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Cruz DRD, Zheng A, Debele T, Larson P, Dion GR, Park YC. Drug delivery systems for wound healing treatment of upper airway injury. Expert Opin Drug Deliv 2024; 21:573-591. [PMID: 38588553 DOI: 10.1080/17425247.2024.2340653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 04/04/2024] [Indexed: 04/10/2024]
Abstract
INTRODUCTION Endotracheal intubation is a common procedure to maintain an open airway with risks for traumatic injury. Pathological changes resulting from intubation can cause upper airway complications, including vocal fold scarring, laryngotracheal stenosis, and granulomas and present with symptoms such as dysphonia, dysphagia, and dyspnea. Current intubation-related laryngotracheal injury treatment approaches lack standardized guidelines, relying on individual clinician experience, and surgical and medical interventions have limitations and carry risks. AREAS COVERED The clinical and preclinical therapeutics for wound healing in the upper airway are described. This review discusses the current developments on local drug delivery systems in the upper airway utilizing particle-based delivery systems, including nanoparticles and microparticles, and bulk-based delivery systems, encompassing hydrogels and polymer-based approaches. EXPERT OPINION Complex laryngotracheal diseases pose challenges for effective treatment, struggling due to the intricate anatomy, limited access, and recurrence. Symptomatic management often requires invasive surgical procedures or medications that are unable to achieve lasting effects. Recent advances in nanotechnology and biocompatible materials provide potential solutions, enabling precise drug delivery, personalization, and extended treatment efficacy. Combining these technologies could lead to groundbreaking treatments for upper airways diseases, significantly improving patients' quality of life. Research and innovation in this field are crucial for further advancements.
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Affiliation(s)
- Denzel Ryan D Cruz
- Medical Scientist Training Program, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
| | - Avery Zheng
- Chemical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
| | - Tilahun Debele
- Chemical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
| | - Peter Larson
- Department of Otolaryngology - Head and Neck Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Gregory R Dion
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
- Department of Otolaryngology - Head and Neck Surgery, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Yoonjee C Park
- Biomedical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
- Chemical Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
- Materials Science and Engineering Program, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, OH, USA
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Fotooh Abadi L, Kumar P, Paknikar K, Gajbhiye V, Kulkarni S. Tenofovir-tethered gold nanoparticles as a novel multifunctional long-acting anti-HIV therapy to overcome deficient drug delivery-: an in vivo proof of concept. J Nanobiotechnology 2023; 21:19. [PMID: 36658575 PMCID: PMC9850711 DOI: 10.1186/s12951-022-01750-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 12/20/2022] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND The adoption of Antiretroviral Therapy (ART) substantially extends the life expectancy and quality of HIV-infected patients. Yet, eliminating the latent reservoirs of HIV to achieve a cure remains an unmet need. The advent of nanomedicine has revolutionized the treatment of HIV/AIDS. The present study explores a unique combination of Tenofovir (TNF) with gold nanoparticles (AuNPs) as a potential therapeutic approach to overcome several limitations of the current ART. RESULTS TNF-tethered AuNPs were successfully synthesized. Cell viability, genotoxicity, haemolysis, and histopathological studies confirmed the complete safety of the preparation. Most importantly, its anti-HIV1 reverse transcriptase activity was ~ 15 folds higher than the native TNF. In addition, it exhibited potent anti-HIV1 protease activity, a much sought-after target in anti-HIV1 therapeutics. Finally, the in vivo biodistribution studies validated that the AuNPs could reach many tissues/organs, serving as a secure nest for HIV and overcoming the problem of deficient drug delivery to HIV reservoirs. CONCLUSIONS We show that the combination of TNF and AuNPs exhibits multifunctional activity, viz. anti-HIV1 and anti-HIV1 protease. These findings are being reported for the first time and highlight the prospects of developing AuNP-TNF as a novel next-generation platform to treat HIV/AIDS.
