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Huang Y, Wang J, Guo Y, Shen L, Li Y. Fibrinogen binding to activated platelets and its biomimetic thrombus-targeted thrombolytic strategies. Int J Biol Macromol 2024; 274:133286. [PMID: 38908635 DOI: 10.1016/j.ijbiomac.2024.133286] [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: 11/24/2023] [Revised: 06/18/2024] [Accepted: 06/18/2024] [Indexed: 06/24/2024]
Abstract
Thrombosis is associated with various fatal arteriovenous syndromes including ischemic stroke, myocardial infarction, and pulmonary embolism. However, current clinical thrombolytic treatment strategies still have many problems in targeting and safety to meet the thrombolytic therapy needs. Understanding the molecular mechanism that underlies thrombosis is critical in developing effective thrombolytic strategies. It is well known that platelets play a central role in thrombosis and the binding of fibrinogen to activated platelets is a common pathway in the process of clot formation. Based on this, a concept of biomimetic thrombus-targeted thrombolytic strategy inspired from fibrinogen binding to activated platelets in thrombosis was proposed, which could selectively bind to activated platelets at a thrombus site, thus enabling targeted delivery and local release of thrombolytic agents for effective thrombolysis. In this review, we first summarized the main characteristics of platelets and fibrinogen, and then introduced the classical molecular mechanisms of thrombosis, including platelet adhesion, platelet activation and platelet aggregation through the interactions of activated platelets with fibrinogen. In addition, we highlighted the recent advances in biomimetic thrombus-targeted thrombolytic strategies which inspired from fibrinogen binding to activated platelets in thrombosis. The possible future directions and perspectives in this emerging area are briefly discussed.
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Affiliation(s)
- Yu Huang
- Department of Radiology, Shanghai Jiao Tong University School of Medicine Affiliated Shanghai Sixth People's Hospital, 600 Yi Shan Road, Shanghai 200233, PR China.
| | - Jiahua Wang
- Department of Radiology, Shanghai Jiao Tong University School of Medicine Affiliated Shanghai Sixth People's Hospital, 600 Yi Shan Road, Shanghai 200233, PR China
| | - Yuanyuan Guo
- Department of Radiology, Shanghai Jiao Tong University School of Medicine Affiliated Shanghai Sixth People's Hospital, 600 Yi Shan Road, Shanghai 200233, PR China
| | - Lingyue Shen
- Department of Oral & Maxillofacial-Head & Neck Oncology, Department of Laser and Aesthetic Medicine, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stoma-tology & Shanghai Research Institute of Stomatology, 639 Zhizaoju Road, Shanghai 200011, PR China.
| | - Yuehua Li
- Department of Radiology, Shanghai Jiao Tong University School of Medicine Affiliated Shanghai Sixth People's Hospital, 600 Yi Shan Road, Shanghai 200233, PR China.
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2
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Rist D, DePalma T, Stagner E, Tallman MM, Venere M, Skardal A, Schultz ZD. Cancer Cell Targeting, Magnetic Sorting, and SERS Detection through Cell Surface Receptors. ACS Sens 2023; 8:4636-4645. [PMID: 37988612 PMCID: PMC10921760 DOI: 10.1021/acssensors.3c01625] [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] [Indexed: 11/23/2023]
Abstract
Integrins are cellular surface receptors responsible for the activation of many cellular pathways in cancer. These integrin proteins can be specifically targeted by small peptide sequences that offer the potential for the differentiation of cellular subpopulations by using magnetically assisted cellular sorting techniques. By adding a gold shell to the magnetic nanoparticles, these integrin-peptide interactions can be differentiated by surface-enhanced Raman spectroscopy (SERS), providing a quick and reliable method for on-target binding. In this paper, we demonstrate the ability to differentiate the peptide-protein interactions of the small peptides CDPGYIGSR and cyclic RGDfC functionalized on gold-coated magnetic nanoparticles with the integrins they are known to bind to using their SERS signal. SW480 and SW620 colorectal cancer cells known to have the integrins of interest were then magnetically sorted using these functionalized nanoparticles, suggesting differentiation between the sorted populations and integrin populations among the two cell lines.
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Affiliation(s)
- David Rist
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tom DePalma
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Emerie Stagner
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Miranda M Tallman
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio 43210, United States
| | - Monica Venere
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Radiation Oncology, The Ohio State University, Columbus, Ohio 43210, United States
| | - Aleksander Skardal
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio 43210, United States
| | - Zachary D. Schultz
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
- The James Comprehensive Cancer Center, The Ohio State University, Columbus, Ohio 43210, United States
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3
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Sheridan A, Brown AC. Recent Advances in Blood Cell-Inspired and Clot Targeted Thrombolytic Therapies. J Tissue Eng Regen Med 2023; 2023:6117810. [PMID: 37731481 PMCID: PMC10511217 DOI: 10.1155/2023/6117810] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Myocardial infarction, stroke, and pulmonary embolism are all deadly conditions associated with excessive thrombus formation. Standard treatment for these conditions involves systemic delivery of thrombolytic agents to break up clots and restore blood flow; however, this treatment can impact the hemostatic balance in other parts of the vasculature, which can lead to excessive bleeding. To avoid this potential danger, targeted thrombolytic treatments that can successfully target thrombi and release an effective therapeutic load are necessary. Because activated platelets and fibrin make up a large proportion of clots, these two components provide ample opportunities for targeting. This review will highlight potential thrombus targeting mechanisms as well as recent advances in thrombolytic therapies which utilize blood-cells and clotting proteins to effectively target and lyse clots.
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Affiliation(s)
- Anastasia Sheridan
- Joint Department of Biomedical Engineering of University of North Carolina – Chapel Hill and North Carolina State University, Raleigh, NC 27695
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27606
| | - Ashley C. Brown
- Joint Department of Biomedical Engineering of University of North Carolina – Chapel Hill and North Carolina State University, Raleigh, NC 27695
- Comparative Medicine Institute, North Carolina State University, Raleigh, NC 27606
- Department of Material Science and Engineering, North Carolina State University, Raleigh, NC 27606
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4
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Yamada Y, Onda T, Hagiuda A, Kan R, Matsunuma M, Hamada K, Kikkawa Y, Nomizu M. RGDX 1 X 2 motif regulates integrin αvβ5 binding for pluripotent stem cell adhesion. FASEB J 2022; 36:e22389. [PMID: 35657599 DOI: 10.1096/fj.202200317r] [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: 02/24/2022] [Revised: 04/28/2022] [Accepted: 05/23/2022] [Indexed: 11/11/2022]
Abstract
The arginine-glycine-aspartic acid (RGD) motif is a cell adhesion sequence that binds to integrins. Some RGD-containing peptides promote adhesion of both embryonic stem cells and induced pluripotent stem cells (iPSCs); however, not all such RGD-containing peptides are active. In this study, we elucidated the role of RGD-neighboring sequences on iPSC adhesion using diverse synthetic peptides and recombinant proteins. Our results indicate that iPSC adhesion requires RGDX1 X2 sequences, such as RGDVF and RGDNY, and that the X1 X2 residues are essential for the adhesion via integrin αvβ5 but not αvβ3. iPSCs express integrin αvβ5 but not αvβ3; therefore, iPSC adhesion requires the RGDX1 X2 -containing sequences. The importance of the X1 X2 residues was confirmed with both HeLa and A549 cells, which express integrin αvβ5 but not αvβ3. Analysis of RGD-neighboring sequences provides important insights into ligand-binding specificity of integrins. Identification of integrin αvβ5-binding motifs is potentially useful in drug development, drug delivery, cell culture, and tissue engineering.
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Affiliation(s)
- Yuji Yamada
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Toru Onda
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Ayami Hagiuda
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Ryuji Kan
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Masumi Matsunuma
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Keisuke Hamada
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Yamato Kikkawa
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Motoyoshi Nomizu
- Department of Clinical Biochemistry, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
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5
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Li Y, Jin Y, He X, Tang Y, Zhou M, Guo W, Miao W. Cyclo(RGD) peptide-decorated silver nanoparticles with anti-platelet potential for active platelet-rich thrombus targeting. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2022; 41:102520. [PMID: 35038589 DOI: 10.1016/j.nano.2022.102520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 11/15/2021] [Accepted: 12/29/2021] [Indexed: 06/14/2023]
Abstract
The development of integrated nanomedicine for prevention and early diagnosis of thrombosis is highly significant. Platelet plays a vital role in thrombotic disorders, offering an ideal target for thromboprophylaxis and imaging of thrombi. We herein fabricated cyclo(RGD) peptide-decorated AgNPs (designated cRGD-AgNPs) for active targeting platelet-rich thrombi. In vitro cytotoxicity and hemolysis assays demonstrated that cRGD-AgNPs have acceptable biocompatibility pattern. Both PEG-AgNPs (non-targeted version) and cRGD-AgNPs can inhibit agonist-mediated platelet aggregation, whereas the latter exhibited significant attenuation on platelet activation and adhesion onto collagen and fibrinogen matrix. Furthermore, the superior binding ability of cRGD-AgNPs with platelet-rich thrombus was demonstrated in static/dynamic condition in vitro. In vivo studies revealed that cRGD-AgNPs could actively target thrombi in a mouse model of carotid artery thrombi with favorable safety. Our results here suggest that cRGD-AgNPs with intrinsic anti-platelet potential might be promising nano theranostics for thromboprophylaxis and active thrombus targeting.
