1
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Gupta S, Puttaiahgowda YM, Deiglmayr L. Recent advances in the design and immobilization of heparin for biomedical application: A review. Int J Biol Macromol 2024; 264:130743. [PMID: 38462098 DOI: 10.1016/j.ijbiomac.2024.130743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
Heparin, a member of the glycosaminoglycan family, is renowned as the most negatively charged biomolecule discovered within the realm of human biology. This polysaccharide serves a vital role as a regulator for various proteins, cells, and tissues within the human body, positioning itself as a pivotal macromolecule of significance. The domain of biology has witnessed substantial interest in the intricate design of heparin and its derivatives, particularly focusing on heparin-based polymers and hydrogels. This intrigue spans a wide spectrum of applications, encompassing diverse areas such as protein adsorption, anticoagulant properties, controlled drug release, development of implants, stent innovation, enhancement of blood compatibility, acceleration of wound healing, and pioneering strides in tissue engineering. This comprehensive overview delves into a multitude of developed heparin conjugates, employing various methods, and explores their functions in both the biomedicine and electronics fields. The efficacy of materials derived from heparin is also thoroughly investigated, encompassing considerations such as thrombogenicity, drug release kinetics, affinity for growth factors (GFs), biocompatibility, and electrochemical analyses. We firmly believe that by redirecting focus towards research and advancements in heparin-related polymers/hydrogels, this study will ignite further research and accelerate potential breakthroughs in this promising and evolving field of discovery.
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Affiliation(s)
- Sonali Gupta
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Yashoda Malgar Puttaiahgowda
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
| | - Lisa Deiglmayr
- Department of Chemistry, University of Munich (LMU), Butenandtstraβe 5-13, (D), 81377 Munich, Germany
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2
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Zheng SY, Wan XX, Kambey PA, Luo Y, Hu XM, Liu YF, Shan JQ, Chen YW, Xiong K. Therapeutic role of growth factors in treating diabetic wound. World J Diabetes 2023; 14:364-395. [PMID: 37122434 PMCID: PMC10130901 DOI: 10.4239/wjd.v14.i4.364] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 01/16/2023] [Accepted: 03/21/2023] [Indexed: 04/12/2023] Open
Abstract
Wounds in diabetic patients, especially diabetic foot ulcers, are more difficult to heal compared with normal wounds and can easily deteriorate, leading to amputation. Common treatments cannot heal diabetic wounds or control their many complications. Growth factors are found to play important roles in regulating complex diabetic wound healing. Different growth factors such as transforming growth factor beta 1, insulin-like growth factor, and vascular endothelial growth factor play different roles in diabetic wound healing. This implies that a therapeutic modality modulating different growth factors to suit wound healing can significantly improve the treatment of diabetic wounds. Further, some current treatments have been shown to promote the healing of diabetic wounds by modulating specific growth factors. The purpose of this study was to discuss the role played by each growth factor in therapeutic approaches so as to stimulate further therapeutic thinking.
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Affiliation(s)
- Shen-Yuan Zheng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha 410013, Hunan Province, China
| | - Xin-Xing Wan
- Department of Endocrinology, Third Xiangya Hospital, Central South University, Changsha 410013, Hunan Province, China
| | - Piniel Alphayo Kambey
- Department of Neurobiology and Anatomy, Xuzhou Medical University, Xuzhou 221004, Jiangsu Province, China
| | - Yan Luo
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Xi-Min Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha 410008, Hunan Province, China
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha 410013, Hunan Province, China
| | - Yi-Fan Liu
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Jia-Qi Shan
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Yu-Wei Chen
- Clinical Medicine Eight-Year Program, Xiangya School of Medicine, Central South University, Changsha 410013, Hunan Province, China
| | - Kun Xiong
- Department of Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha 410013, Hunan Province, China
- Key Laboratory of Emergency and Trauma, College of Emergency and Trauma, Hainan Medical University, Haikou 571199, Hainan Province, China
- Hunan Key Laboratory of Ophthalmology, Central South University, Changsha 410013, Hunan Province, China
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3
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Michna A, Pomorska A, Ozcan O. Biocompatible Macroion/Growth Factor Assemblies for Medical Applications. Biomolecules 2023; 13:biom13040609. [PMID: 37189357 DOI: 10.3390/biom13040609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/24/2023] [Accepted: 03/26/2023] [Indexed: 03/31/2023] Open
Abstract
Growth factors are a class of proteins that play a role in the proliferation (the increase in the number of cells resulting from cell division) and differentiation (when a cell undergoes changes in gene expression becoming a more specific type of cell) of cells. They can have both positive (accelerating the normal healing process) and negative effects (causing cancer) on disease progression and have potential applications in gene therapy and wound healing. However, their short half-life, low stability, and susceptibility to degradation by enzymes at body temperature make them easily degradable in vivo. To improve their effectiveness and stability, growth factors require carriers for delivery that protect them from heat, pH changes, and proteolysis. These carriers should also be able to deliver the growth factors to their intended destination. This review focuses on the current scientific literature concerning the physicochemical properties (such as biocompatibility, high affinity for binding growth factors, improved bioactivity and stability of the growth factors, protection from heat, pH changes or appropriate electric charge for growth factor attachment via electrostatic interactions) of macroions, growth factors, and macroion-growth factor assemblies, as well as their potential uses in medicine (e.g., diabetic wound healing, tissue regeneration, and cancer therapy). Specific attention is given to three types of growth factors: vascular endothelial growth factors, human fibroblast growth factors, and neurotrophins, as well as selected biocompatible synthetic macroions (obtained through standard polymerization techniques) and polysaccharides (natural macroions composed of repeating monomeric units of monosaccharides). Understanding the mechanisms by which growth factors bind to potential carriers could lead to more effective delivery methods for these proteins, which are of significant interest in the diagnosis and treatment of neurodegenerative and civilization diseases, as well as in the healing of chronic wounds.
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4
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Rahman MM, Islam MR, Alam Tumpa MA, Shohag S, Shakil Khan Shuvo, Ferdous J, Kajol SA, Aljohani ASM, Al Abdulmonem W, Rauf A, Thiruvengadam M. Insights into the promising prospect of medicinal chemistry studies against neurodegenerative disorders. Chem Biol Interact 2023; 373:110375. [PMID: 36739931 DOI: 10.1016/j.cbi.2023.110375] [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: 11/02/2022] [Revised: 12/06/2022] [Accepted: 01/30/2023] [Indexed: 02/05/2023]
Abstract
Medicinal chemistry is an interdisciplinary field that incorporates organic chemistry, biochemistry, physical chemistry, pharmacology, informatics, molecular biology, structural biology, cell biology, and other disciplines. Additionally, it considers molecular factors such as the mode of action of the drugs, their chemical structure-activity relationship (SAR), and pharmacokinetic aspects like absorption, distribution, metabolism, elimination, and toxicity. Neurodegenerative disorders (NDs), which are defined by the breakdown of neurons over time, are affecting an increasing number of people. Oxidative stress, particularly the increased production of Reactive Oxygen Species (ROS), plays a crucial role in the growth of various disorders, as indicated by the identification of protein, lipid, and Deoxyribonucleic acid (DNA) oxidation products in vivo. Because of their inherent nature, most biological molecules are vulnerable to ROS, even if they play a role in metabolic parameters and cell signaling. Due to their high polyunsaturated fatty acid content, low antioxidant barrier, and high oxygen uptake, neurons are particularly vulnerable to oxidation by nature. As a result, excessive ROS generation in neurons looks especially harmful, and the mechanisms associated with biomolecule oxidative destruction are several and complex. This review focuses on the formation and management of ROS, as well as their chemical characteristics (both thermodynamic and kinetic), interactions, and implications in NDs.
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Affiliation(s)
- Md Mominur Rahman
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Md Rezaul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Mst Afroza Alam Tumpa
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Sheikh Shohag
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University Buraydah, 52571, Saudi Arabia
| | - Shakil Khan Shuvo
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Jannatul Ferdous
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Saima Akter Kajol
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, 1207, Bangladesh
| | - Abdullah S M Aljohani
- Department of Veterinary Medicine, College of Agriculture and Veterinary Medicine, Qassim University Buraydah, 52571, Saudi Arabia
| | - Waleed Al Abdulmonem
- Department of Pathology, College of Medicine Qassim University, Buraydah, Saudi Arabia
| | - Abdur Rauf
- Department of Chemistry, University of Swabi, Swabi, Anbar, 23430, Khyber Pakhtunkhwa (KP), Pakistan.
| | - Muthu Thiruvengadam
- Department of Applied Bioscience, College of Life and Environmental Sciences, Konkuk University, Seoul, 05029, South Korea; Department of Microbiology, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, 600077, Tamil Nadu, India.
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5
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Nabizadeh Z, Nasrollahzadeh M, Daemi H, Baghaban Eslaminejad M, Shabani AA, Dadashpour M, Mirmohammadkhani M, Nasrabadi D. Micro- and nanotechnology in biomedical engineering for cartilage tissue regeneration in osteoarthritis. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2022; 13:363-389. [PMID: 35529803 PMCID: PMC9039523 DOI: 10.3762/bjnano.13.31] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 03/24/2022] [Indexed: 05/12/2023]
Abstract
Osteoarthritis, which typically arises from aging, traumatic injury, or obesity, is the most common form of arthritis, which usually leads to malfunction of the joints and requires medical interventions due to the poor self-healing capacity of articular cartilage. However, currently used medical treatment modalities have reported, at least in part, disappointing and frustrating results for patients with osteoarthritis. Recent progress in the design and fabrication of tissue-engineered microscale/nanoscale platforms, which arises from the convergence of stem cell research and nanotechnology methods, has shown promising results in the administration of new and efficient options for treating osteochondral lesions. This paper presents an overview of the recent advances in osteochondral tissue engineering resulting from the application of micro- and nanotechnology approaches in the structure of biomaterials, including biological and microscale/nanoscale topographical cues, microspheres, nanoparticles, nanofibers, and nanotubes.