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Affiliation(s)
- Leila Fotooh Abadi
- grid.419119.50000 0004 1803 003XDivision of Virology, Indian Council of Medical Research-National AIDS Research Institute, Pune, 411 026 India
| | - Pramod Kumar
- grid.417727.00000 0001 0730 5817Nanobioscience Group, Agharkar Research Institute, Pune, 411 004 India
| | - Kishore Paknikar
- grid.417727.00000 0001 0730 5817Nanobioscience Group, Agharkar Research Institute, Pune, 411 004 India ,grid.417971.d0000 0001 2198 7527Department of Chemistry, Indian Institute of Technology, Mumbai, 400 076 India
| | - Virendra Gajbhiye
- grid.417727.00000 0001 0730 5817Nanobioscience Group, Agharkar Research Institute, Pune, 411 004 India
| | - Smita Kulkarni
- grid.419119.50000 0004 1803 003XDivision of Virology, Indian Council of Medical Research-National AIDS Research Institute, Pune, 411 026 India
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Lowen JM, Leach JK. Functionally graded biomaterials for use as model systems and replacement tissues. ADVANCED FUNCTIONAL MATERIALS 2020; 30:1909089. [PMID: 33456431 PMCID: PMC7810245 DOI: 10.1002/adfm.201909089] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Indexed: 05/03/2023]
Abstract
The heterogeneity of native tissues requires complex materials to provide suitable substitutes for model systems and replacement tissues. Functionally graded materials have the potential to address this challenge by mimicking the gradients in heterogeneous tissues such as porosity, mineralization, and fiber alignment to influence strength, ductility, and cell signaling. Advancements in microfluidics, electrospinning, and 3D printing enable the creation of increasingly complex gradient materials that further our understanding of physiological gradients. The combination of these methods enables rapid prototyping of constructs with high spatial resolution. However, successful translation of these gradients requires both spatial and temporal presentation of cues to model the complexity of native tissues that few materials have demonstrated. This review highlights recent strategies to engineer functionally graded materials for the modeling and repair of heterogeneous tissues, together with a description of how cells interact with various gradients.
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Affiliation(s)
- Jeremy M. Lowen
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
| | - J. Kent Leach
- Department of Biomedical Engineering, University of California, Davis, CA, 95616
- Department of Orthopaedic Surgery, UC Davis Health, Sacramento, CA 95817
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Zhao K, Guo T, Wang C, Zhou Y, Xiong T, Wu L, Li X, Mittal P, Shi S, Gref R, Zhang J. Glycoside scutellarin enhanced CD-MOF anchoring for laryngeal delivery. Acta Pharm Sin B 2020; 10:1709-1718. [PMID: 33088690 PMCID: PMC7564328 DOI: 10.1016/j.apsb.2020.04.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/03/2020] [Accepted: 04/16/2020] [Indexed: 12/14/2022] Open
Abstract
It is essential to develop new carriers for laryngeal drug delivery in light of the lack of therapy in laryngeal related diseases. When the inhalable micron-sized crystals of γ-cyclodextrin metal-organic framework (CD-MOF) was utilized as dry powder inhalers (DPIs) carrier with high fine particle fraction (FPF), it was found in this research that the encapsulation of a glycoside compound, namely, scutellarin (SCU) in CD-MOF could significantly enhance its laryngeal deposition. Firstly, SCU loading into CD-MOF was optimized by incubation. Then, a series of characterizations were carried out to elucidate the mechanisms of drug loading. Finally, the laryngeal deposition rate of CD-MOF was 57.72 ± 2.19% improved by SCU, about two times higher than that of CD-MOF, when it was determined by Next Generation Impactor (NGI) at 65 L/min. As a proof of concept, pharyngolaryngitis therapeutic agent dexamethasone (DEX) had improved laryngeal deposition after being co-encapsulated with SCU in CD-MOF. The molecular simulation demonstrated the configuration of SCU in CD-MOF and its contribution to the free energy of the SCU@CD-MOF, which defined the enhanced laryngeal anchoring. In conclusion, the glycosides-like SCU could effectively enhance the anchoring of CD-MOF particles to the larynx to facilitate the treatment of laryngeal diseases.
