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Fang Z, Zhang M, Wang H, Chen J, Yuan H, Wang M, Ye S, Jia YG, Sheong FK, Wang Y, Wang L. Marriage of High-Throughput Gradient Surface Generation With Statistical Learning for the Rational Design of Functionalized Biomaterials. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303253. [PMID: 37795620 DOI: 10.1002/adma.202303253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 08/31/2023] [Indexed: 10/06/2023]
Abstract
Functional biomaterial is already an important aspect in modern therapeutics; yet, the design of novel multi-functional biomaterial is still a challenging task nowadays. When several biofunctional components are present, the complexity that arises from their combinations and interactions will lead to tedious trial-and-error screening. In this work, a novel strategy of biomaterial rational design through the marriage of gradient surface generation with statistical learning is presented. Not only can parameter combinations be screened in a high-throughput fashion, but also the optimal conditions beyond the experimentally tested range can be extrapolated from the models. The power of the strategy is demonstrated in rationally designing an unprecedented ternary functionalized surface for orthopedic implant, with optimal osteogenic, angiogenic, and neurogenic activities, and its optimality and the best osteointegration promotion are confirmed in vitro and in vivo, respectively. The presented strategy is expected to open up new possibilities in the rational design of biomaterials.
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Affiliation(s)
- Zhou Fang
- School of Materials Science & Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Meng Zhang
- School of Materials Science & Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Huaiming Wang
- Department of Colorectal Surgery, The Sixth Affiliated Hospital, Sun Yat-Sen University, Guangzhou, 510655, China
| | - Junjian Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Haipeng Yuan
- Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou, 510006, China
| | - Mengyao Wang
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Silin Ye
- School of Materials Science & Engineering, South China University of Technology, Guangzhou, 510006, China
| | - Yong-Guang Jia
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, 510006, China
| | - Fu Kit Sheong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Yingjun Wang
- Key Laboratory of Biomedical Engineering of Guangdong Province, South China University of Technology, Guangzhou, 510006, China
| | - Lin Wang
- School of Materials Science & Engineering, South China University of Technology, Guangzhou, 510006, China
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2
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Li B, Li Y, Chen S, Wang Y, Zheng Y. VEGF mimetic peptide-conjugated nanoparticles for magnetic resonance imaging and therapy of myocardial infarction. J Control Release 2023; 360:44-56. [PMID: 37330014 DOI: 10.1016/j.jconrel.2023.06.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/19/2023]
Abstract
To reduce the mortality of myocardial infarction (MI), accurate detection of the infarct and appropriate prevention against ischemia/reperfusion (I/R) induced cardiac dysfunction are highly desired. Considering that vascular endothelial growth factor (VEGF) receptors are overexpressed in the infarcted heart and VEGF mimetic peptide QK binds specifically to VEGF receptors and activates vascularization, the PEG-QK-modified, gadolinium-doped carbon dots (GCD-PEG-QK) were formulated. This research aims to investigate the magnetic resonance imaging (MRI) capability of GCD-PEG-QK on myocardial infarct and their therapeutic effect on I/R-induced myocardial injury. These multifunctional nanoparticles exhibited good colloidal stability, excellent fluorescent and magnetic property, and satisfactory biocompatibility. Intravenous injection of GCD-PEG-QK nanoparticles post myocardial I/R displayed accurate MRI of the infarct, enhanced efficacy of QK peptide on pro-angiogenesis, and amelioration of cardiac fibrosis, remodeling and dysfunction, probably via the improvement on QK's in vivo stability and MI-targeting. Collectively, the data suggested that this theranostic nanomedicine can realize precise MRI and effective therapy for acute MI in a non-invasive manner.
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Affiliation(s)
- Bing Li
- Department of Pharmacology, Capital Medical University, Beijing 100069, China
| | - Yingxu Li
- Department of Pharmacology, Capital Medical University, Beijing 100069, China
| | - Shuangling Chen
- Department of Chemical Biology, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Yuji Wang
- Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Capital Medical University, Beijing 100069, China
| | - Yuanyuan Zheng
- Department of Pharmacology, Capital Medical University, Beijing 100069, China.
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3
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Di Stasi R, De Rosa L, D'Andrea LD. Structure-Based Design of Peptides Targeting VEGF/VEGFRs. Pharmaceuticals (Basel) 2023; 16:851. [PMID: 37375798 DOI: 10.3390/ph16060851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/03/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) and its receptors (VEGFRs) play a main role in the regulation of angiogenesis and lymphangiogenesis. Furthermore, they are implicated in the onset of several diseases such as rheumatoid arthritis, degenerative eye conditions, tumor growth, ulcers and ischemia. Therefore, molecules able to target the VEGF and its receptors are of great pharmaceutical interest. Several types of molecules have been reported so far. In this review, we focus on the structure-based design of peptides mimicking VEGF/VEGFR binding epitopes. The binding interface of the complex has been dissected and the different regions challenged for peptide design. All these trials furnished a better understanding of the molecular recognition process and provide us with a wealth of molecules that could be optimized to be exploited for pharmaceutical applications.