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Affiliation(s)
- Zahra Nabizadeh
- Department of Medical Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Biotechnology Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | | | - Hamed Daemi
- Department of Cell Engineering, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mohamadreza Baghaban Eslaminejad
- Department of Stem Cell and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Ali Akbar Shabani
- Department of Medical Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Biotechnology Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Mehdi Dadashpour
- Department of Medical Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Biotechnology Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Majid Mirmohammadkhani
- Department of Epidemiology and Biostatistics, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, Iran
| | - Davood Nasrabadi
- Department of Medical Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Biotechnology Research Center, Semnan University of Medical Sciences, Semnan, Iran
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6
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Berry-Kilgour C, Cabral J, Wise L. Advancements in the Delivery of Growth Factors and Cytokines for the Treatment of Cutaneous Wound Indications. Adv Wound Care (New Rochelle) 2021; 10:596-622. [PMID: 33086946 DOI: 10.1089/wound.2020.1183] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Significance: Wound healing involves the phasic production of growth factors (GFs) and cytokines to progress an acute wound to a resolved scar. Dysregulation of these proteins contributes to both wound chronicity and excessive scarring. Direct supplementation of GFs and cytokines for treatment of healing and scarring complications has, however, been disappointing. Failings likely relate to an inability to deliver recombinant proteins at physiologically relevant levels to an environment conducive to healing. Recent Advances: Inspired by the extracellular matrix, natural biomaterials have been developed that resemble human skin, and are capable of delivering bioactives. Hybrid biomaterials made using multiple polymers, fabrication methods, and proteins are proving efficacious in animal models of acute and impaired wound healing. Critical Issues: For clinical translation, these delivery systems must be tailored for specific wound indications and the correct phase of healing. GFs and cytokines must be delivered in a controlled manner that will target specific healing or scarring impairments. Preclinical assessment in clinically relevant animal models of impaired or excessive healing is critical. Future Directions: Clinical success will likely depend on the GF or cytokine selected, their compatibility with the chosen biomaterial(s), degradation rate of the fabricated system, and the degree of control over release kinetics. Further testing is essential to assess which wound indications are most suited to specific delivery systems and to prove whether they provide superior efficacy over direct protein therapies.
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Affiliation(s)
- Caitlin Berry-Kilgour
- Department of Pharmacology and Toxicology, School of Biomedical Sciences; Dunedin, New Zealand
| | - Jaydee Cabral
- Department of Chemistry, University of Otago, Dunedin, New Zealand
- Department of Food Sciences, University of Otago, Dunedin, New Zealand
| | - Lyn Wise
- Department of Pharmacology and Toxicology, School of Biomedical Sciences; Dunedin, New Zealand
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7
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Aslani S, Kabiri M, HosseinZadeh S, Hanaee-Ahvaz H, Taherzadeh ES, Soleimani M. The applications of heparin in vascular tissue engineering. Microvasc Res 2020; 131:104027. [DOI: 10.1016/j.mvr.2020.104027] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 06/01/2020] [Accepted: 06/02/2020] [Indexed: 02/06/2023]
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8
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Vasanthan V, Fatehi Hassanabad A, Pattar S, Niklewski P, Wagner K, Fedak PWM. Promoting Cardiac Regeneration and Repair Using Acellular Biomaterials. Front Bioeng Biotechnol 2020; 8:291. [PMID: 32363184 PMCID: PMC7180212 DOI: 10.3389/fbioe.2020.00291] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 03/19/2020] [Indexed: 12/11/2022] Open
Abstract
Ischemic heart disease is a common cause of end-stage heart failure and has persisted as one of the main causes of end stage heart failure requiring transplantation. Maladaptive myocardial remodeling due to ischemic injury involves multiple cell types and physiologic mechanisms. Pathogenic post-infarct remodeling involves collagen deposition, chamber dilatation and ventricular dysfunction. There have been significant improvements in medication and revascularization strategies. However, despite medical optimization and opportunities to restore blood flow, physicians lack therapies that directly access and manipulate the heart to promote healthy post-infarct myocardial remodeling. Strategies are now arising that use bioactive materials to promote cardiac regeneration by promoting angiogenesis and inhibiting cardiac fibrosis; and many of these strategies leverage the unique advantage of cardiac surgery to directly visualize and manipulate the heart. Although cellular-based strategies are emerging, multiple barriers exist for clinical translation. Acellular materials have also demonstrated preclinical therapeutic potential to promote angiogenesis and attenuate fibrosis and may be able to surmount these translational barriers. Within this review we outline various acellular biomaterials and we define epicardial infarct repair and intramyocardial injection, which focus on administering bioactive materials to the cardiac epicardium and myocardium respectively to promote cardiac regeneration. In conjunction with optimized medical therapy and revascularization, these techniques show promise to upregulate pathways of cardiac regeneration to preserve heart function.
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Affiliation(s)
- Vishnu Vasanthan
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Ali Fatehi Hassanabad
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Simranjit Pattar
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Paul Niklewski
- MDP Solutions, Cincinnati, OH, United States.,Department of Pharmacology & Systems Physiology, College of Medicine, University of Cincinnati, Cincinnati, OH, United States.,Health Economics and Clinical Outcomes Research, Xavier University, Cincinnati, OH, United States
| | - Karl Wagner
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada.,Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, ON, Canada
| | - Paul W M Fedak
- Section of Cardiac Surgery, Department of Cardiac Sciences, Libin Cardiovascular Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
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9
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Amirsadeghi A, Jafari A, Eggermont LJ, Hashemi SS, Bencherif SA, Khorram M. Vascularization strategies for skin tissue engineering. Biomater Sci 2020; 8:4073-4094. [DOI: 10.1039/d0bm00266f] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Lack of proper vascularization after skin trauma causes delayed wound healing. This has sparked the development of various tissue engineering strategies to improve vascularization.
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Affiliation(s)
- Armin Amirsadeghi
- Department of Chemical Engineering
- School of Chemical and Petroleum Engineering
- Shiraz University
- Shiraz 71348-51154
- Iran
| | - Arman Jafari
- Department of Chemical Engineering
- School of Chemical and Petroleum Engineering
- Shiraz University
- Shiraz 71348-51154
- Iran
| | | | - Seyedeh-Sara Hashemi
- Burn & Wound Healing Research Center
- Shiraz University of Medical Science
- Shiraz 71345-1978
- Iran
| | - Sidi A. Bencherif
- Department of Chemical Engineering
- Northeastern University
- Boston
- USA
- Department of Bioengineering
| | - Mohammad Khorram
- Department of Chemical Engineering
- School of Chemical and Petroleum Engineering
- Shiraz University
- Shiraz 71348-51154
- Iran
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10
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Abri S, Ghatpande AA, Ress J, Barton HA, Leipzig ND. Polyionic Complexed Antibacterial Heparin–Chitosan Particles for Antibiotic Delivery. ACS APPLIED BIO MATERIALS 2019; 2:5848-5858. [DOI: 10.1021/acsabm.9b00833] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shahrzad Abri
- Department of Chemical and Biomolecular Engineering and ‡Department of Biology, University of Akron, Akron, Ohio 44325, United States of America
| | | | - Jacob Ress
- Department of Chemical and Biomolecular Engineering and ‡Department of Biology, University of Akron, Akron, Ohio 44325, United States of America
| | | | - Nic D. Leipzig
- Department of Chemical and Biomolecular Engineering and ‡Department of Biology, University of Akron, Akron, Ohio 44325, United States of America
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11
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Nejaddehbashi F, Hashemitabar M, Bayati V, Abbaspour M, Moghimipour E, Orazizadeh M. Application of polycaprolactone, chitosan, and collagen composite as a nanofibrous mat loaded with silver sulfadiazine and growth factors for wound dressing. Artif Organs 2018; 43:413-423. [PMID: 30311249 DOI: 10.1111/aor.13369] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/18/2018] [Accepted: 10/02/2018] [Indexed: 12/28/2022]
Abstract
Fabrication of nanofibrous biomaterials composed of natural and synthetic materials that incorporated with antibiotic and growth factors with controlled release manner is an attractive topic in wound healing. The purpose of this study was to prepare optimal composite of materials as biomimetic nanofibrous mats for application in wound healing. The mat was prepared of polycaprolactone (PCL) in the bottom, chitosan/poly ethylene oxide (Cs/PEO) in the middle, and PCL/collagen (PCL/Coll) in the top layer. A panel of standard characterization tests of nanofibrous mat was performed and its compatibilities in strength and integration were confirmed. Middle layer was loaded with epidermal growth factor (EGF) and basic fibroblast growth factor (bFGF), and silver sulfadiazine (SSD) was incorporated in the bottom layer as an anti-infection factor. Then, on the dorsum of rats, a 400-mm2 wound was created and surrounded by a silicone ring to control the usual tissue contractions. Nanofibrous mats with or without growth factors were applied as wound dressings and at day 14, the healing process was evaluated. At day 14, the treated group by designed mat showed faster epithelialization and angiogenesis. Silicone ring in the test group was desirable in wound closure compared to the control group. Reformation of skin tissue was manifested in a shorter time. This composite nanofibrous mat could be introduced as a dynamic and effective candidate for wound dressing.
