1
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Paulus J, Sewald N. Small molecule- and peptide-drug conjugates addressing integrins: A story of targeted cancer treatment. J Pept Sci 2024; 30:e3561. [PMID: 38382900 DOI: 10.1002/psc.3561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 02/23/2024]
Abstract
Targeted cancer treatment should avoid side effects and damage to healthy cells commonly encountered during traditional chemotherapy. By combining small molecule or peptidic ligands as homing devices with cytotoxic drugs connected by a cleavable or non-cleavable linker in peptide-drug conjugates (PDCs) or small molecule-drug conjugates (SMDCs), cancer cells and tumours can be selectively targeted. The development of highly affine, selective peptides and small molecules in recent years has allowed PDCs and SMDCs to increasingly compete with antibody-drug conjugates (ADCs). Integrins represent an excellent target for conjugates because they are overexpressed by most cancer cells and because of the broad knowledge about native binding partners as well as the multitude of small-molecule and peptidic ligands that have been developed over the last 30 years. In particular, integrin αVβ3 has been addressed using a variety of different PDCs and SMDCs over the last two decades, following various strategies. This review summarises and describes integrin-addressing PDCs and SMDCs while highlighting points of great interest.
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Affiliation(s)
- Jannik Paulus
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
| | - Norbert Sewald
- Organic and Bioorganic Chemistry, Faculty of Chemistry, Bielefeld University, Bielefeld, Germany
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2
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Wu Z, Boyer C. Near-Infrared Light-Induced Reversible Deactivation Radical Polymerization: Expanding Frontiers in Photopolymerization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304942. [PMID: 37750445 PMCID: PMC10667859 DOI: 10.1002/advs.202304942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/08/2023] [Indexed: 09/27/2023]
Abstract
Photoinduced reversible deactivation radical polymerization (photo-RDRP) or photoinduced controlled/living radical polymerization has emerged as a versatile and powerful technique for preparing functional and advanced polymer materials under mild conditions by harnessing light energy. While UV and visible light (λ = 400-700 nm) are extensively employed in photo-RDRP, the utilization of near-infrared (NIR) wavelengths (λ = 700-2500 nm) beyond the visible region remains relatively unexplored. NIR light possesses unique properties, including enhanced light penetration, reduced light scattering, and low biomolecule absorption, thereby providing opportunities for applying photo-RDRP in the fields of manufacturing and medicine. This comprehensive review categorizes all known NIR light-induced RDRP (NIR-RDRP) systems into four mechanism-based types: mediation by upconversion nanoparticles, mediation by photocatalysts, photothermal conversion, and two-photon absorption. The distinct photoinitiation pathways associated with each mechanism are discussed. Furthermore, this review highlights the diverse applications of NIR-RDRP reported to date, including 3D printing, polymer brush fabrication, drug delivery, nanoparticle synthesis, and hydrogel formation. By presenting these applications, the review underscores the exceptional capabilities of NIR-RDRP and offers guidance for developing high-performance and versatile photopolymerization systems. Exploiting the unique properties of NIR light unlocks new opportunities for synthesizing functional and advanced polymer materials.
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Affiliation(s)
- Zilong Wu
- Cluster for Advanced Macromolecular Design and Australian Centre for NanoMedicineSchool of Chemical EngineeringThe University of New South WalesSydneyNSW2052Australia
| | - Cyrille Boyer
- Cluster for Advanced Macromolecular Design and Australian Centre for NanoMedicineSchool of Chemical EngineeringThe University of New South WalesSydneyNSW2052Australia
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3
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Paulus J, Sewald N. Synthesis and Evaluation of a Non-Peptide Small-Molecule Drug Conjugate Targeting Integrin αVβ3. Front Chem 2022; 10:869639. [PMID: 35480387 PMCID: PMC9035832 DOI: 10.3389/fchem.2022.869639] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 02/28/2022] [Indexed: 01/16/2023] Open
Abstract
An integrin αVβ3-targeting linear RGD mimetic containing a small-molecule drug conjugate (SMDC) was synthesized by combining the antimitotic agent monomethyl auristatin E (MMAE), an enzymatically cleavable Val-Ala-PABC linker with a linear conjugable RGD mimetic. The structure proposal for the conjugable RGD mimetic was suggested upon the DAD mapping analysis of a previously synthesized small-molecule RGD mimetic array based on a tyrosine scaffold. Therefore, a diversifying strategy was developed as well as a novel method for the partial hydrogenation of pyrimidines in the presence of the hydrogenolytically cleavable Cbz group. The small-molecule RGD mimetics were evaluated in an ELISA-like assay, and the structural relationships were analyzed by DAD mapping revealing activity differences induced by structural changes as visualized in dependence on special structural motifs. This provided a lead structure for generation of an SMDC containing the antimitotic drug MMAE. The resulting SMDC containing a linear RGD mimetic was tested in a cell adhesion and an in vitro cell viability assay in comparison to reference SMDCs containing cRGDfK or cRADfK as the homing device. The linear RGD SMDC and the cRGDfK SMDC inhibited adhesion of αVβ3-positive WM115 cells to vitronectin with IC50 values in the low µM range, while no effect was observed for the αVβ3-negative M21-L cell line. The cRADfK SMDC used as a negative control was about 30-fold less active in the cell adhesion assay than the cRGDfK SMDC. Conversely, both the linear RGD SMDC and the cRGDfK SMDC are about 55-fold less cytotoxic than MMAE against the αVβ3-positive WM115 cell line with IC50 values in the nM range, while the cRADfK SMDC is 150-fold less cytotoxic than MMAE. Hence, integrin binding also influences the antiproliferative activity giving a targeting index of 2.8.
