asia.201301693] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Indexed: 12/31/2022]
Abstract
As a consequence of the self-assembly of small organic molecules in water, supramolecular hydrogels are evolving from serendipitous events during organic synthesis to become a new type of materials that hold promise for applications in biomedicine. In this Focus Review, we describe recent advances in the use of basic biological building blocks for creating molecules that act as hydrogelators and the potential applications of the corresponding hydrogels. After introducing the concept of supramolecular hydrogels and defining the scope of this review, we briefly describe the methods for making and characterizing supramolecular hydrogels. We then discuss representative hydrogelators according to the categories of their building blocks, such as amino acids, nucleobases, and saccharides, and highlight the applications of the hydrogels when necessary. Finally, we offer our perspective and outlook on this fast-growing field at the interface of organic chemistry, materials, biology, and medicine. By providing a snapshot for chemists, engineers, and medical scientists, we hope that this Focus Review will contribute to the development of multidisciplinary research on supramolecular hydrogels for a wide range of applications in different fields.
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Affiliation(s)
- Xuewen Du
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA, Fax: (01)781 736 2516
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA, Fax: (01)781 736 2516
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA, Fax: (01)781 736 2516
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Wu D, Zhou J, Shi J, Du X, Xu B. A naphthalene-containing amino acid enables hydrogelation of a conjugate of nucleobase-saccharide-amino acids. Chem Commun (Camb) 2014; 50:1992-4. [PMID: 24412974 PMCID: PMC3974899 DOI: 10.1039/c3cc48946a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report the first example of a hydrogelator made of a conjugate of nucleobase-saccharide-amino acids by incorporating L-3-(2-naphthyl)-alanine to the conjugate, which illustrates a facile and effective method for generating bioactive and functional hydrogelators from the basic biological building blocks.
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Affiliation(s)
- Dongdong Wu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA.
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Li D, Shi Y, Wang L. Mechanical Reinforcement of Molecular Hydrogel by Co-assembly of Short Peptide-based Gelators with Different Aromatic Capping Groups. CHINESE J CHEM 2014. [DOI: 10.1002/cjoc.201300814] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Hsu SM, Lin YC, Chang JW, Liu YH, Lin HC. Intramolecular Interactions of a Phenyl/Perfluorophenyl Pair in the Formation of Supramolecular Nanofibers and Hydrogels. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201307500] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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Hsu SM, Lin YC, Chang JW, Liu YH, Lin HC. Intramolecular Interactions of a Phenyl/Perfluorophenyl Pair in the Formation of Supramolecular Nanofibers and Hydrogels. Angew Chem Int Ed Engl 2014; 53:1921-7. [DOI: 10.1002/anie.201307500] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 10/17/2013] [Indexed: 01/07/2023]
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Babu SS, Praveen VK, Ajayaghosh A. Functional π-gelators and their applications. Chem Rev 2014; 114:1973-2129. [PMID: 24400783 DOI: 10.1021/cr400195e] [Citation(s) in RCA: 1251] [Impact Index Per Article: 125.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sukumaran Santhosh Babu
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Trivandrum 695019, India
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Gao Y, Kuang Y, Du X, Zhou J, Chandran P, Horkay F, Xu B. Imaging self-assembly dependent spatial distribution of small molecules in a cellular environment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:15191-200. [PMID: 24266765 PMCID: PMC3895920 DOI: 10.1021/la403457c] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Self-assembly of small molecules, as a more common phenomenon than one previously thought, can be either beneficial or detrimental to cells. Despite its profound biological implications, how the self-assembly of small molecules behave in a cellular environment is largely unknown and barely explored. This work studies four fluorescent molecules that consist of the same peptidic backbone (e.g., Phe-Phe-Lys) and enzyme trigger (e.g., a phosphotyrosine residue), but bear different fluorophores on the side chain of the lysine residue of the peptidic motif. These molecules, however, exhibit a different ability of self-assembly before and after enzymatic transformation (e.g., dephosphorylation). Fluorescent imaging reveals that self-assembly directly affects the distribution of these small molecules in a cellular environment. Moreover, cell viability tests suggest that the states and the locations of the molecular assemblies in the cellular environment control the phenotypes of the cells. For example, the molecular nanofibers of one of the small molecules apparently stabilize actin filaments and alleviate the insult of an F-actin toxin (e.g., latrunculin A). Combining fluorescent imaging and enzyme-instructed self-assembly of small peptidic molecules, this work demonstrates self-assembly as a key factor for dictating the spatial distribution of small molecules in a cellular environment. In addition, it illustrates a useful approach, based on enzyme-instructed self-assembly of small molecules, to modulate spatiotemporal profiles of small molecules in a cellular environment, which allows the use of the emergent properties of small molecules to control the fate of cells.