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Affiliation(s)
- Fereshte Nejaddehbashi
- Cellular and Molecular Research Center-Department of Anatomical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahmoud Hashemitabar
- Cellular and Molecular Research Center-Department of Anatomical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Vahid Bayati
- Cellular and Molecular Research Center-Department of Anatomical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mohammadreza Abbaspour
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Eskandar Moghimipour
- Cellular and Molecular Research Center-Department of Anatomical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Faculty of Pharmacy, Nanotechnology Research center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahmoud Orazizadeh
- Cellular and Molecular Research Center-Department of Anatomical Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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12
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Choi D, Komeda M, Heo J, Hong J, Matsusaki M, Akashi M. Vascular Endothelial Growth Factor Incorporated Multilayer Film Induces Preangiogenesis in Endothelial Cells. ACS Biomater Sci Eng 2018; 4:1833-1842. [DOI: 10.1021/acsbiomaterials.8b00100] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Daheui Choi
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Misaki Komeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jiwoong Heo
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Michiya Matsusaki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Mitsuru Akashi
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Department of Frontier Biosciences, Graduate School of Frontier Biosciences, Osaka University, 1-3 Yamadaoaka, Suita, Osaka 565-0871, Japan
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13
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Wang B, Patnaik SS, Brazile B, Butler JR, Claude A, Zhang G, Guan J, Hong Y, Liao J. Establishing Early Functional Perfusion and Structure in Tissue Engineered Cardiac Constructs. Crit Rev Biomed Eng 2017; 43:455-71. [PMID: 27480586 DOI: 10.1615/critrevbiomedeng.2016016066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Myocardial infarction (MI) causes massive heart muscle death and remains a leading cause of death in the world. Cardiac tissue engineering aims to replace the infarcted tissues with functional engineered heart muscles or revitalize the infarcted heart by delivering cells, bioactive factors, and/or biomaterials. One major challenge of cardiac tissue engineering and regeneration is the establishment of functional perfusion and structure to achieve timely angiogenesis and effective vascularization, which are essential to the survival of thick implants and the integration of repaired tissue with host heart. In this paper, we review four major approaches to promoting angiogenesis and vascularization in cardiac tissue engineering and regeneration: delivery of pro-angiogenic factors/molecules, direct cell implantation/cell sheet grafting, fabrication of prevascularized cardiac constructs, and the use of bioreactors to promote angiogenesis and vascularization. We further provide a detailed review and discussion on the early perfusion design in nature-derived biomaterials, synthetic biodegradable polymers, tissue-derived acellular scaffolds/whole hearts, and hydrogel derived from extracellular matrix. A better understanding of the current approaches and their advantages, limitations, and hurdles could be useful for developing better materials for future clinical applications.
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Affiliation(s)
- Bo Wang
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi; Department of Bioengineering, University of Texas at Arlington, Arlington, Texas
| | - Sourav S Patnaik
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi
| | - Bryn Brazile
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi
| | - J Ryan Butler
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi
| | - Andrew Claude
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi
| | - Ge Zhang
- Department of Biomedical Engineering, University of Akron, Ohio
| | - Jianjun Guan
- Department of Material Science and Technology, Ohio State University, Columbus, Ohio
| | - Yi Hong
- Department of Biomedical Engineering, Alabama State University, Montgomery, Alabama
| | - Jun Liao
- Department of Biological Engineering and College of Veterinary Medicine, Mississippi State University, Mississippi
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14
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Choi WI, Sahu A, Vilos C, Kamaly N, Jo SM, Lee JH, Tae G. Bioinspired Heparin Nanosponge Prepared by Photo-crosslinking for Controlled Release of Growth Factors. Sci Rep 2017; 7:14351. [PMID: 29084990 PMCID: PMC5662564 DOI: 10.1038/s41598-017-14040-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Accepted: 10/03/2017] [Indexed: 12/02/2022] Open
Abstract
Growth factors have great therapeutic potential for various disease therapy and tissue engineering applications. However, their clinical efficacy is hampered by low bioavailability, rapid degradation in vivo and non-specific biodistribution. Nanoparticle based delivery systems are being evaluated to overcome these limitations. Herein, we have developed a thermosensitive heparin nanosponge (Hep-NS) by a one step photopolymerization reaction between diacrylated pluronic and thiolated heparin molecules. The amount of heparin in Hep-NS was precisely controlled by varying the heparin amount in the reaction feed. Hep-NS with varying amounts of heparin showed similar size and shape properties, though surface charge decreased with an increase in the amount of heparin conjugation. The anticoagulant activity of the Hep-NS decreased by 65% compared to free heparin, however the Hep-NS retained their growth factor binding ability. Four different growth factors, bFGF, VEGF, BMP-2, and HGF were successfully encapsulated into Hep-NS. In vitro studies showed sustained release of all the growth factors for almost 60 days and the rate of release was directly dependent on the amount of heparin in Hep-NS. The released growth factors retained their bioactivity as assessed by a cell proliferation assay. This heparin nanosponge is therefore a promising nanocarrier for the loading and controlled release of growth factors.
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Affiliation(s)
- Won Il Choi
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea.
| | - Abhishek Sahu
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea
| | - Cristian Vilos
- Universidad Andres Bello, Laboratory of Nanomedicine and Targeted Delivery, Center for Integrative Medicine and Innovative Science, Faculty of Medicine, Center for Bioinformatics and Integrative Biology, Faculty of Biological Sciences, Santiago, 8370071, Chile.,Center for the Development of Nanoscience and Nanotechnology, CEDENNA, 9170124, Santiago, Chile
| | - Nazila Kamaly
- Technical University of Denmark, Department of Micro and Nanotechnology, DTU Nanotech, Bioinspired Nanomaterials Lab, 2800, Kgs, Lyngby, Denmark
| | - Seong-Min Jo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
| | - Jin Hyung Lee
- Center for Convergence Bioceramic Materials, Convergence R&D Division, Korea Institute of Ceramic Engineering and Technology, 202, Osongsaengmyeong 1-ro, Osong-eup, Heungdeok-gu, Cheongju, Chungbuk, 28160, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdan-gwagiro, Buk-gu, Gwangju, 61005, Republic of Korea.
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Lee JN, Chun SY, Lee HJ, Jang YJ, Choi SH, Kim DH, Oh SH, Song PH, Lee JH, Kim JK, Kwon TG. Human Urine-derived Stem Cells Seeded Surface Modified Composite Scaffold Grafts for Bladder Reconstruction in a Rat Model. J Korean Med Sci 2015; 30:1754-63. [PMID: 26713050 PMCID: PMC4689819 DOI: 10.3346/jkms.2015.30.12.1754] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 09/02/2015] [Indexed: 11/29/2022] Open
Abstract
We conducted this study to investigate the synergistic effect of human urine-derived stem cells (USCs) and surface modified composite scaffold for bladder reconstruction in a rat model. The composite scaffold (Polycaprolactone/Pluronic F127/3 wt% bladder submucosa matrix) was fabricated using an immersion precipitation method, and heparin was immobilized on the surface via covalent conjugation. Basic fibroblast growth factor (bFGF) was loaded onto the heparin-immobilized scaffold by a simple dipping method. In maximal bladder capacity and compliance analysis at 8 weeks post operation, the USCs-scaffold(heparin-bFGF) group showed significant functional improvement (2.34 ± 0.25 mL and 55.09 ± 11.81 µL/cm H2O) compared to the other groups (2.60 ± 0.23 mL and 56.14 ± 9.00 µL/cm H2O for the control group, 1.46 ± 0.18 mL and 34.27 ± 4.42 µL/cm H2O for the partial cystectomy group, 1.76 ± 0.22 mL and 35.62 ± 6.69 µL/cm H2O for the scaffold group, and 1.92 ± 0.29 mL and 40.74 ± 7.88 µL/cm H2O for the scaffold(heparin-bFGF) group, respectively). In histological and immunohistochemical analysis, the USC-scaffold(heparin-bFGF) group showed pronounced, well-differentiated, and organized smooth muscle bundle formation, a multi-layered and pan-cytokeratin-positive urothelium, and high condensation of submucosal area. The USCs seeded scaffold(heparin-bFGF) exhibits significantly increased bladder capacity, compliance, regeneration of smooth muscle tissue, multi-layered urothelium, and condensed submucosa layers at the in vivo study.