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Affiliation(s)
- Yuanyuan Li
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, PR China
| | - Yangye Jin
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, PR China
| | - Xiaofeng He
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, PR China
| | - Yonghui Tang
- Department of General Surgery, Children's Hospital of Nanjing Medical University, Nanjing, PR China.
| | - Min Zhou
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, PR China
| | - Wenjing Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, PR China
| | - Wenjun Miao
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, PR China.
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6
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Luc NF, Rohner N, Girish A, Sekhon UDS, Neal MD, Gupta AS. Bioinspired artificial platelets: past, present and future. Platelets 2022; 33:35-47. [PMID: 34455908 PMCID: PMC8795470 DOI: 10.1080/09537104.2021.1967916] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Platelets are anucleate blood cells produced from megakaryocytes predominantly in the bone marrow and released into blood circulation at a healthy count of 150,000-400,00 per μL and circulation lifespan of 7-9 days. Platelets are the first responders at the site of vascular injury and bleeding, and participate in clot formation via injury site-specific primary mechanisms of adhesion, activation and aggregation to form a platelet plug, as well as secondary mechanisms of augmenting coagulation via thrombin amplification and fibrin generation. Platelets also secrete various granule contents that enhance these mechanisms for clot growth and stability. The resultant clot seals the injury site to stanch bleeding, a process termed as hemostasis. Due to this critical role, a reduction in platelet count or dysregulation in platelet function is associated with bleeding risks and hemorrhagic complications. These scenarios are often treated by prophylactic or emergency transfusion of platelets. However, platelet transfusions face significant challenges due to limited donor availability, difficult portability and storage, high bacterial contamination risks, and very short shelf life (~5-7 days). These are currently being addressed by a robust volume of research involving reduced temperature storage and pathogen reduction processes on donor platelets to improve shelf-life and reduce contamination, as well as bioreactor-based approaches to generate donor-independent platelets from stem cells in vitro. In parallel, a complementary research field has emerged that involves the design of artificial platelets utilizing biosynthetic particle constructs that functionally emulate various hemostatic mechanisms of platelets. Here, we provide a comprehensive review of the history and the current state-of-the-art artificial platelet approaches, along with discussing the translational opportunities and challenges.
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Affiliation(s)
- Norman F. Luc
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, OH 44106, USA
| | - Nathan Rohner
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, OH 44106, USA
| | - Aditya Girish
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, OH 44106, USA
| | | | - Matthew D. Neal
- University of Pittsburgh, Pittsburgh Trauma Research Center, Department of Surgery, Pittsburgh, PA 15123, USA
| | - Anirban Sen Gupta
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, OH 44106, USA
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7
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Huang Y, Gu B, Salles-Crawley II, Taylor KA, Yu L, Ren J, Liu X, Emerson M, Longstaff C, Hughes AD, Thom SA, Xu XY, Chen R. Fibrinogen-mimicking, multiarm nanovesicles for human thrombus-specific delivery of tissue plasminogen activator and targeted thrombolytic therapy. SCIENCE ADVANCES 2021; 7:7/23/eabf9033. [PMID: 34078604 PMCID: PMC8172176 DOI: 10.1126/sciadv.abf9033] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/14/2021] [Indexed: 05/03/2023]
Abstract
Clinical use of tissue plasminogen activator (tPA) in thrombolytic therapy is limited by its short circulation time and hemorrhagic side effects. Inspired by fibrinogen binding to activated platelets, we report a fibrinogen-mimicking, multiarm nanovesicle for thrombus-specific tPA delivery and targeted thrombolysis. This biomimetic system is based on the lipid nanovesicle coated with polyethylene glycol (PEG) terminally conjugated with a cyclic RGD (cRGD) peptide. Our experiments with human blood demonstrated its highly selective binding to activated platelets and efficient tPA release at a thrombus site under both static and physiological flow conditions. Its clot dissolution time in a microfluidic system was comparable to that of free tPA. Furthermore, we report a purpose-built computational model capable of simulating targeted thrombolysis of the tPA-loaded nanovesicle and with a potential in predicting the dynamics of thrombolysis in physiologically realistic scenarios. This combined experimental and computational work presents a promising platform for development of thrombolytic nanomedicines.
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Affiliation(s)
- Yu Huang
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Boram Gu
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
- School of Chemical Engineering, Chonnam National University, Gwangju, Republic of Korea
| | - Isabelle I Salles-Crawley
- Centre for Haematology, Department of Immunology and Inflammation, Imperial College London, Hammersmith Hospital Campus, London, UK
| | - Kirk A Taylor
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Li Yu
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Jie Ren
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Xuhan Liu
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK
| | - Michael Emerson
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Colin Longstaff
- Biotherapeutics Section, National Institute for Biological Standards and Control, South Mimms, Herts, UK
| | - Alun D Hughes
- Institute of Cardiovascular Science, University College London, London, UK
- MRC Unit for Lifelong Health and Ageing at University College London, London, UK
| | - Simon A Thom
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Xiao Yun Xu
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK.
| | - Rongjun Chen
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London, UK.
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8
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Lopez Mora N, Owens M, Schmidt S, Silva AF, Bradley M. Poly-Epsilon-Lysine Hydrogels with Dynamic Crosslinking Facilitates Cell Proliferation. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3851. [PMID: 32882810 PMCID: PMC7504584 DOI: 10.3390/ma13173851] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/20/2020] [Accepted: 08/26/2020] [Indexed: 11/16/2022]
Abstract
The extracellular matrix (ECM) is a three-dimensional network within which fundamental cell processes such as cell attachment, proliferation, and differentiation occur driven by its inherent biological and structural cues. Hydrogels have been used as biomaterials as they possess many of the ECM characteristics that control cellular processes. However, the permanent crosslinking often found in hydrogels fails to recapitulate the dynamic nature of the natural ECM. This not only hinders natural cellular migration but must also limit cellular expansion and growth. Moreover, there is an increased interest in the use of new biopolymers to create biomimetic materials that can be used for biomedical applications. Here we report on the natural polymer poly-ε-lysine in forming dynamic hydrogels via reversible imine bond formation, with cell attachment promoted by arginine-glycine-aspartic acid (RGD) incorporation. Together, the mechanical properties and cell behavior of the dynamic hydrogels with low poly-ε-lysine quantities indicated good cell viability and high metabolic activity.
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Affiliation(s)
- Nestor Lopez Mora
- EaStCHEM School of Chemistry, The University of Edinburgh, Edinburgh EH9 3FJ, UK; (M.O.); (S.S.)
| | - Matthew Owens
- EaStCHEM School of Chemistry, The University of Edinburgh, Edinburgh EH9 3FJ, UK; (M.O.); (S.S.)
| | - Sara Schmidt
- EaStCHEM School of Chemistry, The University of Edinburgh, Edinburgh EH9 3FJ, UK; (M.O.); (S.S.)
| | - Andreia F. Silva
- School of Physics and Astronomy, The University of Edinburgh, Edinburgh EH9 3FD, UK;
| | - Mark Bradley
- EaStCHEM School of Chemistry, The University of Edinburgh, Edinburgh EH9 3FJ, UK; (M.O.); (S.S.)
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9
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Schulz C, Krüger-Genge A, Jung F, Lendlein A. Aptamer supported in vitro endothelialization of poly(ether imide) films. Clin Hemorheol Microcirc 2020; 75:201-217. [PMID: 31985458 DOI: 10.3233/ch-190775] [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: 12/15/2022]
Abstract
Implantation of synthetic small-diameter vascular bypass grafts is often associated with an increased risk of failure, due to thrombotic events or late intimal hyperplasia. As one of the causes an insufficient hemocompatibility of the artificial surface is discussed. Endothelialization of synthetic grafts is reported to be a promising strategy for creating a self-renewing and regulative anti-thrombotic graft surface. However, the establishment of a shear resistant cell monolayer is still challenging. In our study, cyto- and immuno-compatible poly(ether imide) (PEI) films were explored as potential biomaterial for cardiovascular applications. Recently, we reported that the initial adherence of primary human umbilical vein endothelial cells (HUVEC) was delayed on PEI-films and about 9 days were needed to establish a confluent and almost shear resistant HUVEC monolayer. To accelerate the initial adherence of HUVEC, the PEI-film surface was functionalized with an aptamer-cRGD peptide based endothelialization supporting system. With this functionalization the initial adherence as well as the shear resistance of HUVEC on PEI-films was considerable improved compared to the unmodified polymer surface. The in vitro results confirm the general applicability of aptamers for an efficient functionalization of substrate surfaces.