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Affiliation(s)
- Yuan Gao
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
- Section on Tissue Biophysics and Biomimetics, Program on Pediatric Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, 13 South Drive, Bethesda, MD 20892, USA
| | - Yi Kuang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Xuewen Du
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Preethi Chandran
- Chemical Engineering Department, Howard University, Washington, DC 20059, USA
| | - Ferenc Horkay
- Section on Tissue Biophysics and Biomimetics, Program on Pediatric Imaging and Tissue Sciences, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, 13 South Drive, Bethesda, MD 20892, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
- Corresponding Author
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Zhou M, Sun Z, Shen C, Li Z, Zhang Y, Yang M. Application of hydrogel prepared from ferrocene functionalized amino acid in the design of novel electrochemical immunosensing platform. Biosens Bioelectron 2013; 49:243-8. [DOI: 10.1016/j.bios.2013.05.036] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2013] [Accepted: 05/23/2013] [Indexed: 01/12/2023]
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Li J, Gao Y, Kuang Y, Shi J, Du X, Zhou J, Wang H, Yang Z, Xu B. Dephosphorylation of D-peptide derivatives to form biofunctional, supramolecular nanofibers/hydrogels and their potential applications for intracellular imaging and intratumoral chemotherapy. J Am Chem Soc 2013; 135:9907-14. [PMID: 23742714 PMCID: PMC3730259 DOI: 10.1021/ja404215g] [Citation(s) in RCA: 203] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
D-Peptides, as the enantiomers of the naturally occurring L-peptides, usually resist endogenous proteases and are presumably insensitive to most enzymes. But, it is unclear whether or how a phosphatase catalyzes the dephosphorylation from D-peptides. In this work, we examine the formation of the nanofibers of D-peptides via enzymatic dephosphorylation. By comparing the enzymatic hydrogelation of L-peptide and D-peptide based hydrogelators, we find that the chirality of the precursors of the hydrogelators affects little on the enzymatic hydrogelation resulted from the removal of the phosphate group from a tyrosine phosphate residue. The attachment of a therapeutic agent (e.g., taxol) or a fluorophore (e.g., 4-nitro-2,1,3-benzoxadiazole) to the D-peptide based hydrogelators affords a new type of biostable or biocompatible hydrogelators, which may find applications in intratumoral chemotherapy or intracellular imaging, respectively. This work, as the first comprehensive and systematic study of the unexpected enzymatic dephosphorylation of D-peptides, illustrates a useful approach to generate supramolecular hydrogels that have both biostability and other desired functions.
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Affiliation(s)
- Jiayang Li
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Yuan Gao
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Yi Kuang
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Junfeng Shi
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Xuewen Du
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Jie Zhou
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Huaimin Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Zhimou Yang
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
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Kuang Y, Xu B. Disruption of the dynamics of microtubules and selective inhibition of glioblastoma cells by nanofibers of small hydrophobic molecules. Angew Chem Int Ed Engl 2013; 52:6944-8. [PMID: 23686848 PMCID: PMC3771361 DOI: 10.1002/anie.201302658] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Yi Kuang
- Department of Chemistry Brandeis University 415 South Street, Waltham, MA 02453
| | - Bing Xu
- Department of Chemistry Brandeis University 415 South Street, Waltham, MA 02453
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Kuang Y, Yuan D, Zhang Y, Kao A, Du X, Xu B. Interactions between cellular proteins and morphologically different nanoscale aggregates of small molecules. RSC Adv 2013; 3:7704-7707. [PMID: 23766892 PMCID: PMC3677794 DOI: 10.1039/c3ra41523f] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Depending on the methods of preparation, amphiphilic small molecules aggregate to form nanostructures with different morphologies that interact with cytosol proteins in a drastically different manner, thus illustrating the first example of morphological dependent protein binding of nanoscale molecular aggregates.