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Affiliation(s)
- Jun Nyung Lee
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - So Young Chun
- Bio-Medical Research Institute, Kyungpook National University Hospital, Daegu, Korea
| | - Hyo-Jung Lee
- Bio-Medical Research Institute, Kyungpook National University Hospital, Daegu, Korea
| | - Yu-Jin Jang
- Department of Neural Development and Disease, Korea Brain Research Institute, Daegu, Korea
| | - Seock Hwan Choi
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Dae Hwan Kim
- Department of Laboratory Animal Research Support Team, Yeungnam University, Daegu, Korea
| | - Se Heang Oh
- Department of Nanobiomedical Science & WCU Research Center, Dankook University, Cheonan, Korea
| | - Phil Hyun Song
- Department of Urology, Yeungnam University College of Medicine, Daegu, Korea
| | - Jin Ho Lee
- Department of Advanced Materials, Hannam University, Daejeon, Korea
| | - Jong Kun Kim
- Department of Emergency Medicine, Kyungpook National University School of Medicine, Daegu, Korea
| | - Tae Gyun Kwon
- Department of Urology, Kyungpook National University School of Medicine, Daegu, Korea
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16
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Liu Q, Huang Y, Lan Y, Zuo Q, Li C, Zhang Y, Guo R, Xue W. Acceleration of skin regeneration in full-thickness burns by incorporation of bFGF-loaded alginate microspheres into a CMCS-PVA hydrogel. J Tissue Eng Regen Med 2015; 11:1562-1573. [DOI: 10.1002/term.2057] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 01/25/2015] [Accepted: 04/29/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Quan Liu
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Yuchen Huang
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Yong Lan
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
| | - Qinhua Zuo
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Chenghua Li
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Yi Zhang
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Rui Guo
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
| | - Wei Xue
- Key Laboratory of Biomaterials; Guangdong Higher Education Institutes; Guangzhou People's Republic of China
- Department of Biomedical Engineering; Jinan University; Guangzhou People's Republic of China
- Key Laboratory of Functional Protein Research; Guangdong Higher Education Institute; Guangzhou People's Republic of China
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17
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Hettiaratchi MH, Miller T, Temenoff JS, Guldberg RE, McDevitt TC. Heparin microparticle effects on presentation and bioactivity of bone morphogenetic protein-2. Biomaterials 2014; 35:7228-38. [PMID: 24881028 DOI: 10.1016/j.biomaterials.2014.05.011] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 05/04/2014] [Indexed: 11/29/2022]
Abstract
Biomaterials capable of providing localized and sustained presentation of bioactive proteins are critical for effective therapeutic growth factor delivery. However, current biomaterial delivery vehicles commonly suffer from limitations that can result in low retention of growth factors at the site of interest or adversely affect growth factor bioactivity. Heparin, a highly sulfated glycosaminoglycan, is an attractive growth factor delivery vehicle due to its ability to reversibly bind positively charged proteins, provide sustained delivery, and maintain protein bioactivity. This study describes the fabrication and characterization of heparin methacrylamide (HMAm) microparticles for recombinant growth factor delivery. HMAm microparticles were shown to efficiently bind several heparin-binding growth factors (e.g. bone morphogenetic protein-2 (BMP-2), vascular endothelial growth factor (VEGF), and basic fibroblast growth factor (FGF-2)), including a wide range of BMP-2 concentrations that exceeds the maximum binding capacity of other common growth factor delivery vehicles, such as gelatin. BMP-2 bioactivity was assessed on the basis of alkaline phosphatase (ALP) activity induced in skeletal myoblasts (C2C12). Microparticles loaded with BMP-2 stimulated comparable C2C12 ALP activity to soluble BMP-2 treatment, indicating that BMP-2-loaded microparticles retain bioactivity and potently elicit a functional cell response. In summary, our results suggest that heparin microparticles stably retain large amounts of bioactive BMP-2 for prolonged periods of time, and that presentation of BMP-2 via heparin microparticles can elicit cell responses comparable to soluble BMP-2 treatment. Consequently, heparin microparticles present an effective method of delivering and spatially retaining growth factors that could be used in a variety of systems to enable directed induction of cell fates and tissue regeneration.
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Affiliation(s)
- Marian H Hettiaratchi
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, 315 Ferst Drive, Atlanta, GA 30332, USA
| | - Tobias Miller
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, 315 Ferst Drive, Atlanta, GA 30332, USA
| | - Johnna S Temenoff
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, 315 Ferst Drive, Atlanta, GA 30332, USA; The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332, USA
| | - Robert E Guldberg
- The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332, USA; The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, 801 Ferst Drive, Atlanta, GA 30332, USA
| | - Todd C McDevitt
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology & Emory University, 315 Ferst Drive, Atlanta, GA 30332, USA; The Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, 315 Ferst Drive, Atlanta, GA 30332, USA.
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18
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Sakiyama-Elbert SE. Incorporation of heparin into biomaterials. Acta Biomater 2014; 10:1581-7. [PMID: 24021232 DOI: 10.1016/j.actbio.2013.08.045] [Citation(s) in RCA: 129] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/27/2013] [Accepted: 08/29/2013] [Indexed: 11/30/2022]
Abstract
This review provides an overview of the incorporation of heparin into biomaterials with a focus on drug delivery and the use of heparin-based biomaterials for self-assembly of polymer networks. Heparin conjugation to biomaterials was originally explored to reduce the thrombogenicity of materials in contact with blood. Many of the conjugation strategies that were developed for these applications are still popular today for other applications. More recently heparin has been conjugated to biomaterials for drug delivery applications. Many of the delivery approaches have taken advantage of the ability of heparin to bind to a wide variety of growth factors, protecting them from degradation and potentiating interactions with cell surface receptors. More recently, the use of heparin as a base polymer for scaffold fabrication has also been explored, often utilizing non-covalent binding of heparin with peptides or proteins to promote self-assembly of hydrogel networks. This review will highlight recent advances in each of these areas.
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Affiliation(s)
- Shelly E Sakiyama-Elbert
- Department of Biomedical Engineering, Washington University, 1 Brookings Drive, Campus Box 1097, St Louis, MO 63130, USA.
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19
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Vasita R, Katti DS. Growth factor-delivery systems for tissue engineering: a materials perspective. Expert Rev Med Devices 2014; 3:29-47. [PMID: 16359251 DOI: 10.1586/17434440.3.1.29] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The transplantation of organs, their surgical reconstruction or implantation of synthetic devices that can perform the function of organs, are the currently available methods for treating loss of tissue/organs in humans. However, the limitations associated with these techniques have led to the development of tissue engineering. One of the primary goals of tissue engineering is to provide growth factor delivery systems that can induce desired cell responses both in vitro and in vivo, in order to cause accelerated tissue regeneration. To make growth factors a more therapeutically viable alternative for the treatment of chronic degenerative diseases, a wide range of natural and synthetic materials have been employed as vehicles for their controlled delivery. The choice of material and design of the carrier device influence the mode of immobilization of growth factors on the scaffolds and their local/systemic administration. From a tissue engineer's perspective, materials could be used for designing scaffolds as well as for delivering single or multiple growth factors. Therefore, this review discusses growth factor delivery systems, with particular reference to carrier-based growth factor delivery systems with a focus on materials.
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Affiliation(s)
- Rajesh Vasita
- Indian Institute of Technology - Kanpur, Department of Biological Sciences and Bioengineering, Kanpur-208016, Uttar-Pradesh, India.
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20
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Sustained Growth Factor Delivery in Tissue Engineering Applications. Ann Biomed Eng 2013; 42:1528-36. [DOI: 10.1007/s10439-013-0956-6] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2013] [Accepted: 11/29/2013] [Indexed: 12/24/2022]
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21
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Kim AK, Kim MH, Kim BS, Kim DI. Long-term Angiogenesis Efficacy Using a Heparin-Conjugated Fibrin (HCF) Delivery System with HBM-MSCs. Int J Stem Cells 2013; 5:23-30. [PMID: 24298352 DOI: 10.15283/ijsc.2012.5.1.23] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2012] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Heparin-conjugated fibrin (HCF) is suitable for the release and localization of bFGF. We analyzed the effects of a bFGF delivery system using HCF with human bone marrow-derived mesenchymal stem cells (HBM- MSCs) in a dog ischemic limb model. METHODS AND RESULTS Animals were divided into HBM-MSCs, HBM-MSCs+HCF, bFGF-HCF, and HBM-MSCs+ bFGF-HCF groups. A total of 1×10(7) HBM-MSCs were injected per animal, and the amount of bFGF was 1 mg per dog. Ischemic muscles were harvested at eight weeks and six months after injection of cells. The HBM-MSCs+ bFGF-HCF group exhibited decreased proportions of capillaries and arterioles six months after transplantation. However, there were more cells positive for the angiogenic factors, VEGF and PDGF, in the eight-week specimens compared with those harvested six months after transplantation. CONCLUSIONS Our results demonstrated that a single injection of HBM-MSCs did not have significant long-term angiogenic effects; however, a bFGF delivery system using HCF exerted prolonged angiogenic effects when combined with HBM-MSCs.
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Affiliation(s)
- Ae-Kyeong Kim
- Division of Vascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine
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22
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Hannink G, Geutjes PJ, Daamen WF, Buma P. Evaluation of collagen/heparin coated TCP/HA granules for long-term delivery of BMP-2. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:325-332. [PMID: 23135410 DOI: 10.1007/s10856-012-4802-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 10/19/2012] [Indexed: 06/01/2023]
Abstract
Bone morphogenetic proteins (BMPs) are the most potent osteoinductive growth factors. However, a delivery system is essential to take advantage of the osteoinductive effect of BMPs. The purpose of this study was to develop a sustained delivery system for recombinant human bone morphogenetic protein-2 (BMP-2). We covalently attached heparin to a cross-linked collagen type I coated tricalciumphosphate/hydroxyapatite (TCP/HA) bone substitute and subsequently loaded it with BMP-2. To systematically evaluate the contribution of each component with respect to the binding and release of BMP-2, six constructs were prepared and characterized: TCP/HA, TCP/HA with collagen (TCP/HACol), and TCP/HA with collagen and heparin (TCP/HAColHep) with and without BMP-2 (B). More BMP-2 bound to the TCP/HAColHep + B (92.9 ± 4.8 ng BMP-2/mg granule) granules as compared to the TCP/HACol + B (69.0 ± 9.6 ng BMP-2/mg granule) and TCP/HA + B granules (62.9 ± 5.4 ng BMP-2/mg granule). No difference in release pattern was found between the TCP/HA + B and TCP/HACol + B granules. Up to day 14, BMP-2 was still bound to the TCP/HAColHep + B granules, whereas most BMP had been released from TCP/HACol + B and TCP/HA + B granules at that time. After 21 days most BMP-2 also had been released from the TCP/HAColHep + B granules. The local and sustained delivery system for BMP-2 developed in this study may be useful as a carrier for BMP-2 and could possibly enhance bone regeneration efficacy for the treatment of large bone defects.
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Affiliation(s)
- Gerjon Hannink
- Orthopedic Research Laboratory, Department of Orthopedics, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands.