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Affiliation(s)
| | - Lucia De Rosa
- Istituto di Biostrutture e Bioimmagini, CNR, 80131 Napoli, Italy
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Chen Z, Wang L, Guo C, Qiu M, Cheng L, Chen K, Qi J, Deng L, He C, Li X, Yan Y. Vascularized polypeptide hydrogel modulates macrophage polarization for wound healing. Acta Biomater 2023; 155:218-234. [PMID: 36396041 DOI: 10.1016/j.actbio.2022.11.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 10/18/2022] [Accepted: 11/01/2022] [Indexed: 11/16/2022]
Abstract
Wound repair involves a sophisticated process that includes angiogenesis, immunoregulation and collagen deposition. However, weak revascularization performance and the lack of biochemical cues to trigger immunomodulatory function currently limit biomaterial applications for skin regeneration and tissue engineering. Herein, we fabricate a new bioactive polypeptide hydrogel (QK-SF) constituted by silk fibroin (SF) and a vascular endothelial growth factor mimetic peptide KLTWQELYQLKYKGI (QK) for tissue regeneration by simultaneously promoting vascularization and macrophage polarization. Our results showed that this QK-SF hydrogel can be prepared via an easy manufacturing process, and exhibited good gel stability and low cytotoxicity to cultured human umbilical vein endothelial cells (HUVECs) via both live/dead and cell counting kit-8 assays. Importantly, this QK-SF hydrogel triggered macrophage polarization from M1 into M2, as exemplified by the enhanced expression of the M2 marker and decreased expression of the M1 marker in RAW264.7 cells. Furthermore, the QK-SF hydrogel showed high capacity for inducing endothelial growth, migration and angiogenesis, which were proved by increased expression of angiogenesis-related genes in HUVECs. Consistent with in vitro findings, in vivo data show that the QK-SF hydrogel promoted M2 polarization, keratinocyte differentiation, and collagen deposition in the mouse skin wound model in immunohistochemistry assay. Furthermore, this QK-SF hydrogel can reduce inflammation, induce angiogenesis and promote wound healing as exemplified by the increased vessel formation and decreased wound area in the mouse skin wound model. Altogether, these results indicate that the bioactive QK-SF hydrogel plays dual functional roles in promoting angiogenesis and immunoregulation for tissue regeneration. STATEMENT OF SIGNIFICANCE: The QK-SF hydrogel plays dual functional roles in promoting angiogenesis and immunoregulation for tissue repair and wound healing. The QK-SF hydrogel can be prepared via an easy manufacturing process, and exhibited good gel stability and low cytotoxicity to cultured HUVECs. The QK-SF hydrogel triggered macrophage polarization from M1 into M2. The QK-SF hydrogel showed high capacity for inducing endothelial growth, migration and angiogenesis. The QK-SF hydrogel promoted M2 polarization, keratinocyte differentiation, and collagen deposition.
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Affiliation(s)
- Zhijie Chen
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Lianlian Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Changjun Guo
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Minglong Qiu
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Liang Cheng
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Kaizhe Chen
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Jin Qi
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Lianfu Deng
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China
| | - Chuan He
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China.
| | - Xinming Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
| | - Yufei Yan
- Department of Orthopaedic Surgery, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, PR China; Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai 200025, PR China.
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Barta P, Kamaraj R, Kucharova M, Novy Z, Petrik M, Bendova K, Hajduch M, Pavek P, Trejtnar F. Preparation, In Vitro Affinity, and In Vivo Biodistribution of Receptor-Specific 68Ga-Labeled Peptides Targeting Vascular Endothelial Growth Factor Receptors. Bioconjug Chem 2022; 33:1825-1836. [PMID: 36197842 DOI: 10.1021/acs.bioconjchem.2c00272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
As angiogenesis plays a key role in tumor growth and metastasis, the angiogenic process has attracted scientific interest as a target for diagnostic and therapeutic agents. Factors influencing angiogenesis include the vascular endothelial growth factor (VEGF) family and the two associated receptor types (VEGFR-1 and VEGFR-2). VEGFR-1/-2 detection and quantification in cancer lesions are essential for tumor process management. As a result of the advantageous pharmacokinetics and image contrast, peptides radiolabeled with PET emitters have become interesting tools for the visualization of VEGFR-1/-2-positive tumors. In this study, we prepared 68Ga-labeled peptides containing 15 (peptide 1) and 23 (peptide 2) amino acids as new PET tracers for tumor angiogenic process imaging. METHODS The peptides were conjugated with NODAGA-tris(t-Bu ester) and subsequently radiolabeled with [68Ga]Ga-chloride. The prepared [68Ga]Ga-NODAGA-peptide 1 and [68Ga]Ga-NODAGA-peptide 2 were tested for radiochemical purity and saline/plasma stability. Consequently, the binding affinity toward VEGFRs was assessed in vitro on human glioblastoma and kidney carcinoma cells. The found peptide receptor affinity was compared with the calculated values in the PROtein binDIng enerGY prediction (PRODIGY) server. Finally, the biodistribution study was performed on BALB/c female mice to reveal the basic pharmacokinetic behavior of radiopeptides. RESULTS The in vitro affinity testing of [68Ga]Ga-NODAGA-peptides 1 and 2 showed retained receptor binding as characterized by equilibrium dissociation constant (KD) values in the range of 0.5-1.2 μM and inhibitory concentration 50% (IC50) values in the range of 3.0-5.6 μM. Better binding properties of peptide 2 to VEGFR-1/-2 were found in the PRODIGY server. The biodistribution study on mice showed remarkable accumulation of both peptides in the kidneys and urinary bladder with a short half-life after intravenous application. The in vitro plasma stability of [68Ga]Ga-NODAGA-peptide 2 was superior to that of [68Ga]Ga-NODAGA-peptide 1. CONCLUSIONS The obtained results demonstrated a high radiolabeling yield with no need for purification and preserved binding potency of 68Ga-labeled peptides 1 and 2 toward VEGFRs in cancer cells. The peptide-receptor protein interaction assessed in protein-peptide docking determined the strongest interaction of peptide 2 with domain 2 of VEGFR-2 in addition to a more acceptable plasma stability (t1/2 = 120 min) than that for peptide 1. We found both radiolabeled peptides very potent in their receptor binding, which makes them suitable imaging agents. The rapid transition of the radiopeptides into the urinary tract indicates suitable pharmacokinetic characteristics.