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4
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Tang KC, Cao J, Boatner LM, Li L, Farhi J, Houk KN, Spangle J, Backus KM, Raj M. Tunable Amine-Reactive Electrophiles for Selective Profiling of Lysine. Angew Chem Int Ed Engl 2022; 61:e202112107. [PMID: 34762358 PMCID: PMC10111338 DOI: 10.1002/anie.202112107] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/19/2021] [Indexed: 12/26/2022]
Abstract
Proteome profiling by activated esters identified >9000 ligandable lysines but they are limited as covalent inhibitors due to poor hydrolytic stability. Here we report our efforts to design and discover a new series of tunable amine-reactive electrophiles (TAREs) for selective and robust labeling of lysine. The major challenges in developing selective probes for lysine are the high nucleophilicity of cysteines and poor hydrolytic stability. Our work circumvents these challenges by a unique design of the TAREs that form stable adducts with lysine and on reaction with cysteine generate another reactive electrophiles for lysine. We highlight that TAREs exhibit substantially high hydrolytic stability as compared to the activated esters and are non-cytotoxic thus have the potential to act as covalent ligands. We applied these alternative TAREs for the intracellular labeling of proteins in different cell lines, and for the selective identification of lysines in the human proteome on a global scale.
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Affiliation(s)
- Kuei-Chien Tang
- Present address: Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Jian Cao
- Department of Chemistry and Biochemistry, College of Arts and Sciences, UCLA, Los Angeles, CA, 90095, USA
| | - Lisa M Boatner
- Department of Chemistry and Biochemistry, College of Arts and Sciences, UCLA, Los Angeles, CA, 90095, USA
- Present address: Department of Biological Chemistry, David Geffen School of Medicine, UCLA, Los Angeles, CA, 90095, USA
| | - Linwei Li
- Department of Chemistry and Biochemistry, College of Arts and Sciences, UCLA, Los Angeles, CA, 90095, USA
| | - Jonathan Farhi
- Department of Radiation Oncology, Emory University, Atlanta, GA, 30322, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, College of Arts and Sciences, UCLA, Los Angeles, CA, 90095, USA
| | - Jennifer Spangle
- Department of Radiation Oncology, Emory University, Atlanta, GA, 30322, USA
| | - Keriann M Backus
- Department of Chemistry and Biochemistry, College of Arts and Sciences, UCLA, Los Angeles, CA, 90095, USA
- Present address: Department of Biological Chemistry, David Geffen School of Medicine, UCLA, Los Angeles, CA, 90095, USA
| | - Monika Raj
- Present address: Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
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5
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Tang K, Cao J, Boatner LM, Li L, Farhi J, Houk KN, Spangle J, Backus KM, Raj M. Tunable Amine‐Reactive Electrophiles for Selective Profiling of Lysine. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kuei‐Chien Tang
- Present address: Department of Chemistry Emory University Atlanta GA 30322 USA
| | - Jian Cao
- Department of Chemistry and Biochemistry College of Arts and Sciences UCLA Los Angeles CA 90095 USA
| | - Lisa M. Boatner
- Department of Chemistry and Biochemistry College of Arts and Sciences UCLA Los Angeles CA 90095 USA
- Present address: Department of Biological Chemistry David Geffen School of Medicine UCLA Los Angeles CA 90095 USA
| | - Linwei Li
- Department of Chemistry and Biochemistry College of Arts and Sciences UCLA Los Angeles CA 90095 USA
| | - Jonathan Farhi
- Department of Radiation Oncology Emory University Atlanta GA 30322 USA
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry College of Arts and Sciences UCLA Los Angeles CA 90095 USA
| | - Jennifer Spangle
- Department of Radiation Oncology Emory University Atlanta GA 30322 USA
| | - Keriann M. Backus
- Department of Chemistry and Biochemistry College of Arts and Sciences UCLA Los Angeles CA 90095 USA
- Present address: Department of Biological Chemistry David Geffen School of Medicine UCLA Los Angeles CA 90095 USA
| | - Monika Raj
- Present address: Department of Chemistry Emory University Atlanta GA 30322 USA
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6