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23
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24
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Hydrogels from Biopolymer Hybrid for Biomedical, Food, and Functional Food Applications. Polymers (Basel) 2012. [DOI: 10.3390/polym4020997] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Princz MA, Sheardown H. Heparin-modified dendrimer cross-linked collagen matrices for the delivery of basic fibroblast growth factor (FGF-2). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2012; 19:1201-18. [DOI: 10.1163/156856208785540181] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- M. A. Princz
- a Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, ON, Canada L8S 4L8
| | - H. Sheardown
- b Department of Chemical Engineering, McMaster University, 1280 Main St. W., Hamilton, ON, Canada L8S 4L8
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26
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Amsden BG. Delivery approaches for angiogenic growth factors in the treatment of ischemic conditions. Expert Opin Drug Deliv 2011; 8:873-90. [DOI: 10.1517/17425247.2011.577412] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Macdonald ML, Rodriguez NM, Shah NJ, Hammond PT. Characterization of tunable FGF-2 releasing polyelectrolyte multilayers. Biomacromolecules 2010; 11:2053-9. [PMID: 20690713 DOI: 10.1021/bm100413w] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Fibroblast growth factor 2 (FGF-2) is a potent mediator of stem cell differentiation and proliferation. Although FGF-2 has a well-established role in promoting bone tissue formation, flaws in its delivery have limited its clinical utility. Polyelectrolyte multilayer films represent a novel system for FGF-2 delivery that has promise for local, precisely controlled, and sustained release of FGF-2 from surfaces of interest, including medical implants and tissue engineering scaffolds. In this work, the loading and release of FGF-2 from synthetic hydrolytically degradable multilayer thin films of various architectures is explored; drug loading was tunable using at least three parameters (number of nanolayers, counterpolyanion, and type of degradable polycation) and yielded values of 7-45 ng/cm(2) of FGF-2. Release time varied between 24 h and approximately five days. FGF-2 released from these films retained in vitro activity, promoting the proliferation of MC3T3 preosteoblast cells. The use of biologically derived counterpolyanions heparin sulfate and chondroitin sulfate in the multilayer structures enhanced FGF-2 activity. The control over drug loading and release kinetics inform future in vivo bone and tissue regeneration models for the exploration of clinical relevance of LbL growth factor delivery films.
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Affiliation(s)
- Mara L Macdonald
- Harvard MIT Division of Health Sciences and Technology and Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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28
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Sy JC, Davis ME. Delivering regenerative cues to the heart: cardiac drug delivery by microspheres and peptide nanofibers. J Cardiovasc Transl Res 2010; 3:461-8. [PMID: 20628908 DOI: 10.1007/s12265-010-9210-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Accepted: 07/02/2010] [Indexed: 12/18/2022]
Abstract
Our understanding of signaling pathways and cues vital for cardiac regeneration is being refined by laboratories worldwide. As various mechanisms enabling cardiac regeneration are becoming elucidated, delivery vehicles suited for these potential therapeutics must also be developed. This review focuses on advances in two technologies, novel degradable microspheres for controlled release systems and self-assembling peptide nanofibers for cell and factor delivery. Polyketals, a new class of resorbable polymers, are well suited for treating inflammatory diseases due to biocompatible degradation products. Polyketals have been used to deliver small molecule inhibitors and antioxidant proteins to rat models of myocardial infarction with notable improvements in cardiac function. Self-assembling peptide nanofibers are a class of hydrogels that are well-defined scaffolds made up of 99% water and amenable to incorporation of a variety of bioactive cues. Work done by our laboratory and others have demonstrated functional improvements using these hydrogels as both a drug delivery vehicle for proteins as well as a defined microenvironment for transplanted cells. Combining non-inflammatory polymer microspheres for sustained release of drugs with self-assembling nanofibers yields multifunctional scaffolds that may soon drive the body's healing response following myocardial infarction towards cardiac regeneration.
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Affiliation(s)
- Jay C Sy
- The Wallace H. Coulter Department of Biomedical Engineering, Emory University and Georgia Institute of Technology, 101 Woodruff Circle, Suite 2001, Atlanta, GA 30322, USA
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Jiang T, Khan Y, Nair LS, Abdel-Fattah WI, Laurencin CT. Functionalization of chitosan/poly(lactic acid-glycolic acid) sintered microsphere scaffolds via surface heparinization for bone tissue engineering. J Biomed Mater Res A 2010; 93:1193-208. [PMID: 19777575 DOI: 10.1002/jbm.a.32615] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Scaffolds exhibiting biological recognition and specificity play an important role in tissue engineering and regenerative medicine. The bioactivity of scaffolds in turn influences, directs, or manipulates cellular responses. In this study, chitosan/poly(lactic acid-co-glycolic acid) (chitosan/PLAGA) sintered microsphere scaffolds were functionalized via heparin immobilization. Heparin was successfully immobilized on chitosan/PLAGA scaffolds with controllable loading efficiency. Mechanical testing showed that heparinization of chitosan/PLAGA scaffolds did not significantly alter the mechanical properties and porous structures. In addition, the heparinized chitosan/PLAGA scaffolds possessed a compressive modulus of 403.98 +/- 19.53 MPa and a compressive strength of 9.83 +/- 0.94 MPa, which are in the range of human trabecular bone. Furthermore, the heparinized chitosan/PLAGA scaffolds had an interconnected porous structure with a total pore volume of 30.93 +/- 0.90% and a median pore size of 172.33 +/- 5.89 mum. The effect of immobilized heparin on osteoblast-like MC3T3-E1 cell growth was investigated. MC3T3-E1 cells proliferated three dimensionally throughout the porous structure of the scaffolds. Heparinized chitosan/PLAGA scaffolds with low heparin loading (1.7 microg/scaffold) were shown to be capable of stimulating MC3T3-E1 cell proliferation by MTS assay and cell differentiation as evidenced by elevated osteocalcin expression when compared with nonheparinized chitosan/PLAGA scaffold and chitosan/PLAGA scaffold with high heparin loading (14.1 microg/scaffold). This study demonstrated the potential of functionalizing chitosan/PLAGA scaffolds via heparinization with improved cell functions for bone tissue engineering applications.
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Affiliation(s)
- Tao Jiang
- Department of Chemical Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
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Huang XB, Suo JP, Chen CY, Du QL, Shen JY, Zhou JL. Initial studies on a novel filtering-type intra-vas device in male dogs. Contraception 2010; 81:350-4. [PMID: 20227554 DOI: 10.1016/j.contraception.2009.10.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 10/14/2009] [Accepted: 10/28/2009] [Indexed: 10/19/2022]
Abstract
BACKGROUND To relieve the side effects induced by the complete obstruction of the vas deferens, we created a filtering-type intra-vas device (IVD) which is made of materials composed of nano-SiO(2)-copper complex cross-linking polymer composites. STUDY DESIGN Eight male beagle dogs were grouped into nonimplanted control group and IVD-implanted group. We tested the efficacy of the sperm filtering effect of the new IVD material for 12 months and examined the influence of the IVD materials on the cells of the vas deferens, epididymis and testis. RESULTS The densities of sperm were reduced significantly after the IVD was implanted; no motile sperm were found after the third month. No obvious morphological changes were found in the cells of the vas deferens, epididymis and testis in the IVD-implanted group. CONCLUSIONS The filtering-type nano-SiO(2)-copper complex/polymer composite IVD is able to filter the sperm of the male dogs, and the IVD material did not cause obvious damage to the cells of the male reproductive organs after 1 year of implantation.
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Affiliation(s)
- Xun-bin Huang
- Family Planning Research Institute, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, PR China.
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Freudenberg U, Hermann A, Welzel PB, Stirl K, Schwarz SC, Grimmer M, Zieris A, Panyanuwat W, Zschoche S, Meinhold D, Storch A, Werner C. A star-PEG–heparin hydrogel platform to aid cell replacement therapies for neurodegenerative diseases. Biomaterials 2009; 30:5049-60. [DOI: 10.1016/j.biomaterials.2009.06.002] [Citation(s) in RCA: 205] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2009] [Accepted: 06/02/2009] [Indexed: 02/06/2023]
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Spadaccio C, Chello M, Trombetta M, Rainer A, Toyoda Y, Genovese JA. Drug releasing systems in cardiovascular tissue engineering. J Cell Mol Med 2009; 13:422-39. [PMID: 19379142 PMCID: PMC3822506 DOI: 10.1111/j.1582-4934.2008.00532.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Heart disease and atherosclerosis are the leading causes of morbidity and mortality worldwide. The lack of suitable autologous grafts has produced a need for artificial grafts; however, current artificial grafts carry significant limitations, including thrombosis, infection, limited durability and the inability to grow. Tissue engineering of blood vessels, cardiovascular structures and whole organs is a promising approach for creating replacement tissues to repair congenital defects and/or diseased tissues. In an attempt to surmount the shortcomings of artificial grafts, tissue-engineered cardiovascular graft (TECVG), constructs obtained using cultured autologous vascular cells seeded onto a synthetic biodegradable polymer scaffold, have been developed. Autologous TECVGs have the potential advantages of growth, durability, resistance to infection, and freedom from problems of rejection, thrombogenicity and donor scarcity. Moreover polymers engrafted with growth factors, cytokines, drugs have been developed allowing drug-releasing systems capable of focused and localized delivery of molecules depending on the environmental requirements and the milieu in which the scaffold is placed. A broad range of applications for compound-releasing, tissue-engineered grafts have been suggested ranging from drug delivery to gene therapy. This review will describe advances in the development of drug-delivery systems for cardiovascular applications focusing on the manufacturing techniques and on the compounds delivered by these systems to date.