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Affiliation(s)
- Pavel Barta
- Faculty of Pharmacy in Hradec Kralove, Department of Biophysics and Physical Chemistry, Charles University, Hradec Kralove 500 05, Czech Republic
| | - Rajamanikkam Kamaraj
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacology and Toxicology, Charles University, Hradec Kralove 500 05, Czech Republic
| | - Monika Kucharova
- Faculty of Pharmacy in Hradec Kralove, Department of Biophysics and Physical Chemistry, Charles University, Hradec Kralove 500 05, Czech Republic
| | - Zbynek Novy
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University Olomouc, Olomouc 779 00, Czech Republic
| | - Milos Petrik
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University Olomouc, Olomouc 779 00, Czech Republic
| | - Katerina Bendova
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University Olomouc, Olomouc 779 00, Czech Republic
| | - Marian Hajduch
- Faculty of Medicine and Dentistry, Institute of Molecular and Translational Medicine, Palacky University Olomouc, Olomouc 779 00, Czech Republic
| | - Petr Pavek
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacology and Toxicology, Charles University, Hradec Kralove 500 05, Czech Republic
| | - Frantisek Trejtnar
- Faculty of Pharmacy in Hradec Kralove, Department of Pharmacology and Toxicology, Charles University, Hradec Kralove 500 05, Czech Republic
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6
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Theillet FX, Luchinat E. In-cell NMR: Why and how? PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2022; 132-133:1-112. [PMID: 36496255 DOI: 10.1016/j.pnmrs.2022.04.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 04/19/2022] [Accepted: 04/27/2022] [Indexed: 06/17/2023]
Abstract
NMR spectroscopy has been applied to cells and tissues analysis since its beginnings, as early as 1950. We have attempted to gather here in a didactic fashion the broad diversity of data and ideas that emerged from NMR investigations on living cells. Covering a large proportion of the periodic table, NMR spectroscopy permits scrutiny of a great variety of atomic nuclei in all living organisms non-invasively. It has thus provided quantitative information on cellular atoms and their chemical environment, dynamics, or interactions. We will show that NMR studies have generated valuable knowledge on a vast array of cellular molecules and events, from water, salts, metabolites, cell walls, proteins, nucleic acids, drugs and drug targets, to pH, redox equilibria and chemical reactions. The characterization of such a multitude of objects at the atomic scale has thus shaped our mental representation of cellular life at multiple levels, together with major techniques like mass-spectrometry or microscopies. NMR studies on cells has accompanied the developments of MRI and metabolomics, and various subfields have flourished, coined with appealing names: fluxomics, foodomics, MRI and MRS (i.e. imaging and localized spectroscopy of living tissues, respectively), whole-cell NMR, on-cell ligand-based NMR, systems NMR, cellular structural biology, in-cell NMR… All these have not grown separately, but rather by reinforcing each other like a braided trunk. Hence, we try here to provide an analytical account of a large ensemble of intricately linked approaches, whose integration has been and will be key to their success. We present extensive overviews, firstly on the various types of information provided by NMR in a cellular environment (the "why", oriented towards a broad readership), and secondly on the employed NMR techniques and setups (the "how", where we discuss the past, current and future methods). Each subsection is constructed as a historical anthology, showing how the intrinsic properties of NMR spectroscopy and its developments structured the accessible knowledge on cellular phenomena. Using this systematic approach, we sought i) to make this review accessible to the broadest audience and ii) to highlight some early techniques that may find renewed interest. Finally, we present a brief discussion on what may be potential and desirable developments in the context of integrative studies in biology.
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Affiliation(s)
- Francois-Xavier Theillet
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette, France.
| | - Enrico Luchinat
- Dipartimento di Scienze e Tecnologie Agro-Alimentari, Alma Mater Studiorum - Università di Bologna, Piazza Goidanich 60, 47521 Cesena, Italy; CERM - Magnetic Resonance Center, and Neurofarba Department, Università degli Studi di Firenze, 50019 Sesto Fiorentino, Italy
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7
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Modulation of the 20S Proteasome Activity by Porphyrin Derivatives Is Steered through Their Charge Distribution. Biomolecules 2022; 12:biom12060741. [PMID: 35740865 PMCID: PMC9220251 DOI: 10.3390/biom12060741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/15/2022] [Accepted: 05/20/2022] [Indexed: 11/20/2022] Open
Abstract
Cationic porphyrins exhibit an amazing variety of binding modes and inhibition mechanisms of 20S proteasome. Depending on the spatial distribution of their electrostatic charges, they can occupy different sites on α rings of 20S proteasome by exploiting the structural code responsible for the interaction with regulatory proteins. Indeed, they can act as competitive or allosteric inhibitors by binding at the substrate gate or at the grooves between the α subunits, respectively. Moreover, the substitution of a charged moiety in the peripheral arm with a hydrophobic moiety revealed a “new” 20S functional state with higher substrate affinity and catalytic efficiency. In the present study, we expand our structure–activity relationship (SAR) analysis in order to further explore the potential of this versatile class of 20S modulators. Therefore, we have extended the study to additional macrocyclic compounds, displaying different structural features, comparing their interaction behavior on the 20S proteasome with previously investigated compounds. In particular, in order to evaluate how the introduction of a peptidic chain can affect the affinity and the interacting mechanism of porphyrins, we investigate the MTPyApi, a porphyrin derivatized with an Arg–Pro-rich antimicrobial peptide. Moreover, to unveil the role played by the porphyrin core, this was replaced with a corrole scaffold, a “contracted” version of the tetrapyrrolic ring due to the lack of a methine bridge. The analysis has been undertaken by means of integrated kinetic, Nuclear Magnetic Resonance, and computational studies. Finally, in order to assess a potential pharmacological significance of this type of investigation, a preliminary attempt has been performed to evaluate the biological effect of these molecules on MCF7 breast cancer cells in dark conditions, envisaging that porphyrins may indeed represent a powerful tool for the modulation of cellular proteostasis.