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Affiliation(s)
| | | | | | | | | | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA. Fax: 781-736-2516; Tel: 781-736-5201
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Kuang Y, Xu B. Disruption of the Dynamics of Microtubules and Selective Inhibition of Glioblastoma Cells by Nanofibers of Small Hydrophobic Molecules. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302658] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Zheng W, Gao J, Song L, Chen C, Guan D, Wang Z, Li Z, Kong D, Yang Z. Surface-induced hydrogelation inhibits platelet aggregation. J Am Chem Soc 2012; 135:266-71. [PMID: 23240879 DOI: 10.1021/ja308690y] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We demonstrate that a tripeptide hydrogelator, Nap-FFG, can selectively self-assemble at the surface of platelets, thus inhibiting ADP-, collagen-, thrombin- and arachidonic acid (AA)-induced human platelet aggregations with the IC(50) values of 0.035 (41), 0.14 (162), 0.062 (68), and 0.13 mg/mL (148 μM), respectively. Other tripeptide hydrogelators with chemical structures of Nap-FFX (X = A, K, S, or E) could not or possessed less potencies to inhibit platelet aggregations. We observed higher amounts of Nap-FFG at the platelet surface by the techniques of LC-MS and confocal microscopy. We also observed self-assembled nanofibers around the platelet incubated with the Nap-FFG by cryo-TEM. The ζ potential of Nap-FFG treated platelets was a little bit more negative than that of untreated ones. The amount of Nap-FFG at the surface of NIH 3T3 cells was much less than that of platelets. These observations suggested that Nap-FFG could selectively self-assemble through unknown ligand-receptor interactions and form thin layers of hydrogels at the surface of platelets, thus preventing the aggregation of them. This study not only broadened the application and opened up a new door for biomedical applications of molecular hydrogels but also might provide a novel strategy to counteract infection diseases through selective surface-induced hydrogelations at pathogens, such as bacteria and virus.
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Affiliation(s)
- Wenting Zheng
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300071, PR China
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Li J, Kuang Y, Gao Y, Du X, Shi J, Xu B. D-amino acids boost the selectivity and confer supramolecular hydrogels of a nonsteroidal anti-inflammatory drug (NSAID). J Am Chem Soc 2012; 135:542-5. [PMID: 23136972 DOI: 10.1021/ja310019x] [Citation(s) in RCA: 229] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
As systemically used therapeutics for treating acute or chronic pains or inflammations, nonsteroidal anti-inflammatory drugs (NSAIDs) also associate with the adverse gastrointestinal and renal effects and cardiovascular risks. Thus, it is beneficial to develop topical gels that selectively inhibit cyclooxygenase-2 (COX-2) for the management of local inflammation. In this work, we demonstrate that the covalent conjugation of d-amino acids to naproxen (i.e., a NSAID) not only affords supramolecular hydrogelators for the topical gels but also unexpectedly and significantly elevates the selectivity toward COX-2 about 20× at little expense of the activity of naproxen. This work illustrates a previously unexplored approach that employs d-amino acids for the development of functional molecules that have dual or multiple roles and exceptional biostability, which offers a new class of molecular hydrogels of therapeutic agents.
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Affiliation(s)
- Jiayang Li
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02454, USA
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Yang Z, Kuang Y, Li X, Zhou N, Zhang Y, Xu B. Supramolecular hydrogel of kanamycin selectively sequesters 16S rRNA. Chem Commun (Camb) 2012; 48:9257-9. [PMID: 22875345 PMCID: PMC3472799 DOI: 10.1039/c2cc34935c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
As the first example of hydrogelator derived from aminoglycoside antibiotics, the hydrogel of kanamycin indicates that the hydrogel of aminoglycosides preserve the specific interaction with their macromolecular targets (e.g., 16S rRNA), thus illustrating a simple approach to explore and identify possible biological targets of supramolecular nanofibers/hydrogels.
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Affiliation(s)
- Zhimou Yang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, P. R. China
| | - Yi Kuang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Xinming Li
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Ning Zhou
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Ye Zhang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
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