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Affiliation(s)
- Cristiano Spadaccio
- Cardiac and Molecular Biology Laboratory, Heart, Lung & Esophageal Surgery Institute University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Park CJ, Clark SG, Lichtensteiger CA, Jamison RD, Johnson AJW. Accelerated wound closure of pressure ulcers in aged mice by chitosan scaffolds with and without bFGF. Acta Biomater 2009; 5:1926-36. [PMID: 19342320 DOI: 10.1016/j.actbio.2009.03.002] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2009] [Revised: 02/21/2009] [Accepted: 03/02/2009] [Indexed: 11/18/2022]
Abstract
Pressure ulcers are a significant healthcare concern, especially for elderly populations. Our work served to ameliorate the chronicity of these ulcers by addressing ischemia-reperfusion injury mediated by neutrophils and the concomitant loss of vasculature in these wounds. To this end, chitosan scaffolds loaded with basic fibroblast growth factor (bFGF) contained in gelatin microparticles were developed and tested for clinical relevance in an aged mouse model. Pressure ulcers were induced in aged mice, and efficacy of treatment was assessed. On days 3 and 7, both chitosan and chitosan-bFGF scaffolds significantly accelerated wound closure compared to gauze control. By day 10, all wounds achieved similar closure. Delivery and angiogenic function of bFGF was verified through ELISA and histology. Elevated neutrophil levels were observed in chitosan and chitosan-bFGF groups. Since neutrophil elastase contributes to the proteolytic environments of pressure ulcers, the effect of chitosan on elastase was assessed. In vitro, chitosan inhibited elastase activity. In vivo, elastase protein levels in wounds were reduced with chitosan-bFGF scaffolds by day 10. These results suggest that chitosan is an effective material for growth factor delivery and can help to heal chronic ulcers. Collectively, our data show that chitosan-bFGF scaffolds are effective in accelerating wound closure of pressure ulcers in aged animals.
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Affiliation(s)
- Chan J Park
- Department of Materials Science & Engineering, University of Illinois at Urbana-Champaign, 61801, USA
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34
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Li J, Suo J, Huang X, Jia L. Study on a novel copper-containing composite for contraception. Contraception 2009; 79:439-44. [DOI: 10.1016/j.contraception.2009.01.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 12/31/2008] [Accepted: 01/04/2009] [Indexed: 11/28/2022]
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Abstract
Artificial ECMs that not only closely mimic the hybrid nature of the natural ECM but also provide tunable material properties and enhanced biological functions are attractive candidates for tissue engineering applications. This review summarizes recent advances in developing multicomponent hybrid hydrogels by integrating modular and heterogeneous building blocks into well-defined, multifunctional hydrogel composites. The individual building blocks can be chemically, morphologically, and functionally diverse, and the hybridization can occur at molecular level or microscopic scale. The modular nature of the designs, combined with the potential synergistic effects of the hybrid systems, has resulted in novel hydrogel matrices with robust structure and defined functions.
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Affiliation(s)
- Xinqiao Jia
- Department of Materials Science and Engineering, Delaware Biotechnology Institute, University of Delaware, Newark, Delaware 19716, USA.
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Huang M, Berkland C. Controlled release of repifermin from polyelectrolyte complexes stimulates endothelial cell proliferation. J Pharm Sci 2009; 98:268-80. [PMID: 18425807 PMCID: PMC4126262 DOI: 10.1002/jps.21412] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The therapeutic value of many growth factors is often hindered by the narrow therapeutic index and sustained concentrations required for efficacy. Controlled release approaches provide a valuable tool to achieve these goals; however, growth factor stability must be maintained. Repifermin is a truncated form of fibroblast growth factor-10, also known as keratinocyte growth factor-2, that exhibits promise in wound healing applications; however, controlled release formulation presents a challenge for this labile protein. Taking advantage of the heparin-binding motif of this class of biopharmaceuticals, Repifermin was effectively stabilized and packaged in polyelectrolyte complexes. In the presence of dextran sulfate, the unfolding temperature of this growth factor was increased by approximately 10 degrees C as confirmed by a variety of spectroscopic techniques. Dextran sulfate with bound Repifermin was then complexed with several polycations (chitosan, poly-L-lysine, and polyethylenimine) resulting in the formation of approximately 250 nm polyelectrolyte complexes that entrapped the protein with approximately 70-80% efficiency. Release was controlled for more than 10 days and the mitogenic activity of Repifermin on human umbilical cord vascular endothelial cells was significantly enhanced, whereas no effect was noted for free Repifermin.
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Affiliation(s)
- Min Huang
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS 66047
| | - Cory Berkland
- Department of Pharmaceutical Chemistry, The University of Kansas, Lawrence, KS 66047
- Department of Chemical and Petroleum Engineering, The University of Kansas, Lawrence, KS 66047
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37
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A study of diffusion in poly(ethyleneglycol)-gelatin based semi-interpenetrating networks for use in wound healing. Polym Bull (Berl) 2008; 62. [PMID: 24311827 DOI: 10.1007/s00289-008-0023-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Semi-interpenetrating networks (sIPNs) designed to mimic extracellular matrix via covalent crosslinking of poly(ethylene glycol) diacrylate in the presence of gelatin have been shown to aid in wound healing, particularly when loaded with soluble factors. Ideal systems for tissue repair permit an effective release of therapeutic agents and flow of nutrients to proliferating cells. Appropriate network characterization can, consequently, be used to convey an understanding of the mass transfer kinetics necessary for materials to aid in the wound healing process. Solute transport from and through sIPNs has not yet been thoroughly evaluated. In the current study, the diffusivity of growth factors and nutrients through the polymeric system was determined. Transport of keratinocyte growth factor was modeled by treating the sIPN as a plane sheet into which the protein was loaded. The diffusion coefficient was determined to be 4.86 × 10-9 ± 1.86 × 10-12 cm2/s. Glucose transport was modeled as flow through a semi-permeable membrane. Using lag-time analysis, the diffusion coefficient was calculated to be 2.25 × 10-6 ± 1.98 × 10-7 cm2/s. The results were evaluated in conjunction with previous studies on controlled drug release from sIPNs. As expected from Einstein-Stokes equation, diffusivity decreased as molecular size increased. The results offer insight into the structure-function design paradigm and show that release from the polymeric system is diffusion controlled, rather than dissolution controlled.
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38
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Katav T, Liu L, Traitel T, Goldbart R, Wolfson M, Kost J. Modified pectin-based carrier for gene delivery: cellular barriers in gene delivery course. J Control Release 2008; 130:183-91. [PMID: 18585414 DOI: 10.1016/j.jconrel.2008.06.002] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2008] [Revised: 05/29/2008] [Accepted: 06/02/2008] [Indexed: 11/24/2022]
Abstract
The use of polysaccharides as DNA carriers has high potential for gene therapy applications. Pectin is a structural plant polysaccharide heterogeneous with respect to its chemical structure. It contains branches rich in galactose residues which serve as potential ligands for membrane receptors interaction. In order to make the anionic pectin applicable for DNA complexation, it was modified with three different amine groups (cationic). Pectin-NH2 was prepared by modifying the galacturonic acids carboxyl groups with primary amine groups and further modified to generate pectin-T (T=N+H(CH3)(2)) and pectin-NH2-Q (Q=N+(CH3)(3)). All three modified pectins formed complexes with plasmid DNA as indicated by gel electrophoresis analysis. The size and morphology of pectin-NH2/DNA complexes were examined by transmission electron microscopy (TEM). Transfection experiments were carried out with human embryonic kidney cell lines (HEK293), using plasmid DNA encoding for green fluorescence protein (GFP). Transfection efficiency was analyzed by flow cytometry analysis, using FACS. Pectin-NH2-Q was the most efficient carrier. Addition of chloroquine ("lysosomotropic" agent) to transfection medium substantially enhanced the HEK293 transfection, indicating that endocytosis is the preferable internalization pathway and implies on the complex inability to escape the endosome. Pectin's galactose residues contribution to transfection was examined by inhibiting pectin binding to membrane receptors (galectins), using galactose and lactose as competitive inhibitors to this interaction. Resulting reduction of transfection efficiency demonstrated the importance of pectin's galactose residues to HEK293 transfection. Suggesting the modified pectin is a promising non-viral carrier for targeted gene delivery to cancer cells with galactose-binding lectins on their surface.
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Affiliation(s)
- Tali Katav
- Department of Chemical Engineering, Ben-Gurion University, Beer-Sheva 84105, Israel
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39
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Kiick KL. Peptide- and protein-mediated assembly of heparinized hydrogels. SOFT MATTER 2008; 4:29-37. [PMID: 19960073 PMCID: PMC2787454 DOI: 10.1039/b711319f] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Polymeric hydrogels have demonstrated significant promise in biomedical applications such as drug delivery and tissue engineering. A continued direction in hydrogel development includes the engineering of the biological responsiveness of these materials, via the inclusion of cell-binding domains and enzyme-sensitive domains. Ligand-receptor interactions offer additional opportunities in the design of responsive hydrogels, and strategies employing protein- polysaccharide interactions as a target may have unique relevance to materials intended to mimic the extracellular matrix (ECM). Accordingly, we have developed approaches for producing hydrogels via noncovalent interactions between heparin and heparin-binding peptides/proteins, and have demonstrated that such matrices are capable of both passive and receptor-mediated growth factor delivery. Further modification of these materials via the integration of these noncovalent strategies with chemical crosslinking methods will expand the range of their potential use and is under exploration. The combination of these approaches offers broad opportunities for the production of responsive matrices for biomedical applications.