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Abstract
In-cell structural biology aims at extracting structural information about proteins or nucleic acids in their native, cellular environment. This emerging field holds great promise and is already providing new facts and outlooks of interest at both fundamental and applied levels. NMR spectroscopy has important contributions on this stage: It brings information on a broad variety of nuclei at the atomic scale, which ensures its great versatility and uniqueness. Here, we detail the methods, the fundamental knowledge, and the applications in biomedical engineering related to in-cell structural biology by NMR. We finally propose a brief overview of the main other techniques in the field (EPR, smFRET, cryo-ET, etc.) to draw some advisable developments for in-cell NMR. In the era of large-scale screenings and deep learning, both accurate and qualitative experimental evidence are as essential as ever to understand the interior life of cells. In-cell structural biology by NMR spectroscopy can generate such a knowledge, and it does so at the atomic scale. This review is meant to deliver comprehensive but accessible information, with advanced technical details and reflections on the methods, the nature of the results, and the future of the field.
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Affiliation(s)
- Francois-Xavier Theillet
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198 Gif-sur-Yvette, France
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9
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Nair RV, Farrukh A, del Campo A. Light-Regulated Angiogenesis via a Phototriggerable VEGF Peptidomimetic. Adv Healthc Mater 2021; 10:e2100488. [PMID: 34110713 DOI: 10.1002/adhm.202100488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Revised: 05/06/2021] [Indexed: 12/31/2022]
Abstract
The application of growth factor based therapies in regenerative medicine is limited by the high cost, fast degradation kinetics, and the multiple functions of these molecules in the cell, which requires regulated delivery to minimize side effects. Here a photoactivatable peptidomimetic of the vascular endothelial growth factor (VEGF) that allows the light-controlled presentation of angiogenic signals to endothelial cells embedded in hydrogel matrices is presented. A photoresponsive analog of the 15-mer peptidomimetic Ac-KLTWQELYQLKYKGI-NH2 (abbreviated P QK) is prepared by introducing a 3-(4,5-dimethoxy-2-nitrophenyl)-2-butyl (DMNPB) photoremovable protecting group at the Trp4 residue. This modification inhibits the angiogenic potential of the peptide temporally. Light exposure of P QK modified hydrogels provide instructive cues to embedded endothelial cells and promote angiogenesis at the illuminated sites of the 3D culture, with the possibility of spatial control. P QK modified photoresponsive biomaterials offer an attractive approach for the dosed delivery and spatial control of pro-angiogenic factors to support regulated vascular growth by just using light as an external trigger.
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Affiliation(s)
- Roshna V. Nair
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
| | - Aleeza Farrukh
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
| | - Aránzazu del Campo
- INM − Leibniz Institute for New Materials Saarbrücken 66123 Germany
- Chemistry Department Saarland University Saarbrücken 66123 Germany
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10
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Phạm TTT, Rainey JK. On-cell nuclear magnetic resonance spectroscopy to probe cell surface interactions. Biochem Cell Biol 2021; 99:683-692. [PMID: 33945753 DOI: 10.1139/bcb-2021-0052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Nuclear magnetic resonance (NMR) spectroscopy allows determination of atomic-level information about intermolecular interactions, molecular structure, and molecular dynamics in the cellular environment. This may be broadly divided into studies focused on obtaining detailed molecular information in the intracellular context ("in-cell") or those focused on characterizing molecules or events at the cell surface ("on-cell"). In this review, we outline some key NMR techniques applied for on-cell NMR studies through both solution-state and solid-state NMR and survey studies that have used these techniques to uncover key information. We particularly focus on application of on-cell NMR spectroscopy to characterize ligand interactions with cell surface membrane proteins such as G-protein coupled receptors (GPCRs), receptor tyrosine kinases, etc. These techniques allow for quantification of binding affinities, competitive binding assays, delineation of portions of ligands involved in binding, ligand bound-state conformational determination, evaluation of receptor structuring and dynamics, and inference of distance constraints characteristic of the ligand-receptor bound state. Excitingly, it is possible to avoid the barriers of production and purification of membrane proteins while obtaining directly physiologically-relevant information through on-cell NMR. We also provide a briefer survey of the applicability of on-cell NMR approaches to other classes of cell surface molecule.