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Ludwig BS, Kessler H, Kossatz S, Reuning U. RGD-Binding Integrins Revisited: How Recently Discovered Functions and Novel Synthetic Ligands (Re-)Shape an Ever-Evolving Field. Cancers (Basel) 2021; 13:1711. [PMID: 33916607 PMCID: PMC8038522 DOI: 10.3390/cancers13071711] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 12/19/2022] Open
Abstract
Integrins have been extensively investigated as therapeutic targets over the last decades, which has been inspired by their multiple functions in cancer progression, metastasis, and angiogenesis as well as a continuously expanding number of other diseases, e.g., sepsis, fibrosis, and viral infections, possibly also Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2). Although integrin-targeted (cancer) therapy trials did not meet the high expectations yet, integrins are still valid and promising targets due to their elevated expression and surface accessibility on diseased cells. Thus, for the future successful clinical translation of integrin-targeted compounds, revisited and innovative treatment strategies have to be explored based on accumulated knowledge of integrin biology. For this, refined approaches are demanded aiming at alternative and improved preclinical models, optimized selectivity and pharmacological properties of integrin ligands, as well as more sophisticated treatment protocols considering dose fine-tuning of compounds. Moreover, integrin ligands exert high accuracy in disease monitoring as diagnostic molecular imaging tools, enabling patient selection for individualized integrin-targeted therapy. The present review comprehensively analyzes the state-of-the-art knowledge on the roles of RGD-binding integrin subtypes in cancer and non-cancerous diseases and outlines the latest achievements in the design and development of synthetic ligands and their application in biomedical, translational, and molecular imaging approaches. Indeed, substantial progress has already been made, including advanced ligand designs, numerous elaborated pre-clinical and first-in-human studies, while the discovery of novel applications for integrin ligands remains to be explored.
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Affiliation(s)
- Beatrice S. Ludwig
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
| | - Horst Kessler
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Susanne Kossatz
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Ute Reuning
- Clinical Research Unit, Department of Obstetrics and Gynecology, University Hospital Klinikum Rechts der Isar, Technical University Munich, 81675 Munich, Germany
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7
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Ludwig BS, Tomassi S, Di Maro S, Di Leva FS, Benge A, Reichart F, Nieberler M, Kühn FE, Kessler H, Marinelli L, Reuning U, Kossatz S. The organometallic ferrocene exhibits amplified anti-tumor activity by targeted delivery via highly selective ligands to αvβ3, αvβ6, or α5β1 integrins. Biomaterials 2021; 271:120754. [PMID: 33756215 DOI: 10.1016/j.biomaterials.2021.120754] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/17/2021] [Accepted: 03/08/2021] [Indexed: 12/13/2022]
Abstract
High levels of reactive oxygen species (ROS) in tumors have been shown to exert anti-tumor activity, leading to the concept of ROS induction as therapeutic strategy. The organometallic compound ferrocene (Fc) generates ROS through a reversible one-electron oxidation. Incorporation of Fc into a tumor-targeting, bioactive molecule can enhance its therapeutic activity and enable tumor specific delivery. Therefore, we conjugated Fc to five synthetic, Arg-Gly-Asp (RGD)-based integrin binding ligands to enable targeting of the cell adhesion and signaling receptor integrin subtypes αvβ3, α5β1, or αvβ6, which are overexpressed in various, distinct tumors. We designed and synthesized a library of integrin-ligand-ferrocene (ILF) derivatives and showed that ILF conjugates maintained the high integrin affinity and selectivity of their parent ligands. A thorough biological characterization allowed us to identify the two most promising ligands, an αvβ3 (L2b) and an αvβ6 (L3b) targeting ILF, which displayed selective integrin-dependent cell uptake and pronounced ferrocene-mediated anti-tumor effects in vitro, along with increased ROS production and DNA damage. Hence, ILFs are promising candidates for the selective, tumor-targeted delivery of ferrocene to maximize its anti-cancer efficacy and minimize systemic toxicity, thereby improving the therapeutic window of ferrocene compared to currently used non-selective anti-cancer drugs.