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Affiliation(s)
- Kena Zhao
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 311402, China
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
| | - Tao Guo
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
| | - Caifen Wang
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
| | - Yong Zhou
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
- Key Laboratory of Modern Chinese Medicine Preparations, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Ting Xiong
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
- Key Laboratory of Modern Chinese Medicine Preparations, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Li Wu
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
| | - Xue Li
- Université Paris-Saclay, CNRS 8214, Institut des Sciences Moléculaires d'Orsay, Orsay 91405, France
| | - Priyanka Mittal
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Senlin Shi
- College of Pharmaceutical Sciences, Zhejiang Chinese Medical University, Hangzhou 311402, China
- Corresponding authors. Tel./fax: +86 571 86613524 (Senlin Shi); +86 21 50805901 (Jiwen Zhang).
| | - Ruxandra Gref
- Université Paris-Saclay, CNRS 8214, Institut des Sciences Moléculaires d'Orsay, Orsay 91405, France
- Corresponding authors. Tel./fax: +86 571 86613524 (Senlin Shi); +86 21 50805901 (Jiwen Zhang).
| | - Jiwen Zhang
- Center for Drug Delivery System, Shanghai Institute of Materia Medica, State Key Laboratory of Drug Research, Chinese Academy of Sciences, Shanghai 201203, China
- NMPA Key Laboratory for Quality Research and Evaluation of Pharmaceutical Excipients, National Institutes for Food and Drug Control, Beijing 100050, China
- Key Laboratory of Modern Chinese Medicine Preparations, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Corresponding authors. Tel./fax: +86 571 86613524 (Senlin Shi); +86 21 50805901 (Jiwen Zhang).
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Choi JS, Heang Oh S, Kim YM, Lim JY. Hyaluronic Acid/Alginate Hydrogel Containing Hepatocyte Growth Factor and Promotion of Vocal Fold Wound Healing. Tissue Eng Regen Med 2020; 17:651-658. [PMID: 32676953 DOI: 10.1007/s13770-020-00280-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/17/2020] [Accepted: 06/07/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Hepatocyte growth factor (HGF) has been shown to facilitate vocal fold (VF) wound healing. This study was undertaken to determine whether the therapeutic efficacy of HGF could be enhanced by applying it in hyaluronic acid and alginate (HA/ALG) composite hydrogels into VFs after injury in a rabbit model. METHODS HGF was loaded into HA/ALG composite hydrogel (HGF-HA/ALG) and its in vitro release profile was evaluated. In addition, HGF-HA/ALG was injected into the VFs of rabbits immediately after direct injury and HGF or PBS was injected in the same manner into control groups. Macroscopic features were observed by endoscopy at 3 months post-injury. Functional analyses including mucosal waves of VFs and viscoelastic properties were performed by kymography following high-speed digital imaging and rheometer. Histopathological and immunohistochemical evaluations were also conducted on VFs. RESULTS HGF release from HGF-HA/ALG was sustained for up to 3 weeks. Rabbits treated with HGF-HA/ALG showed improved mucosal vibrations and VF viscoelastic properties as compared with the PBS and HGF controls. Histopathological staining revealed HGF-HA/ALG treated VFs showed less fibrosis than PBS and HGF controls, and immunohistochemical analysis demonstrated amounts of type I collagen and fibronectin were lower in HGF-HA/ALG treated animals than in PBS and HGF controls at 3 months post-injury. CONCLUSION HGF containing HA/ALG hydrogel enhanced healing in our rabbit model of VF injury.