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Affiliation(s)
- Christian Schulz
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Anne Krüger-Genge
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany
| | - Friedrich Jung
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany
| | - Andreas Lendlein
- Institute of Biomaterial Science and Berlin-Brandenburg Center for Regenerative Therapies, Helmholtz-Zentrum Geesthacht, Teltow, Germany.,Helmholtz Virtual Institute - Multifunctional Biomaterials for Medicine, Teltow and Berlin, Germany.,Institute of Chemistry, University of Potsdam, Potsdam, Germany
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10
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Del Cid JS, Reed NI, Molnar K, Liu S, Dang B, Jensen SA, DeGrado W, Handford PA, Sheppard D, Sundaram AB. A disease-associated mutation in fibrillin-1 differentially regulates integrin-mediated cell adhesion. J Biol Chem 2019; 294:18232-18243. [PMID: 31640988 DOI: 10.1074/jbc.ra119.011109] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/14/2019] [Indexed: 11/06/2022] Open
Abstract
Fibrillins serve as scaffolds for the assembly of elastic fibers that contribute to the maintenance of tissue homeostasis and regulate growth factor signaling in the extracellular space. Fibrillin-1 is a modular glycoprotein that includes 7 latent transforming growth factor β (TGFβ)-binding protein-like (TB) domains and mediates cell adhesion through integrin binding to the RGD motif in its 4th TB domain. A subset of missense mutations within TB4 cause stiff skin syndrome (SSS), a rare autosomal dominant form of scleroderma. The fibrotic phenotype is thought to be regulated by changes in the ability of fibrillin-1 to mediate integrin binding. We characterized the ability of each RGD-binding integrin to mediate cell adhesion to fibrillin-1 or a disease-causing variant. Our data show that 7 of the 8 RGD-binding integrins can mediate adhesion to fibrillin-1. A single amino acid substitution responsible for SSS (W1570C) markedly inhibited adhesion mediated by integrins α5β1, αvβ5, and αvβ6, partially inhibited adhesion mediated by αvβ1, and did not inhibit adhesion mediated by α8β1 or αIIbβ3. Adhesion mediated by integrin αvβ3 depended on the cell surface expression level. In the SSS mutant background, the presence of a cysteine residue in place of highly conserved tryptophan 1570 alters the conformation of the region containing the exposed RGD sequence within the same domain to differentially affect fibrillin's interactions with distinct RGD-binding integrins.
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Affiliation(s)
- Joselyn S Del Cid
- Department of Cell Biology, University of California San Francisco, San Francisco, California 94158
| | - Nilgun Isik Reed
- Department of Cell Biology, University of California San Francisco, San Francisco, California 94158
| | - Kathleen Molnar
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94518
| | - Sean Liu
- Department of Cell Biology, University of California San Francisco, San Francisco, California 94158
| | - Bobo Dang
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94518
| | - Sacha A Jensen
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - William DeGrado
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California 94518
| | - Penny A Handford
- Department of Biochemistry, University of Oxford, Oxford OX1 3QU, United Kingdom
| | - Dean Sheppard
- Department of Cell Biology, University of California San Francisco, San Francisco, California 94158
| | - Aparna B Sundaram
- Department of Cell Biology, University of California San Francisco, San Francisco, California 94158.
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11
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Girish A, Hickman DA, Banerjee A, Luc N, Ma Y, Miyazawa K, Sekhon UDS, Sun M, Huang S, Sen Gupta A. Trauma-targeted delivery of tranexamic acid improves hemostasis and survival in rat liver hemorrhage model. J Thromb Haemost 2019; 17:1632-1644. [PMID: 31220416 PMCID: PMC10124760 DOI: 10.1111/jth.14552] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Trauma-associated hemorrhage and coagulopathy remain leading causes of mortality. Such coagulopathy often leads to a hyperfibrinolytic phenotype where hemostatic clots become unstable because of upregulated tissue plasminogen activator (tPA) activity. Tranexamic acid (TXA), a synthetic inhibitor of tPA, has emerged as a promising drug to mitigate fibrinolysis. TXA is US Food and Drug Administration-approved for treating heavy menstrual and postpartum bleeding, and has shown promise in trauma treatment. However, emerging reports also implicate TXA for off-target systemic coagulopathy, thromboembolic complications, and neuropathy. OBJECTIVE We hypothesized that targeted delivery of TXA to traumatic injury site can enable its clot-stabilizing action site-selectively, to improve hemostasis and survival while avoiding off-target effects. To test this, we used liposomes as a model delivery vehicle, decorated their surface with a fibrinogen-mimetic peptide for anchorage to active platelets within trauma-associated clots, and encapsulated TXA within them. METHODS The TXA-loaded trauma-targeted nanovesicles (T-tNVs) were evaluated in vitro in rat blood, and then in vivo in a liver trauma model in rats. TXA-loaded control (untargeted) nanovesicles (TNVs), free TXA, or saline were studied as comparison groups. RESULTS Our studies show that in vitro, the T-tNVs could resist lysis in tPA-spiked rat blood. In vivo, T-tNVs maintained systemic safety, significantly reduced blood loss and improved survival in the rat liver hemorrhage model. Postmortem evaluation of excised tissue from euthanized rats confirmed systemic safety and trauma-targeted activity of the T-tNVs. CONCLUSION Overall, the studies establish the potential of targeted TXA delivery for safe injury site-selective enhancement and stabilization of hemostatic clots to improve survival in trauma.
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Affiliation(s)
- Aditya Girish
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - DaShawn A. Hickman
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio
| | - Ankush Banerjee
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Norman Luc
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Yifeng Ma
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Kenji Miyazawa
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Ujjal D. S. Sekhon
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Michael Sun
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Stephanie Huang
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, Ohio
- Department of Pathology, Case Western Reserve University, Cleveland, Ohio
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12
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Schmidt AK, Assmann A, Lichtenberg A, Boeken U. Systemische Inflammation und Herzchirurgie. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2018. [DOI: 10.1007/s00398-017-0173-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Hickman DA, Pawlowski CL, Sekhon UDS, Marks J, Gupta AS. Biomaterials and Advanced Technologies for Hemostatic Management of Bleeding. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:10.1002/adma.201700859. [PMID: 29164804 PMCID: PMC5831165 DOI: 10.1002/adma.201700859] [Citation(s) in RCA: 256] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Revised: 06/18/2017] [Indexed: 05/03/2023]
Abstract
Bleeding complications arising from trauma, surgery, and as congenital, disease-associated, or drug-induced blood disorders can cause significant morbidities and mortalities in civilian and military populations. Therefore, stoppage of bleeding (hemostasis) is of paramount clinical significance in prophylactic, surgical, and emergency scenarios. For externally accessible injuries, a variety of natural and synthetic biomaterials have undergone robust research, leading to hemostatic technologies including glues, bandages, tamponades, tourniquets, dressings, and procoagulant powders. In contrast, treatment of internal noncompressible hemorrhage still heavily depends on transfusion of whole blood or blood's hemostatic components (platelets, fibrinogen, and coagulation factors). Transfusion of platelets poses significant challenges of limited availability, high cost, contamination risks, short shelf-life, low portability, performance variability, and immunological side effects, while use of fibrinogen or coagulation factors provides only partial mechanisms for hemostasis. With such considerations, significant interdisciplinary research endeavors have been focused on developing materials and technologies that can be manufactured conveniently, sterilized to minimize contamination and enhance shelf-life, and administered intravenously to mimic, leverage, and amplify physiological hemostatic mechanisms. Here, a comprehensive review regarding the various topical, intracavitary, and intravenous hemostatic technologies in terms of materials, mechanisms, and state-of-art is provided, and challenges and opportunities to help advancement of the field are discussed.