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Affiliation(s)
- Beatrice Stefanie Ludwig
- Department of Nuclear Medicine, University Hospital Klinikum rechts der Isar, Technical University Munich, Munich, Germany; Central Institute for Translational Cancer Research (TranslaTUM), Technical University of Munich, Munich, Germany
| | - Stefano Tomassi
- Department of Pharmacy, University of Naples "Federico II", Naples, Italy
| | - Salvatore Di Maro
- Università degli Studi della Campania "Luigi Vanvitelli", Department of Environmental, Biological and Pharmaceutical Sciences and Technologies, Caserta, Italy
| | | | - Anke Benge
- Department of Obstetrics and Gynecology, Clinical Research Unit, University Hospital Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Florian Reichart
- Institute for Advanced Study, Department of Chemistry, Technical University Munich, Garching, Germany
| | - Markus Nieberler
- Department of Oral and Maxillofacial Surgery, University Hospital Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Fritz E Kühn
- Molecular Catalysis, Catalysis Research Center, Technical University Munich, Munich, Germany; Department of Chemistry, Technical University Munich, Munich, Germany
| | - Horst Kessler
- Institute for Advanced Study, Department of Chemistry, Technical University Munich, Garching, Germany
| | - Luciana Marinelli
- Department of Pharmacy, University of Naples "Federico II", Naples, Italy
| | - Ute Reuning
- Department of Obstetrics and Gynecology, Clinical Research Unit, University Hospital Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Susanne Kossatz
- Department of Nuclear Medicine, University Hospital Klinikum rechts der Isar, Technical University Munich, Munich, Germany; Central Institute for Translational Cancer Research (TranslaTUM), Technical University of Munich, Munich, Germany; Department of Chemistry, Technical University Munich, Munich, Germany.
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8
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Santana AG, González CC. Tandem Radical Fragmentation/Cyclization of Guanidinylated Monosaccharides Grants Access to Medium-Sized Polyhydroxylated Heterocycles. Org Lett 2020; 22:8492-8495. [PMID: 33074675 DOI: 10.1021/acs.orglett.0c03091] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The fragmentation of anomeric alkoxyl radicals (ARF) and the subsequent cyclization promoted by hypervalent iodine provide an excellent method for the synthesis of guanidino-sugars. The methodology described herein is one of the few existing general methodologies for the formation of medium-sized exo- and endoguanidine-containing heterocycles presenting a high degree of oxygenation in their structure.
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Affiliation(s)
- Andrés G Santana
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
| | - Concepción C González
- Instituto de Productos Naturales y Agrobiología del C.S.I.C., Avenida Astrofísico Francisco Sánchez 3, 38206 La Laguna, Tenerife, Spain
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9
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Dordoni F, Scarpi D, Bianchini F, Contini A, Occhiato EG. Enantioselective Synthesis of cis
and trans
4-Aminopipecolic Acids as γ-Amino Acids for the Construction of Cyclic RGD-Containing Peptidomimetics Antagonists of α V
β 3
Integrin. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Francesca Dordoni
- Dipartimento di Chimica “U. Schiff”; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto Fiorentino Italy
| | - Dina Scarpi
- Dipartimento di Chimica “U. Schiff”; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto Fiorentino Italy
| | - Francesca Bianchini
- Dipartimento di Scienze Biomediche Sperimentali e Cliniche “Mario Serio”; Università degli Studi di Firenze; Viale Morgagni 50 50134 Firenze Italy
| | - Alessandro Contini
- Dipartimento di Scienze Farmaceutiche; Università degli Studi di Milano; Via Venezian 21 20133 Milano Italy
| | - Ernesto G. Occhiato
- Dipartimento di Chimica “U. Schiff”; Università degli Studi di Firenze; Via della Lastruccia 13 50019 Sesto Fiorentino Italy
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10
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Zheng Y, Leftheris K. Insights into Protein–Ligand Interactions in Integrin Complexes: Advances in Structure Determinations. J Med Chem 2020; 63:5675-5696. [DOI: 10.1021/acs.jmedchem.9b01869] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yajun Zheng
- Pliant Therapeutics, South San Francisco, California 94080, United States
| | - Katerina Leftheris
- Pliant Therapeutics, South San Francisco, California 94080, United States
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11
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Qi XJ, Liu XY, Tang LMY, Li PF, Qiu F, Yang AH. Anti-depressant effect of curcumin-loaded guanidine-chitosan thermo-sensitive hydrogel by nasal delivery. Pharm Dev Technol 2019; 25:316-325. [DOI: 10.1080/10837450.2019.1686524] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Xue-Jie Qi
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiang-Yun Liu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lei-Meng-Yuan Tang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Pan-Feng Li
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Feng Qiu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Ai-Hong Yang