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Affiliation(s)
- Jeong-Seok Choi
- Department of Otorhinolaryngology - Head and Neck Surgery, Inha University School of Medicine, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Se Heang Oh
- Department of Nanobiomedical Science, Dankook University, 119 Dandae-ro, Dongnam-gu, Cheonan-si, Chungnam, 31116, Republic of Korea
| | - Young-Mo Kim
- Department of Otorhinolaryngology - Head and Neck Surgery, Inha University School of Medicine, 100 Inha-ro, Michuhol-gu, Incheon, 22212, Republic of Korea
| | - Jae-Yol Lim
- Department of Otorhinolaryngology, Gangnam Severance Hospital, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
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Encinas-Basurto D, Ibarra J, Juarez J, Burboa MG, Barbosa S, Taboada P, Troncoso-Rojas R, Valdez MA. Poly(lactic-co-glycolic acid) nanoparticles for sustained release of allyl isothiocyanate: characterization,in vitrorelease and biological activity. J Microencapsul 2017; 34:231-242. [DOI: 10.1080/02652048.2017.1323037] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- David Encinas-Basurto
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, Hermosillo, Sonora, México
| | - Jaime Ibarra
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, Hermosillo, Sonora, México
| | - Josué Juarez
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, Hermosillo, Sonora, México
| | - María G. Burboa
- Departamento de Investigaciones Científicas y Tecnológicas, Universidad de Sonora, Rosales y transversal, Hermosillo, Sonora, México
| | - Silvia Barbosa
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Santiago de Compostela, España
| | - Pablo Taboada
- Departamento de Física de la Materia Condensada, Facultad de Física, Universidad de Santiago de Compostela, Santiago de Compostela, España
| | - Rosalba Troncoso-Rojas
- Coordinación de Alimentos de Origen Vegetal, Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD, AC), La Victoria, Hermosillo, Sonora, México
| | - Miguel A. Valdez
- Departamento de Física, Posgrado en Nanotecnología, Universidad de Sonora, Rosales y Transversal, Hermosillo, Sonora, México
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Kosinski AM, Pothen JM, Panitch A, Sivasankar MP. Dexamethasone Controlled Release on TGF-β1 Treated Vocal Fold Fibroblasts. Ann Otol Rhinol Laryngol 2015; 124:572-8. [PMID: 25667215 DOI: 10.1177/0003489415570933] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Corticosteroids may be beneficial in treating vocal fold scarring. Current drug delivery methods do not permit controlled corticosteroid release. Here we investigate the effects of poly-lactic-co-glycolic acid (PLGA) microparticles loaded with the corticosteroid dexamethasone in reducing collagen synthesis and inflammation in vocal fold fibroblasts treated with and without TGF-β1. STUDY DESIGN Experimental, in vitro study. METHODS PLGA microparticles of differing molecular weight and terminating moieties were synthesized using a hydrogel template method. The release of dexamethasone was characterized from these microparticles over 4 days. Based on the release studies, ester-terminated low molecular weight PLGA microparticles were loaded with dexamethasone and applied to TGF-β1 treated vocal fold fibroblasts for 4 days. Quantitative polymerase chain reaction (qPCR) and enzyme-linked immunosorbent assays (ELISAs) were used to assess the effects of released dexamethasone on collagen synthesis and inflammatory mediators. RESULTS COL3A1 and COL1A2 were significantly down-regulated after exposure to ester-terminated low molecular weight PLGA microparticles loaded with dexamethasone. The loaded microparticles also reduced interleukin-6 synthesis. CONCLUSION These data show promise in using a PLGA microparticle-based delivery system to control dexamethasone release over 4 days. Our findings lay the groundwork for developing more effective treatments for vocal fold scarring.
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Affiliation(s)
- Aaron M Kosinski
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Jewel M Pothen
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - Alyssa Panitch
- Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
| | - M Preeti Sivasankar
- Speech, Language, and Hearing Sciences, Purdue University, West Lafayette, Indiana, USA
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Choi JS, Lee S, Kim DY, Kim YM, Kim MS, Lim JY. Functional remodeling after vocal fold injury by small intestinal submucosa gel containing hepatocyte growth factor. Biomaterials 2014; 40:98-106. [PMID: 25433606 DOI: 10.1016/j.biomaterials.2014.11.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 10/30/2014] [Accepted: 11/08/2014] [Indexed: 10/24/2022]
Abstract
A biomaterial derived from porcine small intestinal submucosa (SIS) was used in smart drug delivery and tissue remodeling. SIS suspensions were easily formulated by simple mixing with the drug of choice and formed an in situ gel upon injection into tissues, enabling them to act as protein drug depots. This study was conducted to determine whether functional remodeling of an injured vocal fold (VF) could be achieved by hepatocyte growth factor (HGF)-containing SIS in situ-forming gel after VF injury in a rabbit model. To accomplish this, we loaded HGF in SIS suspensions and observed a gradual, sustained release of HGF for at least 21 days in vitro. Evaluation of the in vivo efficacy demonstrated that the HGF and HGF-loaded SIS treated VFs showed improved mucosal healing when compared with the PBS-injected VFs. Histopathological evaluations revealed that treatment with the HGF/SIS group alone successfully ameliorated the deposition of type I collagen and increased synthesis of hyaluronic acids relative to the PBS group at three months post-injury. Functional analyses showed that the HGF/SIS group prevented deterioration of mucosal vibration and induced significant improvement in the mean viscoelastic modulus, but that other groups failed to achieve functional rescue of VF biomechanics. Additionally, the VF oscillation in the HGF/SIS group was superior to that in the HGF group. The results of this study suggest that SIS in situ gel has the potential for use as an HGF delivery carrier for enhancement of wound healing and improvement of functional remodeling following VF injury.