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Affiliation(s)
- DaShawn A Hickman
- Case Western Reserve University School of Medicine, Department of Pathology, Cleveland, Ohio 44106, USA
| | - Christa L Pawlowski
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Ujjal D S Sekhon
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Joyann Marks
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
| | - Anirban Sen Gupta
- Case Western Reserve University, Department of Biomedical Engineering, Cleveland, Ohio 44106, USA
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14
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Sen Gupta A. Bio-inspired nanomedicine strategies for artificial blood components. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2017; 9:10.1002/wnan.1464. [PMID: 28296287 PMCID: PMC5599317 DOI: 10.1002/wnan.1464] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 01/23/2017] [Accepted: 01/29/2017] [Indexed: 11/12/2022]
Abstract
Blood is a fluid connective tissue where living cells are suspended in noncellular liquid matrix. The cellular components of blood render gas exchange (RBCs), immune surveillance (WBCs) and hemostatic responses (platelets), and the noncellular components (salts, proteins, etc.) provide nutrition to various tissues in the body. Dysfunction and deficiencies in these blood components can lead to significant tissue morbidity and mortality. Consequently, transfusion of whole blood or its components is a clinical mainstay in the management of trauma, surgery, myelosuppression, and congenital blood disorders. However, donor-derived blood products suffer from issues of shortage in supply, need for type matching, high risks of pathogenic contamination, limited portability and shelf-life, and a variety of side-effects. While robust research is being directed to resolve these issues, a parallel clinical interest has developed toward bioengineering of synthetic blood substitutes that can provide blood's functions while circumventing the above problems. Nanotechnology has provided exciting approaches to achieve this, using materials engineering strategies to create synthetic and semi-synthetic RBC substitutes for enabling oxygen transport, platelet substitutes for enabling hemostasis, and WBC substitutes for enabling cell-specific immune response. Some of these approaches have further extended the application of blood cell-inspired synthetic and semi-synthetic constructs for targeted drug delivery and nanomedicine. The current study provides a comprehensive review of the various nanotechnology approaches to design synthetic blood cells, along with a critical discussion of successes and challenges of the current state-of-art in this field. WIREs Nanomed Nanobiotechnol 2017, 9:e1464. doi: 10.1002/wnan.1464 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
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15
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Structural and functional aspects of decorsin and its analog as recognized by integrin αIIbβ3. J Mol Model 2016; 22:281. [PMID: 27796783 DOI: 10.1007/s00894-016-3147-1] [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: 01/20/2016] [Accepted: 10/09/2016] [Indexed: 10/20/2022]
Abstract
Decorsin is an antagonist of platelet glycoprotein integrin αIIbβ3 on platelets; the protein is 39 amino acids long with three disulfide bridges in its tertiary structure. To demonstrate decorsin's mechanism of action, we applied the computational virtual technique and platelet aggregation inhibition assay, which showed that the flanking amino-acid residues of the Arg-Gly-Asp (RGD) motif play an important role in platelet aggregation. The computational simulations revealed that the RGD motif mainly contributes to the stability of the complex when decorsion interacts with integrin αIIbβ3. However, the C-terminal residues, such as 34A→W and 35D→R, was also found to possibly play a key role in their binding structures. Moreover, we produced a decorsin analog (A34W plus D35R decorsin), in which the 34A (alanine) and 35D (aspartic acid) residues were respectively substituted by W (tryptophan) and R (arginine). This isoform was then recombinantly expressed in Escherichia coli. Intriguingly, this mutant type showed higher anti-platelet aggregation activity than the wildtype. Our study may further contribute to finding decorsin mutants with higher anti-platelet aggregation activity.
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16
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Ozcelik B, Chen R, Glattauer V, Kumar N, Willcox M, Thissen H. Crosslinked Platform Coatings Incorporating Bioactive Signals for the Control of Biointerfacial Interactions. Macromol Biosci 2016; 17. [DOI: 10.1002/mabi.201600315] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 09/01/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Berkay Ozcelik
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
| | - Renxun Chen
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - Veronica Glattauer
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
| | - Naresh Kumar
- School of Chemistry; University of New South Wales; Sydney NSW 2052 Australia
| | - MarkD.P. Willcox
- School of Optometry and Vision Science; University of New South Wales; Sydney NSW 2052 Australia
| | - Helmut Thissen
- Commonwealth Scientific and Industrial Research Organisation (CSIRO); Clayton VIC 3168 Australia
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17
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Zeller Meidell K, Robinson R, Vieira-de-Abreu A, Gormley AJ, Ghandehari H, W Grainger D, A Campbell R. RGDfK-functionalized gold nanorods bind only to activated platelets. J Biomed Mater Res A 2016; 105:209-217. [PMID: 27648522 DOI: 10.1002/jbm.a.35902] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 08/15/2016] [Accepted: 09/14/2016] [Indexed: 12/12/2022]
Abstract
Integrin-targeting peptide RGDfK-labeled gold nanorods (GNR) seek to improve hyperthermia targeted to solid tumors by exploiting the known up-regulation of integrin αvβ3 cell membrane proteins on solid tumor vasculature surfaces. Tumor binding specificity might be expected since surrounding tissues and endothelial cells have limited numbers of these receptors. However, RGD peptide binding to many proteins is promiscuous, with known affinity to several families of cell integrin receptors, and also possible binding to platelets after intravenous infusion via a different integrin receptor, αIIbβ3, on platelets. Binding of RGDfK-targeted GNR could considerably impact platelet function, ultimately leading to increased risk of bleeding or thrombosis depending on the degree of interaction. We sought to determine if RGDfK-labeled GNR could interact with platelets and alter platelet function. Targeted and untargeted nanorods exhibited little interaction with resting platelets in platelet rich plasma (PRP) preparations. However, upon platelet activation, peptide-targeted nanorods bound actively to platelets. Addition of RGDfK-GNR to unactivated platelets had little effect on markers of platelet activation, indicating that RGDfK-nanorods were incapable of inducing platelet activation. We next tested whether activated platelet function was altered in the presence of peptide-targeted nanorods. Platelet aggregation in whole blood and PRP in the presence of targeted nanorods had no significant effect on platelet aggregation. These data suggest that RGDfK-GNR alone have little impact on platelet function in plasma. However, nonspecific nanorod binding may occur in vascular beds where activated platelets are normally cleared, such as the spleen and liver, producing a possible toxicity risk for these nanomaterials. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 209-217, 2017.
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Affiliation(s)
- Krystin Zeller Meidell
- Department of Pharmaceutics and Pharmaceutical Chemistry, Health Sciences, University of Utah, Salt Lake City, Utah, 84112
| | - Ryan Robinson
- Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112.,Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, 84112
| | - Adriana Vieira-de-Abreu
- Program in Molecular Medicine, School of Medicine, University of Utah, Salt Lake City, Utah, 84112
| | - Adam J Gormley
- Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112.,Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, 84112
| | - Hamidreza Ghandehari
- Department of Pharmaceutics and Pharmaceutical Chemistry, Health Sciences, University of Utah, Salt Lake City, Utah, 84112.,Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112.,Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, 84112
| | - David W Grainger
- Department of Pharmaceutics and Pharmaceutical Chemistry, Health Sciences, University of Utah, Salt Lake City, Utah, 84112.,Department of Bioengineering, University of Utah, Salt Lake City, Utah, 84112.,Center for Nanomedicine, Nano Institute of Utah, University of Utah, Salt Lake City, Utah, 84112
| | - Robert A Campbell
- Program in Molecular Medicine, School of Medicine, University of Utah, Salt Lake City, Utah, 84112
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18
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Clevenger TN, Hinman CR, Ashley Rubin RK, Smither K, Burke DJ, Hawker CJ, Messina D, Van Epps D, Clegg DO. Vitronectin-Based, Biomimetic Encapsulating Hydrogel Scaffolds Support Adipogenesis of Adipose Stem Cells. Tissue Eng Part A 2016; 22:597-609. [PMID: 26956095 DOI: 10.1089/ten.tea.2015.0550] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Soft tissue defects are relatively common, yet currently used reconstructive treatments have varying success rates, and serious potential complications such as unpredictable volume loss and reabsorption. Human adipose-derived stem cells (ASCs), isolated from liposuction aspirate have great potential for use in soft tissue regeneration, especially when combined with a supportive scaffold. To design scaffolds that promote differentiation of these cells down an adipogenic lineage, we characterized changes in the surrounding extracellular environment during adipogenic differentiation. We found expression changes in both extracellular matrix proteins, including increases in expression of collagen-IV and vitronectin, as well as changes in the integrin expression profile, with an increase in expression of integrins such as αVβ5 and α1β1. These integrins are known to specifically interact with vitronectin and collagen-IV, respectively, through binding to an Arg-Gly-Asp (RGD) sequence. When three different short RGD-containing peptides were incorporated into three-dimensional (3D) hydrogel cultures, it was found that an RGD-containing peptide derived from vitronectin provided strong initial attachment, maintained the desired morphology, and created optimal conditions for in vitro 3D adipogenic differentiation of ASCs. These results describe a simple, nontoxic encapsulating scaffold, capable of supporting the survival and desired differentiation of ASCs for the treatment of soft tissue defects.