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Affiliation(s)
- Kristi L Kiick
- University of Delaware, Department of Materials Science & Engineering, 201 DuPont Hall, Newark, DE 19716 and the Delaware Biotechnology Institute, 15 Innovation Way, Newark DE 19711, USA
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40
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Synthesis, characterization and chondroprotective properties of a hyaluronan thioethyl ether derivative. Biomaterials 2007; 29:1388-99. [PMID: 18158182 DOI: 10.1016/j.biomaterials.2007.12.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2007] [Accepted: 12/05/2007] [Indexed: 11/27/2022]
Abstract
Hyaluronan (HA), a non-sulfated glycosaminoglycan, is widely used in the clinic for viscosurgery, viscosupplementation, and treatment of osteoarthritis. Four decades of chemical modifications of HA have generated derivatives in which the biophysical and biochemical properties, as well as the rates of enzymatic degradation in vivo have been manipulated and tailored for specific clinical needs. One earlier modification adds multiple thiol groups to HA through hydrazide linkages, leading to a readily crosslinkable material for adhesion prevention and wound healing. We now describe the synthesis and chemical characterization of a novel thioethyl ether derivative of HA, HA-sulfhydryl (HASH), with a minimal tether between the HA and the thiol group. Unlike earlier thiol-modified HA derivatives, HASH cannot be readily crosslinked to form a hydrogel using either oxidative or bivalent electrophilic conditions, thus offering a unique polymeric polythiol that remains soluble. Moreover, HASH showed no cytotoxicity towards primary human fibroblasts and reduced the apoptosis rates of primary chondrocytes exposed to hydrogen peroxide in vitro. These properties foreshadow the clinical potential of HASH to moderate inflammation and to act as a chondroprotective agent in vivo.
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41
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Yoon JJ, Chung HJ, Park TG. Photo-crosslinkable and biodegradable Pluronic/heparin hydrogels for local and sustained delivery of angiogenic growth factor. J Biomed Mater Res A 2007; 83:597-605. [PMID: 17503533 DOI: 10.1002/jbm.a.31271] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Photo-crosslinkable and biodegradable Pluronic/heparin composite hydrogels were fabricated for local and sustained delivery of basic fibroblast growth factor (bFGF) to induce angiogenesis. Terminally di-acrylated Pluronic F127 and vinyl group conjugated heparin were used as a mixed macromer precursor solution to prepare a photo-crosslinkable hydrogel. An aqueous solution containing the two macromers with different weight ratios was photo-crosslinked in the presence of bFGF to produce in situ formed bFGF loaded Pluronic/heparin hydrogels. Swelling, mass erosion, bFGF release characteristics of Pluronic/heparin hydrogels were thoroughly examined by varying the weight ratio of the two macromers. The incorporation of heparin in the composite hydrogel enabled the controlled release of bFGF over a one month period in a near zero order manner. The prolonged release of bFGF could be attributed to the specific interaction between bFGF and heparin in the hydrogel matrices. The released bFGF fraction from the degradable hydrogels also showed sufficient proliferation activity of human umbilical vein endothelial cell (HUVEC). When the Pluronic/heparin hydrogels were implanted in vivo, a significant extent of neo-vascularization was observed.
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Affiliation(s)
- Jun Jin Yoon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejon 305-701, South Korea
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42
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Ishii I, Mizuta H, Sei A, Hirose J, Kudo S, Hiraki Y. Healing of full-thickness defects of the articular cartilage in rabbits using fibroblast growth factor-2 and a fibrin sealant. ACTA ACUST UNITED AC 2007; 89:693-700. [PMID: 17540759 DOI: 10.1302/0301-620x.89b5.18450] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
We have investigated in vitro the release kinetics and bioactivity of fibroblast growth factor-2 (FGF-2) released from a carrier of fibrin sealant. In order to evaluate the effects of the FGF-2 delivery mechanism on the repair of articular cartilage, full-thickness cylindrical defects, 5 mm in diameter and 4 mm in depth, which were too large to undergo spontaneous repair, were created in the femoral trochlea of rabbit knees. These defects were then filled with the sealant. Approximately 50% of the FGF-2 was released from the sealant within 24 hours while its original bioactivity was maintained. The implantation of the fibrin sealant incorporating FGF-2 successfully induced healing of the surface with hyaline cartilage and concomitant repair of the subchondral bone at eight weeks after the creation of the defect. Our findings suggest that this delivery method for FGF-2 may be useful for promoting regenerative repair of full-thickness defects of articular cartilage in humans.
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Affiliation(s)
- I Ishii
- Department of Orthopaedic and Neuromusculoskeletal Surgery, Faculty of Medical and Pharmaceutical Sciences, Kumamoto University, 1-1-1 Honjo, Kumamoto 860-8556, Japan
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43
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Liu Y, Cai S, Shu XZ, Shelby J, Prestwich GD. Release of basic fibroblast growth factor from a crosslinked glycosaminoglycan hydrogel promotes wound healing. Wound Repair Regen 2007; 15:245-51. [PMID: 17352757 DOI: 10.1111/j.1524-475x.2007.00211.x] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We describe synthetic extracellular matrix (sECM) hydrogel films composed of co-crosslinked thiolated derivatives of chondroitin 6-sulfate (CS) and heparin (HP) for controlled-release delivery of basic fibroblast growth factor (bFGF) to full-thickness wounds in genetically diabetic (db/db) mice. In this model for chronic wound repair, full-thickness wounds were treated with CS, CS-bFGF, or CS-HP-bFGF films. At 2 and 4 weeks postinjury, wound closure and formation of the new epidermis and dermis were determined. Both CS and CS-HP hydrogel films accelerated wound repair, even without bFGF. Addition of bFGF to CS films showed partial dose-dependent acceleration of wound repair. Importantly, addition of bFGF to co-crosslinked CS-HP sECM films showed a dramatic bFGF dose-dependent acceleration of wound healing, as well as improved dermis formation and vascularization. Compared with 27% wound closure in 2 weeks in the controls, 89% wound closure was observed for mice treated with the CS-HP-bFGF films. The synthetic CS-HP sECM films mimic the chemistry and biology of heparan sulfate proteoglycans, and may have clinical potential for topical delivery of growth factors to patients with compromised wound healing.
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Affiliation(s)
- Yanchun Liu
- Department of Medicinal Chemistry, The University of Utah, Salt Lake City, UT 84108, USA
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44
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Nie T, Baldwin A, Yamaguchi N, Kiick KL. Production of heparin-functionalized hydrogels for the development of responsive and controlled growth factor delivery systems. J Control Release 2007; 122:287-96. [PMID: 17582636 PMCID: PMC2668661 DOI: 10.1016/j.jconrel.2007.04.019] [Citation(s) in RCA: 166] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2007] [Accepted: 04/28/2007] [Indexed: 10/23/2022]
Abstract
Methods to assemble polymeric hydrogels on the basis of noncovalent protein-glycosaminoglycan interactions have been previously demonstrated by us and others and hold promise in the development of receptor-responsive hydrogel materials; improvements in the mechanical properties of such systems would broaden their utility. Thus, in situ crosslinkable and degradable heparin-containing hydrogels were designed for the binding and controlled release of growth factors. Specifically, maleimide-functionalized high molecular weight heparin (HMWH) was synthesized via straightforward chemical methods that permitted facile and controllable modification of carboxylates in HMWH with maleimide groups via control of catalyst and reaction conditions, as assessed via 1H NMR spectroscopy. These modified heparins were crosslinked into hydrogels via reaction with various thiol-functionalized PEGs. The gelation times and elastic moduli of the gels, as assessed through oscillatory rheometry, could be tuned by controlling the functionality of HMWH, the concentration of the hydrogel, the identity of the PEG-based crosslinker, as well as the molar ratio between maleimide and thiol groups. The capability of the hydrogels to bind to growth factors was investigated with immunochemical assays. Preliminary studies indicate the controlled release of basic fibroblast growth factor (bFGF) from these materials and suggest their broader use in the design of responsive materials.
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Affiliation(s)
- Ting Nie
- Department of Materials Science and Engineering, 201 DuPont Hall, University of Delaware, Newark, DE 19716, United States
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45
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Jeon O, Song SJ, Kang SW, Putnam AJ, Kim BS. Enhancement of ectopic bone formation by bone morphogenetic protein-2 released from a heparin-conjugated poly(L-lactic-co-glycolic acid) scaffold. Biomaterials 2007; 28:2763-71. [PMID: 17350678 DOI: 10.1016/j.biomaterials.2007.02.023] [Citation(s) in RCA: 223] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2006] [Accepted: 02/16/2007] [Indexed: 11/18/2022]
Abstract
In this study, a heparin-conjugated poly(l-lactic-co-glycolic acid) (HP-PLGA) scaffold was developed for the sustained delivery of bone morphogenetic protein-2 (BMP-2), and then used to address the hypothesis that BMP-2 delivered from this scaffold could enhance ectopic bone formation. We found the amount of heparin conjugated to the PLGA scaffolds could be increased up to 3.2-fold by using scaffolds made from star-shaped PLGA, as compared to scaffolds made from linear PLGA, and that the release of BMP-2 from the HP-PLGA scaffold was sustained for at least 14 days in vitro. The BMP-2 released from the HP-PLGA scaffold stimulated an increase in alkaline phosphatase (ALP) activity of osteoblasts for 14 days in vitro, suggesting that the HP-PLGA scaffold delivery system releases BMP-2 in a bioactive form for a prolonged period. By contrast, BMP-2 release from unmodified (no heparin) PLGA scaffolds induced a transient increase in ALP activity for the first 3 days and a decrease thereafter. In vivo bone formation studies showed the BMP-2-loaded HP-PLGA scaffolds induced bone formation to a much greater extent than did either BMP-2-loaded unmodified PLGA scaffolds or unloaded (no BMP-2) HP-PLGA scaffolds, with 9-fold greater bone formation area and 4-fold greater calcium content in the BMP-2-loaded HP-PLGA scaffold group compared to the BMP-2-loaded unmodified PLGA scaffold group. Collectively, these results demonstrate that the HP-PLGA delivery system is capable of potentiating the osteogenic efficacy of BMP-2, and underscore its importance as a possible bone regeneration strategy.