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Affiliation(s)
- Jeong-Seok Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Republic of Korea; Translational Research Center, Inha University School of Medicine, Incheon, Republic of Korea
| | - Songyi Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Republic of Korea; Translational Research Center, Inha University School of Medicine, Incheon, Republic of Korea
| | - Da Yeon Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Young-Mo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Republic of Korea; Translational Research Center, Inha University School of Medicine, Incheon, Republic of Korea
| | - Moon Suk Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, Republic of Korea
| | - Jae-Yol Lim
- Department of Otorhinolaryngology-Head and Neck Surgery, Republic of Korea; Translational Research Center, Inha University School of Medicine, Incheon, Republic of Korea.
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Su LC, Xu H, Tran RT, Tsai YT, Tang L, Banerjee S, Yang J, Nguyen KT. In situ re-endothelialization via multifunctional nanoscaffolds. ACS NANO 2014; 8:10826-36. [PMID: 25222570 PMCID: PMC4212783 DOI: 10.1021/nn504636n] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 09/11/2014] [Indexed: 05/25/2023]
Abstract
The endothelium monolayer lining in the luminal side of blood vessels provides critical antithrombotic functions. Damage to these cells will expose a highly thrombogenic subendothelium, which leads to pathological vascular changes. Using combined tissue engineering and ligand-receptor targeting strategy, we developed a biodegradable urethane-doped polyester (UPE) multifunctional targeting nanoparticle (MTN) scaffold system with dual ligands: (1) glycoprotein 1b (GP1b) to target the injured arterial endothelium and subendothelium and (2) anti-CD34 antibodies to capture endothelial progenitor cells for endothelium regeneration. The fabricated spherical MTNs of 400 nm were found to be cytocompatible and hemocompatible. Both the in vitro and ex vivo targeting of these nanoscaffolds not only showed binding specificity of MTNs onto the von Willebrand factor -coated surfaces that simulate the injured arterial walls but also competed with platelets for binding onto these injured sites. Further in vivo study has revealed that a single delivery of MTNs upon vascular injury reduced neointimal hyperplasia by 57% while increased endothelium regeneration by ∼ 60% in 21 days. These results support the promise of using MTN nanoscaffolds for treating vascular injury in situ.