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Affiliation(s)
- Trần Thanh Tâm Phạm
- Dalhousie University, 3688, Department of Biochemistry & Molecular Biology, Halifax, Nova Scotia, Canada;
| | - Jan K Rainey
- Dalhousie University, 3688, Department of Biochemistry & Molecular Biology, Halifax, Canada;
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11
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Palmioli A, Sperandeo P, Bertuzzi S, Polissi A, Airoldi C. On-cell saturation transfer difference NMR for the identification of FimH ligands and inhibitors. Bioorg Chem 2021; 112:104876. [PMID: 33845337 DOI: 10.1016/j.bioorg.2021.104876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/14/2021] [Accepted: 03/25/2021] [Indexed: 12/23/2022]
Abstract
We describe the development of an on-cell NMR method for the rapid screening of FimH ligands and the structural identification of ligand binding epitopes. FimH is a mannose-binding bacterial adhesin expressed at the apical end of type 1 pili of uropathogenic bacterial strains and responsible for their d-mannose sensitive adhesion to host mammalian epithelial cells. Because of these properties, FimH is a key virulence factor and an attractive therapeutic target for urinary tract infection. We prepared synthetic d-mannose decorated dendrimers, we tested their ability to prevent the FimH-mediated yeast agglutination, and thus we used the compounds showing the best inhibitory activity as models of FimH multivalent ligands to set up our NMR methodology. Our experimental protocol, based on on-cell STD NMR techniques, is a suitable tool for the screening and the epitope mapping of FimH ligands aimed at the development of new antiadhesive and diagnostic tools against urinary tract infection pathogens. Notably, the study is carried out in a physiological environment, i.e. at the surface of living pathogen cells expressing FimH.
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Affiliation(s)
- Alessandro Palmioli
- BioOrg NMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, P.zza della Scienza, 2, 20126 Milan, Italy.
| | - Paola Sperandeo
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Via Balzaretti, 9/11/13, 20133 Milano, Italy
| | - Sara Bertuzzi
- BioOrg NMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, P.zza della Scienza, 2, 20126 Milan, Italy; Chemical Glycobiology Lab, Center for Cooperative Research in Biosciences (CIC-bioGUNE), 48160 Derio, Spain
| | - Alessandra Polissi
- Department of Pharmacological and Biomolecular Sciences, University of Milano, Via Balzaretti, 9/11/13, 20133 Milano, Italy
| | - Cristina Airoldi
- BioOrg NMR Lab, Department of Biotechnology and Biosciences, University of Milano-Bicocca, P.zza della Scienza, 2, 20126 Milan, Italy.
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Barrs RW, Jia J, Ward M, Richards DJ, Yao H, Yost MJ, Mei Y. Engineering a Chemically Defined Hydrogel Bioink for Direct Bioprinting of Microvasculature. Biomacromolecules 2021; 22:275-288. [PMID: 33332959 PMCID: PMC7870577 DOI: 10.1021/acs.biomac.0c00947] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Vascularizing printed tissues is a critical challenge in bioprinting. While protein-based hydrogel bioinks have been successfully used to bioprint microvasculature, their compositions are ill-defined and subject to batch variation. Few studies have focused on engineering proangiogenic bioinks with defined properties to direct endogenous microvascular network formation after printing. Here, a peptide-functionalized alginate hydrogel bioink with defined mechanical, rheological, and biochemical properties is developed for direct bioprinting of microvascularized tissues. An integrin-binding peptide (RGD) and a vascular endothelial growth factor-mimetic peptide with a protease-sensitive linker are conjugated onto a biodegradable alginate to synergistically promote vascular morphogenesis and capillary-scale endothelial tube formation. Partial ionic crosslinking before printing converts the otherwise unprintable hydrogel into a viscoelastic bioink with excellent printability and cytocompatibility. We use the bioink to fabricate a compartmentalized vascularized tissue construct, wherein we observe pericyte-endothelial cell colocalization and angiogenic sprouting across a tissue interface, accompanied by deposition of fibronectin and collagen in vascular and tissue components, respectively. This study provides a tunable and translational "off-the-shelf" hydrogel bioink with defined composition for vascularized bioprinting.
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Affiliation(s)
- Ryan W. Barrs
- Department of Bioengineering, Clemson University, USA
- Department of Surgery, Medical University of South
Carolina, USA
| | - Jia Jia
- Department of Bioengineering, Clemson University, USA
| | - Michael Ward
- Department of Bioengineering, Clemson University, USA
| | | | - Hai Yao
- Department of Bioengineering, Clemson University, USA
| | - Michael J. Yost
- Department of Surgery, Medical University of South
Carolina, USA
- Department of Regenerative Medicine and Cell Biology,
Medical University of South Carolina, USA
| | - Ying Mei
- Department of Bioengineering, Clemson University, USA
- Department of Regenerative Medicine and Cell Biology,
Medical University of South Carolina, USA
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13
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Nielsen JJ, Low SA, Ramseier NT, Hadap RV, Young NA, Wang M, Low PS. Analysis of the bone fracture targeting properties of osteotropic ligands. J Control Release 2021; 329:570-584. [PMID: 33031877 DOI: 10.1016/j.jconrel.2020.09.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 09/21/2020] [Accepted: 09/27/2020] [Indexed: 11/29/2022]
Abstract
PURPOSE Although more than 18,000,000 fractures occur each year in the US, methods to promote fracture healing still rely primarily on fracture stabilization, with use of bone anabolic agents to accelerate fracture repair limited to rare occasions when the agent can be applied to the fracture surface. Because management of broken bones could be improved if bone anabolic agents could be continuously applied to a fracture over the entire course of the healing process, we undertook to identify strategies that would allow selective concentration of bone anabolic agents on a fracture surface following systemic administration. Moreover, because hydroxyapatite is uniquely exposed on a broken bone, we searched for molecules that would bind with high affinity and specificity for hydroxyapatite. We envisioned that by conjugating such osteotropic ligands to a bone anabolic agent, we could acquire the ability to continuously stimulate fracture healing. RESULTS Although bisphosphonates and tetracyclines were capable of localizing small amounts of peptidic payloads to fracture surfaces 2-fold over healthy bone, their specificities and capacities for drug delivery were significantly inferior to subsequent other ligands, and were therefore considered no further. In contrast, short oligopeptides of acidic amino acids were found to localize a peptide payload to a bone fracture 91.9 times more than the control untargeted peptide payload. Furthermore acidic oligopeptides were observed to be capable of targeting all classes of peptides, including hydrophobic, neutral, cationic, anionic, short oligopeptides, and long polypeptides. We further found that highly specific bone fracture targeting of multiple peptidic cargoes can be achieved by subcutaneous injection of the construct. CONCLUSIONS Using similar constructs, we anticipate that healing of bone fractures in humans that have relied on immobilization alone can be greately enhanced by continuous stimulation of bone growth using systemic administration of fracture-targeted bone anabolic agents.