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Affiliation(s)
- Tracy N Clevenger
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
| | - Cassidy R Hinman
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California
| | - Rebekah K Ashley Rubin
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
| | | | - Daniel J Burke
- 4 Materials Research Laboratory, University of California , Santa Barbara
| | - Craig J Hawker
- 4 Materials Research Laboratory, University of California , Santa Barbara
| | | | | | - Dennis O Clegg
- 1 Center for Stem Cell Biology and Engineering, University of California , Santa Barbara, Santa Barbara, California.,2 Department of Molecular, Cellular and Developmental Biology, University of California , Santa Barbara, Santa Barbara, California
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19
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Koudelka S, Mikulik R, Mašek J, Raška M, Turánek Knotigová P, Miller AD, Turánek J. Liposomal nanocarriers for plasminogen activators. J Control Release 2016; 227:45-57. [PMID: 26876783 DOI: 10.1016/j.jconrel.2016.02.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 12/18/2022]
Abstract
Several plasminogen activators (PAs) have been found effective in treating different thromboembolic diseases. However, administration of conventional thrombolytic therapy is limited by a low efficacy of present formulations of PAs. Conventional treatments using these therapeutic proteins are associated with several limitations including rapid inactivation and clearance, short half-life, bleeding complications or non-specific tissue targeting. Liposome-based formulations of PAs such as streptokinase, tissue-plasminogen activator and urokinase have been developed to improve the therapeutic efficacy of these proteins. Resulting liposomal formulations were found to preserve the original activity of PAs, promote their selective delivery and improve thrombus targeting. Therapeutic potential of these liposome-based PAs has been demonstrated successfully in various pre-clinical models in vivo. Reductions in unwanted side effects (e.g., hemorrhage or immunogenicity) as well as enhancements of efficacy and safety were achieved in comparison to currently existing treatment options based on conventional formulations of PAs. This review summarizes present achievements in: (i) preparation of liposome-based formulations of various PAs, (ii) development of PEGylated and targeted liposomal PAs, (iii) physico-chemical characterization of these developed systems, and (iv) testing of their thrombolytic efficacy. We also look to the future and the imminent arrival of theranostic liposomal formulations to move this field forward.
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Affiliation(s)
- Stepan Koudelka
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Brno, Czech Republic; International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic.
| | - Robert Mikulik
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic; Neurology Department of Masaryk University and St. Anne's University Hospital Brno, Czech Republic
| | - Josef Mašek
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Brno, Czech Republic
| | - Milan Raška
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Brno, Czech Republic; Department of Immunology, Faculty of Medicine and Dentistry, Palacky University Olomouc, Czech Republic
| | | | - Andrew D Miller
- Institute of Pharmaceutical Science, King's College London, United Kingdom and Global Acorn Ltd, London, United Kingdom
| | - Jaroslav Turánek
- Department of Pharmacology and Immunotherapy, Veterinary Research Institute, Brno, Czech Republic.
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20
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A fibronectin mimetic motif improves integrin mediated cell biding to recombinant spider silk matrices. Biomaterials 2015; 74:256-66. [PMID: 26461118 DOI: 10.1016/j.biomaterials.2015.10.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 10/01/2015] [Accepted: 10/05/2015] [Indexed: 01/08/2023]
Abstract
The cell binding motif RGD is the most widely used peptide to improve cell binding properties of various biomaterials, including recombinant spider silk. In this paper we use genetic engineering to further enhance the cell supportive capacity of spider silk by presenting the RGD motif as a turn loop, similar to the one found in fibronectin (FN), but in the silk stabilized by cysteines, and therefore denoted FNCC. Human primary cells cultured on FNCC-silk showed increased attachment, spreading, stress fiber formation and focal adhesions, not only compared to RGD-silk, but also to silk fused with linear controls of the RGD containing motif from fibronectin. Cell binding to FNCC-silk was shown to involve the α5β1 integrin, and to support proliferation and migration of keratinocytes. The FNCC-silk protein allowed efficient assembly, and could even be transformed into free standing films, on which keratinocytes could readily form a monolayer culture. The results hold promise for future applications within tissue engineering.
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21
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Liu Y, Feng G, Ma Z, Xu C, Guo Z, Gong P, Xu L. Synthesis and Anti-Hepatitis B Virus Evaluation of 7-Methoxy-3-heterocyclic quinolin-6-ols. Arch Pharm (Weinheim) 2015; 348:776-785. [PMID: 26435294 DOI: 10.1002/ardp.201500238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/10/2015] [Accepted: 09/11/2015] [Indexed: 11/10/2022]
Abstract
A series of novel 7-methoxy-3-heterocyclic quinolin-6-ol derivatives were synthesized and evaluated for their anti-hepatitis B virus (HBV) activities and cytotoxicities in the HepG2.2.15 cell line. Five compounds, 14a, 15c, 15e, 16b, and 16f, displayed excellent potency and selectivity toward the HBV, with IC50 values of less than 5.0 µM and selectivity index values of 11.0-71.5. Structure-activity relationship studies indicated that the 1,3,4-thiadiazole and sulfinylmethyl derivatives showed the most potent activities against the HBV.
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Affiliation(s)
- Yajing Liu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Guobing Feng
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Zonghui Ma
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Chen Xu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Zhuang Guo
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Ping Gong
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
| | - Liying Xu
- Key Laboratory of Structure-Based Drug Design and Discovery, Ministry of Education, Shenyang Pharmaceutical University, Shenyang, P. R. China
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22
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Polishchuk PG, Samoylenko GV, Khristova TM, Krysko OL, Kabanova TA, Kabanov VM, Kornylov AY, Klimchuk O, Langer T, Andronati SA, Kuz'min VE, Krysko AA, Varnek A. Design, Virtual Screening, and Synthesis of Antagonists of αIIbβ3 as Antiplatelet Agents. J Med Chem 2015; 58:7681-94. [PMID: 26367138 DOI: 10.1021/acs.jmedchem.5b00865] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
This article describes design, virtual screening, synthesis, and biological tests of novel αIIbβ3 antagonists, which inhibit platelet aggregation. Two types of αIIbβ3 antagonists were developed: those binding either closed or open form of the protein. At the first step, available experimental data were used to build QSAR models and ligand- and structure-based pharmacophore models and to select the most appropriate tool for ligand-to-protein docking. Virtual screening of publicly available databases (BioinfoDB, ZINC, Enamine data sets) with developed models resulted in no hits. Therefore, small focused libraries for two types of ligands were prepared on the basis of pharmacophore models. Their screening resulted in four potential ligands for open form of αIIbβ3 and four ligands for its closed form followed by their synthesis and in vitro tests. Experimental measurements of affinity for αIIbβ3 and ability to inhibit ADP-induced platelet aggregation (IC50) showed that two designed ligands for the open form 4c and 4d (IC50 = 6.2 nM and 25 nM, respectively) and one for the closed form 12b (IC50 = 11 nM) were more potent than commercial antithrombotic Tirofiban (IC50 = 32 nM).
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Affiliation(s)
- Pavel G Polishchuk
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Georgiy V Samoylenko
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Tetiana M Khristova
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine.,Laboratory of Chemoinformatics (UMR 7140 CNRS/UniStra), University of Strasbourg , 1, rue B. Pascal, Strasbourg 67000, France
| | - Olga L Krysko
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Tatyana A Kabanova
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Vladimir M Kabanov
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Alexander Yu Kornylov
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Olga Klimchuk
- Laboratory of Chemoinformatics (UMR 7140 CNRS/UniStra), University of Strasbourg , 1, rue B. Pascal, Strasbourg 67000, France
| | - Thierry Langer
- Department of Pharmaceutical Chemistry, Faculty of Life Sciences, University of Vienna , Althanstraße 14, 1090 Vienna, Austria
| | - Sergei A Andronati
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Victor E Kuz'min
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Andrei A Krysko
- A.V. Bogatsky Physico-Chemical Institute of National Academy of Sciences of Ukraine , Lustdorfskaya doroga 86, Odessa 65080, Ukraine
| | - Alexandre Varnek
- Laboratory of Chemoinformatics (UMR 7140 CNRS/UniStra), University of Strasbourg , 1, rue B. Pascal, Strasbourg 67000, France
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23
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Abstract
This review covers the recent advances in the development of small RGD (Arg-Gly-Asp sequence) containing peptides and their mimetics as potential antithrombotic agents. Glycoprotein IIb/IIIa (GPIIb/IIIa) antagonists include monoclonal antibodies, RGD peptides, peptide hybrids and nonpeptide mimetics. The current trend in the development of nonpeptide mimetics is clearly directed toward orally active and safe antithrombotic drug candidates. But several nonpeptide mimetics, being evaluated for their oral activity in human clinical trials, are currently not approved for clinical use due to poor safety profile. It is expected that newer and more effective nonpeptide mimetics will be developed in the near future.
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24
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Abstract
While there are currently many well-established topical hemostatic agents for field administration, there are still limited tools to staunch bleeding at less accessible injury sites. Current clinical methods to restore hemostasis after large volume blood loss include platelet and clotting factor transfusion, which have respective drawbacks of short shelf life and risk of viral transmission. Therefore, synthetic hemostatic agents that can be delivered intravenously and encourage stable clot formation after localizing to sites of vascular injury are particularly appealing. In the past three decades, platelet substitutes have been prepared using drug delivery vehicles such as liposomes and PLGA nanoparticles that have been modified to mimic platelet properties. Additionally, structural considerations such as particle size, shape, and flexibility have been addressed in a number of reports. Since platelets are the first responders after vascular injury, platelet substitutes represent an important class of intravenous hemostats under development. More recently, materials affecting fibrin formation have been introduced to induce faster or more stable blood clot formation through fibrin cross-linking. Fibrin represents a major structural component in the final blood clot, and a fibrin-based hemostatic mechanism acting downstream of initial platelet plug formation may be a safer alternative to platelets to avoid undesired thrombotic activity. This Review explores intravenous hemostats under development and strategies to optimize their clotting activity.