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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12
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Hatley RJD, Barrett TN, Slack RJ, Watson ME, Baillache DJ, Gruszka A, Washio Y, Rowedder JE, Pogány P, Pal S, Macdonald SJF. The Design of Potent, Selective and Drug-Like RGD αvβ1 Small-Molecule Inhibitors Derived from non-RGD α4β1 Antagonists. ChemMedChem 2019; 14:1315-1320. [PMID: 31207080 DOI: 10.1002/cmdc.201900359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Indexed: 11/06/2022]
Abstract
Up to 45 % of deaths in developed nations can be attributed to chronic fibroproliferative diseases, highlighting the need for effective therapies. The RGD (Arg-Gly-Asp) integrin αvβ1 was recently investigated for its role in fibrotic disease, and thus warrants therapeutic targeting. Herein we describe the identification of non-RGD hit small-molecule αvβ1 inhibitors. We show that αvβ1 activity is embedded in a range of published α4β1 (VLA-4) ligands; we also demonstrate how a non-RGD integrin inhibitor (of α4β1 in this case) was converted into a potent non-zwitterionic RGD integrin inhibitor (of αvβ1 in this case). We designed urea ligands with excellent selectivity over α4β1 and the other αv integrins (αvβ3, αvβ5, αvβ6, αvβ8). In silico docking models and density functional theory (DFT) calculations aided the discovery of the lead urea series.
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Affiliation(s)
- Richard J D Hatley
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Tim N Barrett
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Robert J Slack
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Morag E Watson
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Daniel J Baillache
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Anna Gruszka
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Yoshiaki Washio
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - James E Rowedder
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Peter Pogány
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Sandeep Pal
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
| | - Simon J F Macdonald
- GlaxoSmithKline (GSK), Medicines Research Centre, Gunnels Wood Road, Stevenage, SG1 2NY, UK
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13
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Debordeaux F, Chansel-Debordeaux L, Pinaquy JB, Fernandez P, Schulz J. What about αvβ3 integrins in molecular imaging in oncology? Nucl Med Biol 2018; 62-63:31-46. [DOI: 10.1016/j.nucmedbio.2018.04.006] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Revised: 03/19/2018] [Accepted: 04/30/2018] [Indexed: 10/17/2022]
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14
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Hatley RJD, Macdonald SJF, Slack RJ, Le J, Ludbrook SB, Lukey PT. An αv-RGD Integrin Inhibitor Toolbox: Drug Discovery Insight, Challenges and Opportunities. Angew Chem Int Ed Engl 2018; 57:3298-3321. [DOI: 10.1002/anie.201707948] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Richard J. D. Hatley
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
| | - Simon J. F. Macdonald
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
| | - Robert J. Slack
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
| | - Joelle Le
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
| | - Steven B. Ludbrook
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
| | - Pauline T. Lukey
- Fibrosis DPU; Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY UK
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15
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Hatley RJD, Macdonald SJF, Slack RJ, Le J, Ludbrook SB, Lukey PT. Ein Instrumentarium von αv-RGD-Integrin-Inhibitoren: Wirkstoffsuche, Herausforderungen und Möglichkeiten. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201707948] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Richard J. D. Hatley
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
| | - Simon J. F. Macdonald
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
| | - Robert J. Slack
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
| | - Joelle Le
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
| | - Steven B. Ludbrook
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
| | - Pauline T. Lukey
- Fibrosis and Lung Injury DPU, Respiratory Therapeutic Area; GlaxoSmithKline Medicines Research Centre; Gunnels Wood Road Stevenage SG1 2NY Großbritannien
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16