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Affiliation(s)
- Jeffery J Nielsen
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, United States of America
| | - Stewart A Low
- Department of Chemistry, Purdue University, West Lafayette, IN, United States of America
| | - Neal T Ramseier
- Department of Chemistry, Purdue University, West Lafayette, IN, United States of America
| | - Rahul V Hadap
- Department of Chemistry, Purdue University, West Lafayette, IN, United States of America
| | - Nicholas A Young
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, United States of America
| | - Mingding Wang
- Department of Chemistry, Purdue University, West Lafayette, IN, United States of America
| | - Philip S Low
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, IN, United States of America; Department of Chemistry, Purdue University, West Lafayette, IN, United States of America.
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14
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Dmytriyeva O, de Diego Ajenjo A, Lundø K, Hertz H, Rasmussen KK, Christiansen AT, Klingelhofer J, Nielsen AL, Hoeber J, Kozlova E, Woldbye DPD, Pankratova S. Neurotrophic Effects of Vascular Endothelial Growth Factor B and Novel Mimetic Peptides on Neurons from the Central Nervous System. ACS Chem Neurosci 2020; 11:1270-1282. [PMID: 32283014 DOI: 10.1021/acschemneuro.9b00685] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Vascular endothelial growth factor B (VEGFB) is a pleiotropic trophic factor, which in contrast to the closely related VEGFA is known to have a limited effect on angiogenesis. VEGFB improves survival in various tissues including the nervous system, where the effect was observed mainly for peripheral neurons. The neurotrophic effect of VEGFB on central nervous system neurons has been less investigated. Here we demonstrated that VEGFB promotes neurite outgrowth from primary cerebellar granule, hippocampal, and retinal neurons in vitro. VEGFB protected hippocampal and retinal neurons from both oxidative stress and glutamate-induced neuronal death. The VEGF receptor 1 (VEGFR1) is required for VEGFB-induced neurotrophic and neuroprotective effects. Using a structure-based approach, we designed short peptides, termed Vefin1-7, mimicking the binding interface of VEGFB to VEGFR1. Vefins were analyzed for their secondary structure and binding to VEGF receptors and compared with previously described peptides derived from VEGFA, another ligand of VEGFR1. We show that Vefins have neurotrophic and neuroprotective effects on primary hippocampal, cerebellar granule, and retinal neurons in vitro with potencies comparable to VEGFB. Similar to VEGFB, Vefins were not mitogenic for MCF-7 cancer cells. Furthermore, one of the peptides, Vefin7, even dose-dependently inhibited the proliferation of MCF-7 cells in vitro. Unraveling the neurotrophic and neuroprotective potentials of VEGFB, the only nonangiogenic factor of the VEGF family, is promising for the development of neuroprotective peptide-based therapies.
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Affiliation(s)
- Oksana Dmytriyeva
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Laboratory for Molecular Pharmacology, Department of Biomedical Science and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Amaia de Diego Ajenjo
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Kathrine Lundø
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Henrik Hertz
- Laboratory of Neuropsychiatry, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Kim K. Rasmussen
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Anders T. Christiansen
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Jorg Klingelhofer
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Alexander L. Nielsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark
| | - Jan Hoeber
- Department of Neuroscience, Uppsala University, Uppsala 75124, Sweden
| | - Elena Kozlova
- Department of Neuroscience, Uppsala University, Uppsala 75124, Sweden
| | - David P. D. Woldbye
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Stanislava Pankratova
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Research Laboratory for Stereology and Neuroscience, Bispebjerg-Frederiksberg Hospital, University Hospital of Copenhagen, Copenhagen 2200, Denmark
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15
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On-cell saturation transfer difference NMR study of Bombesin binding to GRP receptor. Bioorg Chem 2020; 99:103861. [PMID: 32339813 DOI: 10.1016/j.bioorg.2020.103861] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 04/15/2020] [Accepted: 04/16/2020] [Indexed: 01/15/2023]
Abstract
We report the NMR characterization of the molecular interaction between Gastrin Releasing Peptide Receptor (GRP-R) and its natural ligand bombesin (BN). GRP-R is a transmembrane G-protein coupled receptor promoting the stimulation of cancer cell proliferation; in addition, being overexpressed on the surface of different human cancer cell lines, it is ideal for the development of new strategies for the selective targeted delivery of anticancer drugs and diagnostic devices to tumor cells. However, the design of new GRP-R binders requires structural information on receptor interaction with its natural ligands. The experimental protocol presented herein, based on on-cell STD NMR techniques, is a powerful tool for the screening and the epitope mapping of GRP-R ligands aimed at the development of new anticancer and diagnostic tools. Notably, the study can be carried out in a physiological environment, at the surface of tumoral cells overespressing GRP-R. Moreover, to the best of our knowledge, this is the first example of an NMR experiment able to detect and investigate the structural determinants of BN/GRP-R interaction.