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Affiliation(s)
- Leslie W Chan
- †Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, 3720 15th Avenue NE, Box 355061, Seattle, Washington 98195, United States
| | - Nathan J White
- ‡Department of Medicine, Division of Emergency Medicine, University of Washington, Seattle, Washington 98195, United States
| | - Suzie H Pun
- †Department of Bioengineering and Molecular Engineering and Sciences Institute, University of Washington, 3720 15th Avenue NE, Box 355061, Seattle, Washington 98195, United States
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25
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Pan V, Siva PN, Modery-Pawlowski CL, Singh Sekhon UD, Gupta AS. Targeted killing of metastatic cells using a platelet-inspired drug delivery system. RSC Adv 2015. [DOI: 10.1039/c5ra05339k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Pro-metastatic tumor cells in circulation interact with active platelets that mediate various mechanisms of hematologic metastasis. Elucidating and utilizing these interactions on delivery vehicles can provide unique ways of metastasis-targeted drug delivery.
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Affiliation(s)
- Victor Pan
- Department of Biomedical Engineering
- Case Western Reserve University
- Cleveland
- USA
| | - Preethi N. Siva
- Department of Biomedical Engineering
- Case Western Reserve University
- Cleveland
- USA
| | | | | | - Anirban Sen Gupta
- Department of Biomedical Engineering
- Case Western Reserve University
- Cleveland
- USA
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26
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Lozza C, Navarro-Teulon I, Pèlegrin A, Pouget JP, Vivès E. Peptides in receptor-mediated radiotherapy: from design to the clinical application in cancers. Front Oncol 2013; 3:247. [PMID: 24093086 PMCID: PMC3782707 DOI: 10.3389/fonc.2013.00247] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 09/06/2013] [Indexed: 12/29/2022] Open
Abstract
Short peptides can show high affinity for specific receptors overexpressed on tumor cells. Some of these are already used in cancerology as diagnostic tools and others are in clinical trials for therapeutic applications. Therefore, peptides exhibit great potential as a diagnostic tool but also as an alternative or an additional antitumoral approach upon the covalent attachment of a therapeutic moiety such as a radionuclide or a cytotoxic drug. The chemistry offers flexibility to graft onto the targeting-peptide either fluorine or iodine directly, or metallic radionuclides through appropriate chelating agent. Since short peptides are straightforward to synthesize, there is an opportunity to further improve existing peptides or to design new ones for clinical applications. However, several considerations have to be taken into account to optimize the recognition properties of the targeting-peptide to its receptor, to improve its stability in the biological fluids and its residence in the body, or to increase its overall therapeutic effect. In this review, we highlight the different aspects which need to be considered for the development of an efficient peptide receptor-mediated radionuclide therapy in different neoplasms.
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Affiliation(s)
- Catherine Lozza
- Institut de Recherche en Cancérologie de Montpellier , Montpellier , France ; INSERM, U896 , Montpellier , France ; Université Montpellier 1 , Montpellier , France ; Institut Régional du Cancer Montpellier , Montpellier , France
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27
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Jäger M, Böge C, Janissen R, Rohrbeck D, Hülsen T, Lensing-Höhn S, Krauspe R, Herten M. Osteoblastic potency of bone marrow cells cultivated on functionalized biometals with cyclic RGD-peptide. J Biomed Mater Res A 2013; 101:2905-14. [DOI: 10.1002/jbm.a.34590] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 01/03/2013] [Indexed: 11/07/2022]
Affiliation(s)
| | - C. Böge
- Orthopaedic Department; University of Duisburg-Essen; Germany
| | | | - D. Rohrbeck
- Institute of Molecular Physical Chemistry; Heinrich-Heine University Düsseldorf; Germany
| | - T. Hülsen
- Orthopaedic Department; University of Duisburg-Essen; Germany
| | - S. Lensing-Höhn
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
| | - R. Krauspe
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
| | - M. Herten
- Orthopaedic Department; Heinrich-Heine-University Medical School; Düsseldorf; Germany
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28
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Modery-Pawlowski CL, Master AM, Pan V, Howard G, Gupta AS. A platelet-mimetic paradigm for metastasis-targeted nanomedicine platforms. Biomacromolecules 2013; 14:910-9. [PMID: 23360320 PMCID: PMC3690560 DOI: 10.1021/bm301996p] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
There is compelling evidence that, beyond their traditional role in hemostasis and thrombosis, platelets play a significant role in mediating hematologic mechanisms of tumor metastasis by directly and indirectly interacting with pro-metastatic cancer cells. With this rationale, we hypothesized that platelets can be an effective paradigm to develop nanomedicine platforms that utilize platelet-mimetic interaction mechanisms for targeted diagnosis and therapy of metastatic cancer cells. Here we report on our investigation of the development of nanoconstructs that interact with metastatic cancer cells via platelet-mimetic heteromultivalent ligand-receptor pathways. For our studies, pro-metastatic human breast cancer cell line MDA-MB-231 was studied for its surface expression of platelet-interactive receptors, in comparison to another low-metastatic human breast cancer cell line, MCF-7. Certain platelet-interactive receptors were found to be significantly overexpressed on the MDA-MB-231 cells, and these cells showed significantly enhanced binding interactions with active platelets compared to MCF-7 cells. Based upon these observations, two specific receptor interactions were selected, and corresponding ligands were engineered onto the surface of liposomes as model nanoconstructs, to enable platelet-mimetic binding to the cancer cells. Our model platelet-mimetic liposomal constructs showed enhanced targeting and attachment of MDA-MB-231 cells compared to the MCF-7 cells. These results demonstrate the promise of utilizing platelet-mimetic constructs in modifying nanovehicle constructs for metastasis-targeted drug as well as modifying surfaces for ex-vivo cell enrichment diagnostic technologies.
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Affiliation(s)
- Christa L. Modery-Pawlowski
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Drive, Cleveland, OH 44106
| | - Alyssa M. Master
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Drive, Cleveland, OH 44106
| | - Victor Pan
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Drive, Cleveland, OH 44106
| | - Gregory Howard
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Drive, Cleveland, OH 44106
| | - Anirban Sen Gupta
- Department of Biomedical Engineering, Case Western Reserve University, 2071 Martin Luther King Drive, Cleveland, OH 44106
- Case Comprehensive Cancer Center, Case Western Reserve University, 11100 Euclid Avenue, Cleveland, OH 44106
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29
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Ercolani E, Del Gaudio C, Bianco A. Vascular tissue engineering of small-diameter blood vessels: reviewing the electrospinning approach. J Tissue Eng Regen Med 2013; 9:861-88. [DOI: 10.1002/term.1697] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 10/08/2012] [Accepted: 12/20/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Enrico Ercolani
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
| | - Costantino Del Gaudio
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
| | - Alessandra Bianco
- Department of Industrial Engineering, INSTM Research Unit Roma Tor Vergata; University of Rome ‘Tor Vergata’; Via del Politecnico 1 00133 Rome Italy
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30
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Modery-Pawlowski CL, Tian LL, Pan V, McCrae KR, Mitragotri S, Sen Gupta A. Approaches to synthetic platelet analogs. Biomaterials 2013; 34:526-41. [DOI: 10.1016/j.biomaterials.2012.09.074] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 09/29/2012] [Indexed: 11/15/2022]
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31
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Park SH, Sim WY, Min BH, Yang SS, Khademhosseini A, Kaplan DL. Chip-based comparison of the osteogenesis of human bone marrow- and adipose tissue-derived mesenchymal stem cells under mechanical stimulation. PLoS One 2012; 7:e46689. [PMID: 23029565 PMCID: PMC3460891 DOI: 10.1371/journal.pone.0046689] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Accepted: 09/06/2012] [Indexed: 12/13/2022] Open
Abstract
Adipose tissue-derived stem cells (ASCs) are considered as an attractive stem cell source for tissue engineering and regenerative medicine. We compared human bone marrow-derived mesenchymal stem cells (hMSCs) and hASCs under dynamic hydraulic compression to evaluate and compare osteogenic abilities. A novel micro cell chip integrated with microvalves and microscale cell culture chambers separated from an air-pressure chamber was developed using microfabrication technology. The microscale chip enables the culture of two types of stem cells concurrently, where each is loaded into cell culture chambers and dynamic compressive stimulation is applied to the cells uniformly. Dynamic hydraulic compression (1 Hz, 1 psi) increased the production of osteogenic matrix components (bone sialoprotein, oateopontin, type I collagen) and integrin (CD11b and CD31) expression from both stem cell sources. Alkaline phosphatase and Alrizarin red staining were evident in the stimulated hMSCs, while the stimulated hASCs did not show significant increases in staining under the same stimulation conditions. Upon application of mechanical stimulus to the two types of stem cells, integrin (β1) and osteogenic gene markers were upregulated from both cell types. In conclusion, stimulated hMSCs and hASCs showed increased osteogenic gene expression compared to non-stimulated groups. The hMSCs were more sensitive to mechanical stimulation and more effective towards osteogenic differentiation than the hASCs under these modes of mechanical stimulation.