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Xie Z, Deng X, Liu B, Huang S, Ma P, Hou Z, Cheng Z, Lin J, Luan S. Construction of Hierarchical Polymer Brushes on Upconversion Nanoparticles via NIR-Light-Initiated RAFT Polymerization. ACS APPLIED MATERIALS & INTERFACES 2017; 9:30414-30425. [PMID: 28830139 DOI: 10.1021/acsami.7b09124] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Photoinduced reversible addition-fragmentation chain transfer (RAFT) polymerization generally adopts high-energy ultraviolet (UV) or blue light. In combination with photoredox catalyst, the excitation light wavelength was extended to the visible and even near-infrared (NIR) region for photoinduced electron transfer RAFT polymerization. In this report, we introduce for the first time a surface NIR-light-initiated RAFT polymerization on upconversion nanoparticles (UCNPs) without adding any photocatalyst and construct a functional inorganic core/polymer shell nanohybrid for application in cancer theranostics. The multilayer core-shell UCNPs (NaYF4:Yb/Tm@NaYbF4:Gd@NaNdF4:Yb@NaYF4), with surface anchorings of chain transfer agents, can serve as efficient NIR-to-UV light transducers for initiating the RAFT polymerization. A hierarchical double block copolymer brush, consisting of poly(acrylic acid) (PAA) and poly(oligo(ethylene oxide)methacrylate-co-2-(2-methoxy-ethoxy)ethyl methacrylate) (PEG for short), was grafted from the surface in sequence. The targeting arginine-glycine-aspartic (RGD) peptide was modified at the end of the copolymer through the trithiolcarbonate end group. After loading of doxorubicin, the UCNPs@PAA-b-PEG-RGD exhibited an enhanced U87MG cancer cell uptake efficiency and cytotoxicity. Besides, the unique upconversion luminescence of the nanohybrids was used for the autofluoresence-free cell imaging and labeling. Therefore, our strategy verified that UCNPs could efficiently activate RAFT polymerization by NIR photoirradiation and construct the complex nanohybrids, exhibiting prospective biomedical applications due to the low phototoxicity and deep penetration of NIR light.
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Affiliation(s)
- Zhongxi Xie
- University of Science and Technology of China ,No. 96, JinZhai Road, Baohe District, Hefei, Anhui 230026, P. R. China
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17
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Hacker SM, Backus KM, Lazear MR, Forli S, Correia BE, Cravatt BF. Global profiling of lysine reactivity and ligandability in the human proteome. Nat Chem 2017; 9:1181-1190. [PMID: 29168484 DOI: 10.1038/nchem.2826] [Citation(s) in RCA: 292] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 06/07/2017] [Indexed: 12/28/2022]
Abstract
Nucleophilic amino acids make important contributions to protein function, including performing key roles in catalysis and serving as sites for post-translational modification. Electrophilic groups that target amino-acid nucleophiles have been used to create covalent ligands and drugs, but have, so far, been mainly limited to cysteine and serine. Here, we report a chemical proteomic platform for the global and quantitative analysis of lysine residues in native biological systems. We have quantified, in total, more than 9,000 lysines in human cell proteomes and have identified several hundred residues with heightened reactivity that are enriched at protein functional sites and can frequently be targeted by electrophilic small molecules. We have also discovered lysine-reactive fragment electrophiles that inhibit enzymes by active site and allosteric mechanisms, as well as disrupt protein-protein interactions in transcriptional regulatory complexes, emphasizing the broad potential and diverse functional consequences of liganding lysine residues throughout the human proteome.
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Affiliation(s)
- Stephan M Hacker
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California 92307, USA
| | - Keriann M Backus
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California 92307, USA
| | - Michael R Lazear
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California 92307, USA
| | - Stefano Forli
- Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92307, USA
| | - Bruno E Correia
- Laboratory of Protein Design & Immunoengineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Benjamin F Cravatt
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, California 92307, USA
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18
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Kapp TG, Fottner M, Kessler H. Modification and Functionalization of the Guanidine Group by Tailor-made Precursors. J Vis Exp 2017. [PMID: 28518069 DOI: 10.3791/54873] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
The guanidine group is one of the most important pharmacophoric groups in medicinal chemistry. The only amino acid carrying a guanidine group is arginine. In this article, an easy method for the modification of the guanidine group in peptidic ligands is provided, with an example of RGD-binding integrin ligands. It was recently demonstrated that the distinct modification of the guanidine group in these ligands allows for the selective modulation of the subtype (e.g., between the subtypes αv and α5). Moreover, a formerly unknown strategy for the functionalization via the guanidine group was demonstrated, and the synthetic approach is reviewed in this document. The modifications described here involve terminally (Nω) alkylated and acetylated guanidine groups. For the synthesis, tailor-made precursor molecules are synthesized, which are then subjected to a reaction with an orthogonally deprotected amine to transfer the pre-modified guanidine group. For the synthesis of alkylated guanidines, precursors based on N,N'-Di-Boc-1H-pyrazole-1-carboxamidine are used to synthesize acylated compounds, the precursor of choice being a correspondingly acylated derivative of N-Boc-S-methylisothiourea, which can be obtained in one- and two-step reactions.