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16
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Pal A, Smith CI, Palade J, Nagaraju S, Alarcon-Benedetto BA, Kilbourne J, Rawls A, Wilson-Rawls J, Vernon BL, Nikkhah M. Poly(N-isopropylacrylamide)-based dual-crosslinking biohybrid injectable hydrogels for vascularization. Acta Biomater 2020; 107:138-151. [PMID: 32126310 DOI: 10.1016/j.actbio.2020.02.041] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 02/20/2020] [Accepted: 02/26/2020] [Indexed: 12/17/2022]
Abstract
Injectable hydrogels provide a powerful and non-invasive approach for numerous applications in cell transplantation, growth factor delivery, tissue regeneration and so forth. The properties of injectable hydrogels should be well-tuned for specific applications, where their overall design should ensure biocompatibility, non-toxicity, robust mechanical properties, and most importantly the ability to promote vascularization and integration with the host tissue/organ. Among these criteria, vascularization remains a key design element in the development of functional therapeutic hydrogels for successful translation into clinical settings. To that end, there is still a critical need for the development of the next generation of injectable hydrogels with precisely tuned biophysical and biochemical properties which could simultaneously promote tissue vascularization. In this work, we developed a temperature responsive, dual-crosslinking, biohybrid hydrogels, modified with a vasculogenic peptide for applications in regenerative medicine, specifically tissue vascularization. The synthesized hydrogels consisted of poly(N-isopropylacrylamide)-based copolymer, functionalized gelation and angiogenic VEGF-mimetic QK peptide with enhanced shear-thinning and injectability properties. QK peptide is a VEGF-mimetic vasculogenic peptide which binds to VEGF receptors and activates intercellular pathway for vascularization. Apart from the presence of QK peptide, the mechanical properties of the hydrogels were precisely tuned by altering the polymer concentration, enabling successful assembly and endothelial cell network formation. Extended in vitro studies demonstrated successful encapsulation and homogeneous distribution of endothelial cells within the three-dimensional (3D) environment of the hydrogel matrix with significantly enhanced vascularization in presence of the QK peptide as early as 3 days of culture. A small, preliminary in vivo study in mice showed a trend of increased blood vessel formation in hydrogels that incorporated the QK peptide. Overall, our study presents the design and characterization of injectable, dual-crosslinking and vasculogenic hydrogels with controlled properties which could be utilized for numerous applications in regenerative medicine, minimally invasive cell and drug delivery as well as fundamental studies on tissue vascularization and angiogenesis. STATEMENT OF SIGNIFICANCE: In this work, we synthesized a new class of temperature responsive, dual-crosslinking, biohybrid injectable hydrogels with enhanced vascularization properties for broad applications in regenerative medicine and minimally invasive cell/drug delivery. The developed hydrogels properly accommodated 3D culture, assembly and network formation of endothelial cells, as evidenced by in vitro and in vivo studies.
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Affiliation(s)
- Amrita Pal
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Cameron I Smith
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Joanna Palade
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | - Supriya Nagaraju
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Byron A Alarcon-Benedetto
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA
| | - Jacquelyn Kilbourne
- Department of Animal Care Technologies, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Alan Rawls
- School of Life Sciences, Arizona State University, Tempe, AZ 85287, USA
| | | | - Brent L Vernon
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA.
| | - Mehdi Nikkhah
- School of Biological and Health Systems Engineering (SBHSE), Arizona State University, Tempe, AZ 85287, USA; Center for Personalized Diagnostics, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA.
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17
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Aor B, Khan I, Glinel K, Jonas AM, Demoustier-Champagne S, Durrieu MC. Microchannel Molding Combined with Layer-by-Layer Approach for the Formation of Three-Dimensional Tube-like Structures by Endothelial Cells. ACS APPLIED BIO MATERIALS 2020; 3:1520-1532. [PMID: 35021643 DOI: 10.1021/acsabm.9b01150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The development of a functional in vitro model for microcirculation is an unresolved challenge, with major impact for the creation and regeneration of organs in the tissue engineering. The absence of prevascularized engineered tissues limits enormously their efficacy and integration. Therefore, in this study, the in vitro formation of tubular-like structures with human umbilical vein endothelial cells (HUVECs) is investigated thanks to three-dimensional polycarbonate (PC) microchannel (μCh) scaffolds, surface biofunctionalized with hyaluronic acid/chitosan (HA/CHI) layer-by-layer (LbL) films grafted with adhesive (RGD) and angiogenic (SVV and QK) peptides, alone and in combination. The importance of this work lies in the formation of capillaries in the order of tens of μm, developing spontaneous microvessels, without the complexity of microfluidic approaches, and in a short time-scale. Ellipsometry, confocal laser scanning microscopy, and fluorospectrometry are used to characterize the biofunctionalized microchannels. PC-μCh scaffolds functionalized with (HA/CHI)12.5 film (PC-LbL) and further grafted with RGD and QK peptides (PC-RGD+QK) or with RGD and SVV peptides (PC-RGD+SVV) are then tested for in vitro blood vessel formation. These assays evidence a rapid formation of tubular-like structures after 2 h of incubation. Moreover, a coculture system involving HUVECs and human pericytes derived from placenta (hPCs-PL) stabilizes the tubes for a longer time.