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Affiliation(s)
- Sang-Hyug Park
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
- Department of Biomedical Engineering, Jungwon University, Goesan-eup, Chungbuk, Korea
| | - Woo Young Sim
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Byoung-Hyun Min
- Department of Orthopeadic Surgery, Medical School, Ajou University, Youngtong-Gu, Suwon, Korea
- Department of Molecular Science and Technology, Ajou University, Youngtong-Gu, Suwon, Korea
| | - Sang Sik Yang
- Department of Electrical and Computer Engineering, Ajou University, Youngtong-Gu, Suwon, Korea
| | - Ali Khademhosseini
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
- Harvard-Massachusetts Institute of Technology Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts, United States of America
| | - David L. Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts, United States of America
- * E-mail:
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32
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Santos H, Bimbo L, Das Neves J, Sarmento B, INEB. Nanoparticulate targeted drug delivery using peptides and proteins. Nanomedicine (Lond) 2012. [DOI: 10.1533/9780857096449.2.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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33
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Bellis SL. Advantages of RGD peptides for directing cell association with biomaterials. Biomaterials 2011; 32:4205-10. [PMID: 21515168 DOI: 10.1016/j.biomaterials.2011.02.029] [Citation(s) in RCA: 461] [Impact Index Per Article: 35.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 02/12/2011] [Indexed: 12/14/2022]
Abstract
Despite many years of in vitro research confirming the effectiveness of RGD in promoting cell attachment to a wide variety of biomaterials, animal studies evaluating tissue responses to implanted RGD-functionalized substrates have yielded more variable results. The goals of this report are to present some of the reasons why cell culture studies may not always reliably predict in vivo responses, and more importantly, to highlight potential applications that may benefit from the use of RGD peptides.
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Affiliation(s)
- Susan L Bellis
- Department of Physiology and Biophysics, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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34
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Tal-Gan Y, Hurevich M, Klein S, Ben-Shimon A, Rosenthal D, Hazan C, Shalev DE, Niv MY, Levitzki A, Gilon C. Backbone cyclic peptide inhibitors of protein kinase B (PKB/Akt). J Med Chem 2011; 54:5154-64. [PMID: 21650457 DOI: 10.1021/jm2003969] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Elevated levels of activated protein kinase B (PKB/Akt) have been detected in many types of cancer. Substrate-based peptide inhibitors have the advantage of selectivity due to their extensive interactions with the kinase-specific substrate binding site but often lack necessary pharmacological properties. Chemical modifications of potent peptide inhibitors, such as cyclization, may overcome these drawbacks while maintaining potency. We present an extensive structure-activity relationship (SAR) study of a potent peptide-based PKB/Akt inhibitor. Two backbone cyclic (BC) peptide libraries with varying modes of cyclization, bridge chemistry, and ring size were synthesized and evaluated for in vitro PKB/Akt inhibition. Backbone-to-backbone urea BC peptides were more potent than N-terminus-to-backbone amide BC peptides. Several analogues were up to 10-fold more active than the parent linear peptide. Some activity trends could be rationalized using computational surface mapping of the PKB/Akt kinase catalytic domain. The novel molecules have enhanced pharmacological properties which make them promising lead candidates.
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Affiliation(s)
- Yftah Tal-Gan
- Institute of Chemistry, The Hebrew University of Jerusalem, 91904 Jerusalem, Israel
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35
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Nefzi A, Fenwick JE. N-terminus 4-Chloromethyl Thiazole Peptide as a Macrocyclization Tool in the Synthesis of Cyclic Peptides: Application to the Synthesis of Conformationally Constrained RGD-Containing Integrin Ligands. Tetrahedron Lett 2011; 52:817-819. [PMID: 21423849 PMCID: PMC3057379 DOI: 10.1016/j.tetlet.2010.12.043] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis of conformationally constrained RGD-containing integrin ligands via an efficient solid-phase intramolecular thioalkylation reaction is described. The reaction of S-nucleophiles with newly generated N-terminal 4-chloromethyl thiazoles leads to the desired cyclic RGD products 5 in high purities and good overall yields.
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Affiliation(s)
- Adel Nefzi
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port Saint Lucie, FL 34987
| | - Jason E. Fenwick
- Torrey Pines Institute for Molecular Studies, 11350 SW Village Parkway, Port Saint Lucie, FL 34987
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36
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Srinivasan R, Marchant RE, Gupta AS. In vitro and in vivo platelet targeting by cyclic RGD-modified liposomes. J Biomed Mater Res A 2010; 93:1004-15. [PMID: 19743511 DOI: 10.1002/jbm.a.32549] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cell-selective delivery using ligand-decorated nanoparticles is a promising modality for treating cancer and vascular diseases. We are developing liposome nanoparticles surface-modified by RGD peptide ligands having targeting specificity to integrin GPIIb-IIIa. This integrin is upregulated and stimulated into a ligand-binding conformation on the surface activated platelets. Activated-platelet adhesion and aggregation are primary events in atherosclerosois, thrombosis, and restenosis. Hence, platelet-targeted nanoparticles hold the promise of vascular site-selective delivery of drugs and imaging probes. Here, we report in vitro and ex vivo microscopy studies of platelet-targeting by liposomes surface-modified with a cyclic RGD peptide. The peptide-modified liposomes were labeled either with a lipophilic fluorophore or with lipid-tethered Nanogold(R). For in vitro tests, coverslip-adhered activated human platelets were incubated with probe-labeled liposomes, followed by analysis with fluorescence microscopy, phase contrast microscopy, and scanning electron microscopy (SEM). For in vivo tests, the liposomes were introduced within a catheter-injured carotid artery restenosis model in rats and post-euthanasia, the artery was imaged ex vivo by fluorescence microscopy and SEM. All microscopy results showed successful platelet-targeting by the peptide-modified liposomes. The in vitro SEM results also enabled visualization of nanoscopic liposomes attached to activated platelets. The results validate our nanoparticle design for site-selective vascular delivery.
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Affiliation(s)
- Rekha Srinivasan
- Department of Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
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37
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Silverman AP, Kariolis MS, Cochran JR. Cystine-knot peptides engineered with specificities for αIIbβ3 or αIIbβ3 and αvβ3 integrins are potent inhibitors of platelet aggregation. J Mol Recognit 2010; 24:127-35. [DOI: 10.1002/jmr.1036] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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38
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Hurevich M, Tal-Gan Y, Klein S, Barda Y, Levitzki A, Gilon C. Novel method for the synthesis of urea backbone cyclic peptides using new Alloc-protected glycine building units. J Pept Sci 2010; 16:178-85. [DOI: 10.1002/psc.1218] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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39
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Abstract
Prevention of the coagulation cascade and platelet activation is the foremost demand for biomaterials in contact with blood. In this review we describe the underlying mechanisms of these processes and offer the current state of antithrombotic strategies. We give an overview of methods to prevent protein and platelet adhesion, as well as techniques to immobilize biochemically active molecules on biomaterial surfaces. Finally, recent strategies in biofunctionalization by endothelial cell seeding as well as their possible clinical applications are discussed.
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40
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Diaz R, Passarella RJ, Hallahan DE. Determining glioma response to radiation therapy using recombinant peptides. Expert Rev Anticancer Ther 2009; 8:1787-96. [PMID: 18983239 DOI: 10.1586/14737140.8.11.1787] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Presently, cancer response is measured by imaging assessment of tumor volumes or by repeated biopsy to analyze pharmacodynamics. These methods of monitoring cancer response are inefficient because volume changes typically require therapy for prolonged time intervals and neoplasms within the brain are less amenable to sequential biopsies. Peptide ligands selected from phage-displayed peptide libraries can rapidly differentiate responding from resistant gliomas. These peptides, in turn, can be labeled with internal emitters to provide a means of noninvasive assessment of glioma susceptibility to radiotherapy within 24 h of therapy. This is platform technology and could allow for ineffective therapy to be modified or switched so that patients are not subjected to a delayed reassessment (2 months) of response to therapy.
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Affiliation(s)
- Roberto Diaz
- Department of Radiation Oncology, Vanderbilt University Medical Center, Nashville, TN 37232, USA.