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Affiliation(s)
- Tobias G Kapp
- Department of Chemistry, Technische Universität München;
| | | | - Horst Kessler
- Department of Chemistry, Technische Universität München
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19
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Buvaylo EA, Kokozay VN, Vassilyeva OY, Skelton BW, Nesterova OV, Pombeiro AJ. Copper(II) complex of the 2-pyridinecarbaldehyde aminoguanidine Schiff base: Crystal structure and catalytic behaviour in mild oxidation of alkanes. INORG CHEM COMMUN 2017. [DOI: 10.1016/j.inoche.2017.03.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Kapp TG, Rechenmacher F, Neubauer S, Maltsev OV, Cavalcanti-Adam EA, Zarka R, Reuning U, Notni J, Wester HJ, Mas-Moruno C, Spatz J, Geiger B, Kessler H. A Comprehensive Evaluation of the Activity and Selectivity Profile of Ligands for RGD-binding Integrins. Sci Rep 2017; 7:39805. [PMID: 28074920 PMCID: PMC5225454 DOI: 10.1038/srep39805] [Citation(s) in RCA: 395] [Impact Index Per Article: 56.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/25/2016] [Indexed: 12/12/2022] Open
Abstract
Integrins, a diverse class of heterodimeric cell surface receptors, are key regulators of cell structure and behaviour, affecting cell morphology, proliferation, survival and differentiation. Consequently, mutations in specific integrins, or their deregulated expression, are associated with a variety of diseases. In the last decades, many integrin-specific ligands have been developed and used for modulation of integrin function in medical as well as biophysical studies. The IC50-values reported for these ligands strongly vary and are measured using different cell-based and cell-free systems. A systematic comparison of these values is of high importance for selecting the optimal ligands for given applications. In this study, we evaluate a wide range of ligands for their binding affinity towards the RGD-binding integrins αvβ3, αvβ5, αvβ6, αvβ8, α5β1, αIIbβ3, using homogenous ELISA-like solid phase binding assay.
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Affiliation(s)
- Tobias G Kapp
- Institute for Advanced Study and Center for Integrated Protein Science, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Florian Rechenmacher
- Institute for Advanced Study and Center for Integrated Protein Science, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Stefanie Neubauer
- Institute for Advanced Study and Center for Integrated Protein Science, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Oleg V Maltsev
- Institute for Advanced Study and Center for Integrated Protein Science, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
| | - Elisabetta A Cavalcanti-Adam
- Max-Planck-Institute for Medical Research, Department of Biointerface Science and Technology, Heidelberg, Postal address: Heisenbergstr. 3, 70 569 Stuttgart, Germany
| | - Revital Zarka
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Ute Reuning
- Clinical Research Unit, Department of Obstetrics &Gynecology, Technische Universität München, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Johannes Notni
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany
| | - Hans-Jürgen Wester
- Pharmaceutical Radiochemistry, Technische Universität München, Munich, Germany
| | - Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering, and Centre for Research in NanoEngineering (CRNE), Technical University of Catalonia, 08028-Barcelona, Spain
| | - Joachim Spatz
- Max-Planck-Institute for Medical Research, Department of Biointerface Science and Technology, Heidelberg, Postal address: Heisenbergstr. 3, 70 569 Stuttgart, Germany
| | - Benjamin Geiger
- Department of Molecular Cell Biology, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science, Department of Chemistry, Technische Universität München, Lichtenbergstr. 4, 85747 Garching, Germany
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21
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Berlinck RGS, Bertonha AF, Takaki M, Rodriguez JPG. The chemistry and biology of guanidine natural products. Nat Prod Rep 2017; 34:1264-1301. [DOI: 10.1039/c7np00037e] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The chemistry and biology of natural guanidines isolated from microbial culture media, from marine invertebrates, as well as from terrestrial plants and animals, are reviewed.