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Affiliation(s)
- Oju Jeon
- Department of Chemical Engineering, Hanyang University, Sungdong-Gu, Seoul, Korea
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46
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Yoon JJ, Chung HJ, Lee HJ, Park TG. Heparin-immobilized biodegradable scaffolds for local and sustained release of angiogenic growth factor. J Biomed Mater Res A 2006; 79:934-42. [PMID: 16941589 DOI: 10.1002/jbm.a.30843] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Heparin-immobilized porous biodegradable scaffolds were fabricated to release basic fibroblast growth factor (bFGF) in a sustained manner. Heparin was covalently conjugated onto the surface of macroporous PLGA scaffolds fabricated by a gas-foaming/salt-leaching method. Sustained release of bFGF was successfully achieved for over 20 days due to high affinity of bFGF onto the immobilized heparin. It appears that bFGF release rate was regulated by the specific interaction between bFGF and heparin. The bFGF fraction released from the scaffolds maintained its bioactivity, as judged from determining the proliferation extent of human umbilical vein endothelial cells (HUVECs) in vitro. When heparin-immobilized scaffolds loaded with bFGF were implanted subcutaneously in vivo, they effectively induced the formation of blood vessels in the vicinity of the implant site. This study demonstrated that local and sustained delivery of angiogenic growth factor for tissue regeneration could be achieved by surface modification of porous scaffolds with heparin.
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Affiliation(s)
- Jun Jin Yoon
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejon 305-701, South Korea
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47
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Schmidt MB, Chen EH, Lynch SE. A review of the effects of insulin-like growth factor and platelet derived growth factor on in vivo cartilage healing and repair. Osteoarthritis Cartilage 2006; 14:403-12. [PMID: 16413799 DOI: 10.1016/j.joca.2005.10.011] [Citation(s) in RCA: 259] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2005] [Accepted: 10/27/2005] [Indexed: 02/02/2023]
Abstract
Growth factors may enhance current cartilage repair techniques via multiple mechanisms including recruitment of chondrogenic cells (chemotaxis), stimulation of chondrogenic cell proliferation (mitogenesis) and enhancement of cartilage matrix synthesis. Two growth factors that have been studied in cartilage repair are insulin-like growth factor (IGF) and platelet derived growth factor (PDGF). IGF plays a key role in cartilage homeostasis, balancing proteoglycan synthesis and breakdown. Incorporating IGF into a fibrin clot placed in an equine cartilage defect improved the quality and quantity of repair tissue and reduced synovial inflammation. PDGF is a potent mitogenic and chemotactic factor for all cells of mesenchymal origin, including chondrocytes and mesenchymal stem cells. Resting zone chondrocytes cultured with PDGF demonstrated increased cell proliferation and proteoglycan production, while maturation of these cells along the endochondral pathway was inhibited. Pretreating chondrocytes with PDGF promotes heterotopic cartilage formation in the absence of any mechanical stimulus. PDGF has also been shown to be a potent stimulator of meniscal cell proliferation and migration. These studies and others suggest a potential role for these potent biological regulators of chondrocytes in cartilage repair. More work needs to be performed to define their appropriate dosing and the optimum delivery method. Combining tissue growth factors with a biological matrix can provide a physical scaffold for cell adhesion and growth as well as a means to control the release of these potent molecules. This could result in biological devices that enhance the predictability and quality of current cartilage repair techniques.
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Affiliation(s)
- M B Schmidt
- Schmidt Technical Consulting, LLC, 7 Amberg Drive, Pomfret Center, CT 06259, USA.
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48
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Mi FL, Shyu SS, Peng CK, Wu YB, Sung HW, Wang PS, Huang CC. Fabrication of chondroitin sulfate-chitosan composite artificial extracellular matrix for stabilization of fibroblast growth factor. J Biomed Mater Res A 2006; 76:1-15. [PMID: 16224775 DOI: 10.1002/jbm.a.30298] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The development of a novel, three-dimensional, macroporous artificial extracellular matrix (AECM) based on chondroitin sulfate (ChS)-chitosan (Chito) combination is reported. The composite AECM composed of ChS-Chito conjugated network was prepared by a homogenizing interpolyelectrolyte complex/covalent conjugation technique through co-crosslinked with N,N-(3-dimethylaminopropyl)-N'-ethyl carbodiimide (EDC) and N-hydroxysuccinimide (NHS). In contrast to EDC/NHS, two different reagents, calcium ion and glutaraldehyde, were used to react with ChS or Chito for the preparation of ChS-Chito composites containing crosslinked ChS or Chito network in the matrix. The stability and in vitro enzymatic degradability of the glutaraldehyde-, EDC/NHS-, and Ca2+ -crosslinked ChS-Chito composite AECMs were all investigated in this study. The results showed that crosslinking improved the stability of prepared ChS-Chito AECMs in physiological buffer solution (PBS) and provided superior protective effect against the enzymatic hydrolysis of ChS, compared with their non-crosslinked counterpart. Because ChS was a heparin-like glycosaminoglycan (GAG), the ChS-Chito composite AECMs appeared to promote binding efficiency for basic fibroblast growth factor (bFGF). The bFGF releasing from the ChS-Chito composite AECMs retained its biological activity as examined by the in vitro proliferation of human fibroblast, depending on the crosslinking mode for the preparation of these composite AECMs. Histological assay showed that the EDC/NHS-crosslinked ChS-Chito composite AECM, after incorporated with bFGF, was biodegradable and could result in a significantly enhanced vascularization effect and tissue penetration. These results suggest that the ChS-Chito composite AECMs fabricated in this study may be a promising approach for tissue-engineering application.
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Affiliation(s)
- Fwu-Long Mi
- Department of Applied Science, Chinese Naval Academy, 669 Jiun Shiaw Road, Kaohsiung, Taiwan 813, Republic of China
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Miyakoshi N, Kobayashi M, Nozaka K, Okada K, Shimada Y, Itoi E. Effects of intraarticular administration of basic fibroblast growth factor with hyaluronic acid on osteochondral defects of the knee in rabbits. Arch Orthop Trauma Surg 2005; 125:683-92. [PMID: 16189685 DOI: 10.1007/s00402-005-0052-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2004] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Growth factors including basic fibroblast growth factor (bFGF) are expected to be useful tools for enhancing osteochondral repair. However, suitable carriers are required to deliver a growth factor to the injury site. We evaluated the effects of intraarticular injection of bFGF with hyaluronic acid (HA) on osteochondral repair and the potential carrier role of HA in this treatment. MATERIALS AND METHODS Osteochondral defect was created in the medial femoral condyle of rabbits and received single or weekly intraarticular injection of bFGF (1 or 10 microg) with or without HA. Prior to the administration, bFGF was incubated with HA or vehicle-saline for 24 h at 4 degrees C. Four weeks after the initial injection, the animals were killed and the defect was evaluated grossly (12-point scale) and histologically (16-point scale). The effect of single injection of bFGF (1 microg) with HA was also compared to that of the carrier known as gelatin microspheres (GM) incorporating bFGF. RESULTS Weekly-administered bFGF alone induced undesirable side effects such as inflammatory responses and osteophyte formation. However, weekly-administered 1 mug of bFGF with HA yielded significantly better osteochondral repair than each treatment alone in gross and histological examinations with minimal side effects (P < 0.05). Single administration of 1 microg bFGF with HA but not GM incorporating bFGF showed significantly better osteochondral repair comparing to the vehicle control (P < 0.05). CONCLUSION Low-dose bFGF with HA was effective for osteochondral repair in rabbits. The significant osteochondral reparative role of bFGF with HA comparing with GM incorporating bFGF might be explained by the potential carrier role of HA and possible synergistic action between these two agents. The combination of HA with bFGF significantly suppressed the side effects resulting from single use of bFGF.
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Affiliation(s)
- Naohisa Miyakoshi
- Department of Orthopedic Surgery, Akita University School of Medicine, 1-1-1 Hondo, Akita 010-8543, Japan.
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Yamaguchi N, Chae BS, Zhang L, Kiick KL, Furst EM. Rheological characterization of polysaccharide-poly(ethylene glycol) star copolymer hydrogels. Biomacromolecules 2005; 6:1931-40. [PMID: 16004430 PMCID: PMC2621325 DOI: 10.1021/bm0500042] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Binding interactions between low molecular weight heparin (LMWH) and heparin-binding peptides (HBP) have been applied as a strategy for the assembly of hydrogels that are capable of sequestering growth factors and delivering them in a controlled manner. In this work, the assembly of four-arm star poly(ethylene glycol) (PEG)-LMWH conjugate with PEG-HBP conjugates has been investigated. The interactions between LMWH and the heparin-binding regions of antithrombin III (ATIII) or the heparin interacting protein (HIP) have been characterized via heparin affinity chromatography and surface plasmon resonance (SPR); results indicate that the two peptides have slightly different affinities for heparin and LMWH, and bind LMWH with micromolar affinity. Solutions of the PEG-LMWH and of mixtures of the PEG-LMWH and PEG-HBP were characterized via both bulk rheology and laser tweezer microrheology. Interestingly, solutions of PEG-LMWH (2.5 wt % in PBS) form hydrogels in the absence of PEG-ATIII or PEG-HIP, with storage moduli, determined via bulk rheological measurements, in excess of the loss moduli over frequencies of 0.1-100 Hz. The addition of PEG-ATIII or PEG-HIP increases the moduli in direct proportion to the number of cross-links introduced. Characterization of the hydrogels via microrheology shows the gel microstructure is composed of polymer-rich fibrillar structures surrounded by polymer-depleted buffer. Potential applications of these hydrogels are discussed.
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Affiliation(s)
| | | | | | | | - Eric M. Furst
- To whom correspondence should be addressed. Tel.: (302) 831-0102. Fax: (302) 831-1048. E-mail:
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