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Affiliation(s)
- Lee-Chun Su
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Hao Xu
- Department of Internal Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Richard T. Tran
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Yi-Ting Tsai
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
| | - Subhash Banerjee
- Department of Internal Medicine, University of Texas Southwestern Medical Center at Dallas, Dallas, Texas 75390, United States
| | - Jian Yang
- Department of Biomedical Engineering, Materials Research Institute, The Huck Institutes of The Life Sciences, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Kytai T. Nguyen
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas 76010, United States
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Lee JH, Kim DW, Kim EN, Park SW, Kim HB, Oh SH, Kwon SK. Evaluation of the Poly(lactic-co-glycolic acid)/Pluronic F127 for Injection Laryngoplasty in Rabbits. Otolaryngol Head Neck Surg 2014; 151:830-5. [DOI: 10.1177/0194599814549527] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Objective Poly(lactic-co-glycolic acid) (PLGA) is an aliphatic polyester and one of the most commonly used synthetic biodegradable polymers for tissue engineering. The objectives of this study were to evaluate the biocompatibility of PLGA/Pluronic F127 in the vocal fold. Study Design A randomized, prospective, controlled animal study. Setting University laboratory. Subjects and Methods We used 18 New Zealand white rabbits, which were divided into 5% PLGA solution (n = 9) and 10% PLGA solution (n = 9) groups. The PLGA/Pluronic F127 solutions were injected into the rabbit vocal fold. Laryngoscopic exams were performed at 1, 4, and 8 weeks after implantation; then larynx specimens were sampled. High-speed video camera examination was performed for functional analysis of vocal mucosa vibration at 8 weeks after implantation. Also, we evaluated the amplitude of the mucosal wave from the laryngeal midline on high-speed recording. Histologic study of larynx specimen was performed at 4 and 8 weeks. Results All animals survived until the scheduled period. Laryngoscopic analysis showed that both 5% and 10% PLGA/Pluronic F127 maintained after 8 weeks after injection without significant inflammatory response. On functional analysis, high-speed camera examination revealed regular and symmetric contact of vocal fold mucosa without a distorted movement by injected PLGA/Pluronic F127. Histologically, no significant inflammation was observed in the injected vocal fold. Conclusion As a vocal fold injection material, PLGA/Pluronic F127 showed a good bio-compatibility without significant inflammatory response. Further experiment will follow to elucidate its role for drug or gene delivery into the vocal fold.
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Affiliation(s)
- Jin Ho Lee
- Department of Advanced Materials, Hannam University, Daejeon, Republic of Korea
| | - Dong Wook Kim
- Department of Otorhinolaryngology–Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Na Kim
- Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Songpa-gu, Seoul, Republic of Korea
| | - Seok-Won Park
- Department of Otorhinolaryngology–Head and Neck Surgery, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Hee-Bok Kim
- Department of Otorhinolaryngology–Head and Neck Surgery, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
| | - Se Heang Oh
- Department of Nanobiomedical Science, Dankook University, Cheonan, Republic of Korea
| | - Seong Keun Kwon
- Department of Otorhinolaryngology–Head and Neck Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
- Cancer Research Institute, Seoul, Republic of Korea
- Seoul National University Medical Research Center, Seoul, Republic of Korea
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Sivaraman B, Bashur CA, Ramamurthi A. Advances in biomimetic regeneration of elastic matrix structures. Drug Deliv Transl Res 2012; 2:323-50. [PMID: 23355960 PMCID: PMC3551595 DOI: 10.1007/s13346-012-0070-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Elastin is a vital component of the extracellular matrix, providing soft connective tissues with the property of elastic recoil following deformation and regulating the cellular response via biomechanical transduction to maintain tissue homeostasis. The limited ability of most adult cells to synthesize elastin precursors and assemble them into mature crosslinked structures has hindered the development of functional tissue-engineered constructs that exhibit the structure and biomechanics of normal native elastic tissues in the body. In diseased tissues, the chronic overexpression of proteolytic enzymes can cause significant matrix degradation, to further limit the accumulation and quality (e.g., fiber formation) of newly deposited elastic matrix. This review provides an overview of the role and importance of elastin and elastic matrix in soft tissues, the challenges to elastic matrix generation in vitro and to regenerative elastic matrix repair in vivo, current biomolecular strategies to enhance elastin deposition and matrix assembly, and the need to concurrently inhibit proteolytic matrix disruption for improving the quantity and quality of elastogenesis. The review further presents biomaterial-based options using scaffolds and nanocarriers for spatio-temporal control over the presentation and release of these biomolecules, to enable biomimetic assembly of clinically relevant native elastic matrix-like superstructures. Finally, this review provides an overview of recent advances and prospects for the application of these strategies to regenerating tissue-type specific elastic matrix structures and superstructures.
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Affiliation(s)
- Balakrishnan Sivaraman
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Chris A. Bashur
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
| | - Anand Ramamurthi
- Department of Biomedical Engineering, The Cleveland Clinic, 9500 Euclid Avenue, ND 20, Cleveland, OH 44195, USA
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Weldon C, Tian B, Kohane DS. Nanotechnology for surgeons. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:223-8. [DOI: 10.1002/wnan.128] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Christopher Weldon
- Department of Surgery, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
| | - Bozhi Tian
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
- The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Daniel S. Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA, USA
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