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Affiliation(s)
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Mirelle Takaki
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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22
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Hahn EM, Estrada-Ortiz N, Han J, Ferreira VFC, Kapp TG, Correia JDG, Casini A, Kühn FE. Functionalization of Ruthenium(II) Terpyridine Complexes with Cyclic RGD Peptides To Target Integrin Receptors in Cancer Cells. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201601094] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Eva M. Hahn
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry; Technische Universität München; Lichtenbergstr. 4 85747 Garching bei München Germany
- School of Chemistry; Cardiff University; Park Place CF103AT Cardiff United Kingdom
| | - Natalia Estrada-Ortiz
- Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Jiaying Han
- Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
| | - Vera F. C. Ferreira
- Centro de Ciências e Tecnologias Nucleares; Instituto Superior Técnico; Universidade de Lisboa, CTN; Estrada Nacional 10 (km 139.7) 2695-066 Bobadela LRS Portugal
| | - Tobias G. Kapp
- Institute for Advanced Study; Technische Universität München; Lichtenbergstr. 2a 85748 Garching Germany
| | - João D. G. Correia
- Centro de Ciências e Tecnologias Nucleares; Instituto Superior Técnico; Universidade de Lisboa, CTN; Estrada Nacional 10 (km 139.7) 2695-066 Bobadela LRS Portugal
| | - Angela Casini
- School of Chemistry; Cardiff University; Park Place CF103AT Cardiff United Kingdom
- Groningen Research Institute of Pharmacy; University of Groningen; Antonius Deusinglaan 1 9713 AV Groningen The Netherlands
- Institute for Advanced Study; Technische Universität München; Lichtenbergstr. 2a 85748 Garching Germany
| | - Fritz E. Kühn
- Molecular Catalysis, Catalysis Research Center and Department of Chemistry; Technische Universität München; Lichtenbergstr. 4 85747 Garching bei München Germany
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23
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Virdee S. 2016 EMBO Chemical Biology Conference. Chembiochem 2016; 18:66-71. [PMID: 27862792 DOI: 10.1002/cbic.201600597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Indexed: 11/07/2022]
Abstract
The full breadth of the field: The 2016 EMBO Chemical Biology Conference, covering topics from tool development to biological applications and from computational drug design to synthetic chemistry, took place in Heidelberg from 31st August to 3rd September.
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Affiliation(s)
- Satpal Virdee
- University of Dundee, MRC Protein Phosphorylation and Ubiquitylation Unit, Dow Street, Dundee, DD1 5EH, UK
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24
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- or α5β1-Integrin-Selective Peptidomimetics for Surface Coating. Angew Chem Int Ed Engl 2016; 55:7048-67. [PMID: 27258759 DOI: 10.1002/anie.201509782] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Indexed: 12/21/2022]
Abstract
Engineering biomaterials with integrin-binding activity is a very powerful approach to promote cell adhesion, modulate cell behavior, and induce specific biological responses at the surface level. The aim of this Review is to illustrate the evolution of surface-coating molecules in this field: from peptides and proteins with relatively low integrin-binding activity and receptor selectivity to highly active and selective peptidomimetic ligands. In particular, we will bring into focus the difficult challenge of achieving selectivity between the two closely related integrin subtypes αvβ3 and α5β1. The functionalization of surfaces with such peptidomimetics opens the way for a new generation of highly specific cell-instructive surfaces to dissect the biological role of integrin subtypes and for application in tissue engineering and regenerative medicine.
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Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain.
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering, Universitat Politècnica de Catalunya (UPC), Diagonal 647, 08028, Barcelona, Spain
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Tobias G Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM), Technische Universität München, Lichtenbergstrasse 4, 85748, Garching, Germany.
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25
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Mas-Moruno C, Fraioli R, Rechenmacher F, Neubauer S, Kapp TG, Kessler H. αvβ3- oder α5β1-Integrin-selektive Peptidmimetika für die Oberflächenbeschichtung. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201509782] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Carlos Mas-Moruno
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Roberta Fraioli
- Biomaterials, Biomechanics and Tissue Engineering Group, Department of Materials Science and Metallurgical Engineering and Centre for Research in NanoEngineering; Universitat Politècnica de Catalunya (UPC); Diagonal 647 08028 Barcelona Spanien
| | - Florian Rechenmacher
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Stefanie Neubauer
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Tobias G. Kapp
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
| | - Horst Kessler
- Institute for Advanced Study at the Department Chemie und Center of Integrated Protein Science München (CIPSM); Technische Universität München; Lichtenbergstraße 4 85748 Garching Deutschland
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