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41
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von der Mark K, Park J, Bauer S, Schmuki P. Nanoscale engineering of biomimetic surfaces: cues from the extracellular matrix. Cell Tissue Res 2009; 339:131-53. [DOI: 10.1007/s00441-009-0896-5] [Citation(s) in RCA: 280] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Accepted: 10/08/2009] [Indexed: 11/29/2022]
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42
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Pangburn TO, Petersen MA, Waybrant B, Adil MM, Kokkoli E. Peptide- and aptamer-functionalized nanovectors for targeted delivery of therapeutics. J Biomech Eng 2009; 131:074005. [PMID: 19655996 DOI: 10.1115/1.3160763] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Targeted delivery of therapeutics is an area of vigorous research, and peptide- and aptamer-functionalized nanovectors are a promising class of targeted delivery vehicles. Both peptide- and aptamer-targeting ligands can be readily designed to bind a target selectively with high affinity, and more importantly are molecules accessible by chemical synthesis and relatively compact compared with antibodies and full proteins. The multitude of peptide ligands that have been used for targeted delivery are covered in this review, with discussion of binding selectivity and targeting performance for these peptide sequences where possible. Aptamers are RNA or DNA strands evolutionarily engineered to specifically bind a chosen target. Although use of aptamers in targeted delivery is a relatively new avenue of research, the current state of the field is covered and promises of future advances in this area are highlighted. Liposomes, the classic drug delivery vector, and polymeric nanovectors functionalized with peptide or aptamer binding ligands will be discussed in this review, with the exclusion of other drug delivery vehicles. Targeted delivery of therapeutics, from DNA to classic small molecule drugs to protein therapeutics, by these targeted nanovectors is reviewed with coverage of both in vitro and in vivo deliveries. This is an exciting and dynamic area of research and this review seeks to discuss its broad scope.
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Affiliation(s)
- Todd O Pangburn
- Department of Chemical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
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43
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Reiss S, Sieber M, Oberle V, Wentzel A, Spangenberg P, Claus R, Kolmar H, Lösche W. Inhibition of platelet aggregation by grafting RGD and KGD sequences on the structural scaffold of small disulfide-rich proteins. Platelets 2009; 17:153-7. [PMID: 16702041 DOI: 10.1080/09537100500436663] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Disintegrins represent a group of disulfide-rich peptides ranging in size from 41 to over 80 residues and are antagonists of several integrin receptors. Disintegrins containing an RGD or KGD sequence are potent inhibitors of platelet aggregation as they block the binding of fibrinogen to alpha(IIb)beta(3) integrin. The high affinity binding to alpha(IIb)beta(3) in comparison to short linear peptides has been attributed to the localisation of the RGD or KGD sequence within a defined three-dimensional structure. Cystine knot microproteins are members of another family of small disulfide-rich peptides that consist of only 28-40 amino acid residues. They display numerous biological activities depending on the peptide sequence of loop regions that are fixed on a structural scaffold that is stabilised by three knot-forming disulfide bonds. In the present study we grafted RGD and KGD containing peptide sequences with seven and 11 amino acids, respectively, into two cystine knot microproteins, the trypsin inhibitor EETI-II and the melanocortin receptor binding domain of the human agouti-related protein AGRP, as well as into the small disintegrin obtustatin. The engineered proteins were much more potent to inhibit the fibrinogen binding, alpha(IIb)beta(3) activation and platelet aggregation when compared to the grafted peptides. Differences that were observed between the engineered proteins indicate the importance of the structural scaffold and the amino acids neighbouring the grafted peptide sequences.
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Affiliation(s)
- Sandy Reiss
- Clinic for Anaesthesiology and Intensive Care Medicine, University Hospital, Jena, Germany
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44
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Vyas SP, Vaidya B. Targeted delivery of thrombolytic agents: role of integrin receptors. Expert Opin Drug Deliv 2009; 6:499-508. [DOI: 10.1517/17425240902878002] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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45
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de Mel A, Jell G, Stevens MM, Seifalian AM. Biofunctionalization of biomaterials for accelerated in situ endothelialization: a review. Biomacromolecules 2008; 9:2969-79. [PMID: 18831592 DOI: 10.1021/bm800681k] [Citation(s) in RCA: 287] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The higher patency rates of cardiovascular implants, including vascular bypass grafts, stents, and heart valves are related to their ability to inhibit thrombosis, intimal hyperplasia, and calcification. In native tissue, the endothelium plays a major role in inhibiting these processes. Various bioengineering research strategies thereby aspire to induce endothelialization of graft surfaces either prior to implantation or by accelerating in situ graft endothelialization. This article reviews potential bioresponsive molecular components that can be incorporated into (and/or released from) biomaterial surfaces to obtain accelerated in situ endothelialization of vascular grafts. These molecules could promote in situ endothelialization by the mobilization of endothelial progenitor cells (EPC) from the bone marrow, encouraging cell-specific adhesion (endothelial cells (EC) and/or EPC) to the graft and, once attached, by controlling the proliferation and differentiation of these cells. EC and EPC interactions with the extracellular matrix continue to be a principal source of inspiration for material biofunctionalization, and therefore, the latest developments in understanding these interactions will be discussed.
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Affiliation(s)
- Achala de Mel
- Centre of Nanotechnology, Biomaterials and Tissue Engineering, UCL Division of Surgery & Interventional Science, University College London, London, United Kingdom
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46
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Kamioka S, Shimazu S, Doi T, Takahashi T. Combinatorial Synthesis of RGD Model Cyclic Peptides Utilizing a Palladium-Catalyzed Carbonylative Macrolactamization on a Polymer Support. ACTA ACUST UNITED AC 2008; 10:681-90. [DOI: 10.1021/cc800089m] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Seiji Kamioka
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan
| | - Sayaka Shimazu
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan
| | - Takayuki Doi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan
| | - Takashi Takahashi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro, Tokyo 152-8552, Japan
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47
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48
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Huang G, Zhou Z, Srinivasan R, Penn MS, Kottke-Marchant K, Marchant RE, Gupta AS. Affinity manipulation of surface-conjugated RGD peptide to modulate binding of liposomes to activated platelets. Biomaterials 2008; 29:1676-85. [PMID: 18192005 DOI: 10.1016/j.biomaterials.2007.12.015] [Citation(s) in RCA: 100] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Accepted: 12/16/2007] [Indexed: 12/21/2022]
Abstract
Platelet adhesion, activation and fibrinogen-mediated aggregation are primary events in vascular thrombosis and occlusion. An injectable delivery system that can carry thrombolytics selectively to the sites of active platelet aggregation has immense potential in minimally invasive targeted therapy of vascular occlusion. To this end we are studying liposomes surface-modified by fibrinogen-mimetic RGD motifs that can selectively target and bind integrin GPIIb-IIIa on activated platelets. Here we report liposome surface-modification with a conformationally constrained high affinity cyclic RGD motif to modulate the GPIIb-IIIa-binding capability of the liposomes. Such affinity enhancement is important for practical in vivo applications to compete with native fibrinogen towards binding GPIIb-IIIa. The platelet-binding of RGD-modified liposomes was studied by fluorescence and scanning electron microscopy, and flow cytometry, in vitro. Binding of RGD-modified liposomes was also tested in vivo in a rat carotid injury model and analyzed ex vivo by fluorescence microscopy. The results from all experiments show that cyclic RGD-liposomes bind activated platelets significantly higher compared to linear RGD-liposomes. Hence, the results establish the feasibility of modulating the platelet-targeting and binding ability of vascularly targeted liposomes by manipulating the affinity of surface-modifying ligands.
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Affiliation(s)
- Guofeng Huang
- Department of Biomedical Engineering, Case Western Reserve University, Wickenden Building, 10900 Euclid Avenue, Cleveland, OH 44106-7207, USA
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49
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Bi W, Cai J, Liu S, Baudy-Floc'h M, Bi L. Design, synthesis and cardioprotective effect of a new class of dual-acting agents: Phenolic tetrahydro-β-carboline RGD peptidomimetic conjugates. Bioorg Med Chem 2007; 15:6909-19. [PMID: 17827017 DOI: 10.1016/j.bmc.2007.08.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2007] [Revised: 08/08/2007] [Accepted: 08/09/2007] [Indexed: 11/16/2022]
Abstract
In this study, a new class of phenolic tetrahydro-beta-carboline RGD peptidomimetic conjugates was designed and synthesized. The radical scavenging activities of these newly synthesized compounds 12a-c were evaluated in PC12 cell survival assays. The NO scavenging activities of these compounds were confirmed in the acetylcholine-induced vasorelaxation assay. Compounds 12a-c were efficacious in a rat arterial thrombosis model, and were active in ADP- or PAF-induced in vitro platelet aggregation assays, which suggests these compounds also possess anti-thrombotic activity. The beneficial effects of dual-acting agent 12c were demonstrated on the ischemia-reperfusion induced cardiac infarct size and oxidative change in an in vivo rat model.
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Affiliation(s)
- Wei Bi
- Second Hospital of HeBei Medical University, Shijiazhuang 050000, PR China
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50
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Manzoni L, Bassanini M, Belvisi L, Motto I, Scolastico C, Castorina M, Pisano C. Nonpeptide Integrin Antagonists: RGD Mimetics Incorporating Substituted Azabicycloalkanes as Amino Acid Replacements. European J Org Chem 2007. [DOI: 10.1002/ejoc.200600840] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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