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Affiliation(s)
- Bruno Aor
- Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Université de Bordeaux, Pessac 33600, France.,CNRS, CBMN UMR5248, Pessac 33600, France.,Bordeaux INP, CBMN UMR5248, Pessac 33600, France.,Institute of Condensed Matter and Nanosciences- Bio & Soft Matter, Université Catholique de Louvain, Croix du Sud 1, Box L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Irfan Khan
- Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Université de Bordeaux, Pessac 33600, France.,CNRS, CBMN UMR5248, Pessac 33600, France.,Bordeaux INP, CBMN UMR5248, Pessac 33600, France.,Dr. Panjwani Center for Molecular Medicine and Drug Research, University of Karachi, Karachi 75270, Pakistan
| | - Karine Glinel
- Institute of Condensed Matter and Nanosciences- Bio & Soft Matter, Université Catholique de Louvain, Croix du Sud 1, Box L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Alain M Jonas
- Institute of Condensed Matter and Nanosciences- Bio & Soft Matter, Université Catholique de Louvain, Croix du Sud 1, Box L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Sophie Demoustier-Champagne
- Institute of Condensed Matter and Nanosciences- Bio & Soft Matter, Université Catholique de Louvain, Croix du Sud 1, Box L7.04.02, 1348 Louvain-la-Neuve, Belgium
| | - Marie-Christine Durrieu
- Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Université de Bordeaux, Pessac 33600, France.,CNRS, CBMN UMR5248, Pessac 33600, France
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18
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De Luca S, Verdoliva V, Saviano M, Fattorusso R, Diana D. SPR and NMR characterization of the molecular interaction between A9 peptide and a model system of HER2 receptor: A fragment approach for selecting peptide structures specific for their target. J Pept Sci 2019; 26:e3231. [PMID: 31749266 DOI: 10.1002/psc.3231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Revised: 09/30/2019] [Accepted: 10/22/2019] [Indexed: 01/01/2023]
Abstract
The binding process of A9 peptide toward HER2-DIVMP, a synthetic model of the receptor domain IV, was studied by using the surface plasmon resonance (SPR) technique, with the aim of validating it as a fast and reliable screening method for selecting peptide ligands specifically targeting a domain of their target. To investigate the structural basis of A9 binding to the model of HER2-DIVMP, multiple ligand-based nuclear magnetic resonance (NMR) methods were applied. The use of saturation transfer difference (STD) and WaterLOGSY NMR experiments identified key residues in the peptide for the receptor binding. Moreover, the bound conformation of the A9 peptide was obtained using transferred nuclear Overhauser effect spectroscopy (trNOESY) experiments. The NMR data revealed an extended binding surface that confirms an in silico model previously reported. These structural findings could provide good starting points for future lead structures optimization specific for the receptor target.
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Affiliation(s)
- Stefania De Luca
- Institute of Biostructures and Bioimaging, National Research Council, 80134, Naples, Italy
| | - Valentina Verdoliva
- Institute of Biostructures and Bioimaging, National Research Council, 80134, Naples, Italy
| | - Michele Saviano
- Institute of Crystallography, National Research Council, 70126, Bari, Italy
| | - Roberto Fattorusso
- Department of Environmental, Biological and Pharmaceutical Science and Technology, University of Campania Luigi Vanvitelli, 81100, Caserta, Italy
| | - Donatella Diana
- Institute of Biostructures and Bioimaging, National Research Council, 80134, Naples, Italy
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19
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De Rosa L, Di Stasi R, Longhitano L, D'Andrea LD. Labeling of VEGFR1D2 through oxime ligation. Bioorg Chem 2019; 91:103160. [PMID: 31398600 DOI: 10.1016/j.bioorg.2019.103160] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/25/2019] [Accepted: 07/26/2019] [Indexed: 02/06/2023]
Abstract
We reported an useful protocol for the labeling of the second domain of the Vascular Endothelial Growth Factor Receptor 1 (VEGFR1D2), a small protein ligand able to bind VEGF, the main regulator of angiogenesis. We developed a bioconjugation strategy based on the use of oxime-ligation reaction conjugating an aldehyde derivative of the VEGFR1D2 to a molecular probe harboring an alkoxyamine functional group. We applied the synthetic protocol to prepare a biotinylated conjugate of VEGFR1D2 and we demonstrate that the bioconjugate retains its ability to specifically bind its natural ligand, VEGF, with high affinity. The biotinylated VEGFR1D2 could be useful to detect and quantify VEGF for diagnostic purposes as well as a tool for the screening of new molecules targeting VEGFRs for therapeutic applications. The labeling protocol is versatile and can be extended to different molecular probes, such as fluorophores, chelators or multimeric scaffolds, affording a biomedical platform for VEGF targeting.
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Affiliation(s)
- Lucia De Rosa
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Rossella Di Stasi
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Laura Longhitano
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Luca Domenico D'Andrea
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Mezzocannone 16, 80134 Napoli, Italy; Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, Via Nizza 52, 10126 Torino, Italy.
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20
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Structural studies of the binding of an antagonistic cyclic peptide to the VEGFR1 domain 2. Eur J Med Chem 2019; 169:65-75. [DOI: 10.1016/j.ejmech.2019.02.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 12/17/2022]
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21
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De Rosa L, Di Stasi R, D'Andrea LD. Pro-angiogenic peptides in biomedicine. Arch Biochem Biophys 2018; 660:72-86. [DOI: 10.1016/j.abb.2018.10.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/11/2018] [Accepted: 10/13/2018] [Indexed: 12/12/2022]
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