1
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Paunović N, Meyer D, Krivitsky A, Studart AR, Bao Y, Leroux JC. 4D printing of biodegradable elastomers with tailorable thermal response at physiological temperature. J Control Release 2023; 361:417-426. [PMID: 37532144 DOI: 10.1016/j.jconrel.2023.07.053] [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: 02/14/2023] [Revised: 07/13/2023] [Accepted: 07/30/2023] [Indexed: 08/04/2023]
Abstract
4D printing has a great potential for the manufacturing of soft robotics and medical devices. The alliance of digital light processing (DLP) 3D printing and novel shape-memory photopolymers allows for the fabrication of smart 4D-printed medical devices in high resolution and with tailorable functionalities. However, most of the reported 4D-printed materials are nondegradable, which limits their clinical applications. On the other hand, 4D printing of biodegradable shape-memory elastomers is highly challenging, especially when transition points close to physiological temperature and shape fixation under ambient conditions are required. Here, we report the 4D printing of biodegradable shape-memory elastomers with tailorable transition points covering physiological temperature, by using poly(D,L-lactide-co-trimethylene carbonate) methacrylates at various monomer feed ratios. After the programming step, the high-resolution DLP printed stents preserved their folded shape at room temperature, and showed efficient shape recovery at 37 °C. The materials were cytocompatible and readily degradable under physiological conditions. Furthermore, drug-loaded devices with tuneable release kinetics were realized by DLP-printing with resins containing polymers and levofloxacin or nintedanib. This study offers a new perspective for the development of next-generation 4D-printed medical devices.
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Affiliation(s)
- N Paunović
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - D Meyer
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - A Krivitsky
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
| | - A R Studart
- Complex Materials, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland
| | - Y Bao
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
| | - J-C Leroux
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland.
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2
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Ishihara R. Endoscopic Stenting for Malignant Dysphagia in Patients with Esophageal Cancer. Curr Oncol 2023; 30:5984-5994. [PMID: 37504308 PMCID: PMC10378447 DOI: 10.3390/curroncol30070447] [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: 05/09/2023] [Revised: 06/09/2023] [Accepted: 06/17/2023] [Indexed: 07/29/2023] Open
Abstract
Malignant dysphagia is a common problem in patients with esophageal cancer. Endoscopic stenting can resolve dysphagia caused by malignant stricture; however, controversy exists regarding the use of esophageal stenting for the treatment of malignant stricture, including whether stenting or radiotherapy is superior, whether stenting before or after radiotherapy is safe, whether stenting before or after chemotherapy is safe, and whether low-radial-force stents are safer than conventional stents. Among treatment options for malignant dysphagia, stenting may have some disadvantages in terms of pain relief and the risk of adverse events compared with radiotherapy and in terms of survival compared with gastrostomy. Additionally, the risk of stent-related adverse events is significantly associated with prior radiotherapy. The risk of perforation is especially high when a radiation dose of >40 Gy is delivered to the esophagus after stenting, whereas perforation is not associated with prior chemotherapy or additional chemotherapy after stenting. Nevertheless, stenting remains an important palliative option, especially for patients with a short life expectancy and a strong desire for oral intake, because stenting can facilitate a more rapid improvement in dysphagia than radiotherapy or gastrostomy. The application of a low-radial-force stent should be considered to reduce the risk of adverse events, especially in patients with prior radiotherapy.
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Affiliation(s)
- Ryu Ishihara
- Department of Gastrointestinal Oncology, Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka 541-8567, Japan
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3
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Talebian S, Mendes B, Conniot J, Farajikhah S, Dehghani F, Li Z, Bitoque D, Silva G, Naficy S, Conde J, Wallace GG. Biopolymeric Coatings for Local Release of Therapeutics from Biomedical Implants. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207603. [PMID: 36782094 PMCID: PMC10131825 DOI: 10.1002/advs.202207603] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Indexed: 06/18/2023]
Abstract
The deployment of structures that enable localized release of bioactive molecules can result in more efficacious treatment of disease and better integration of implantable bionic devices. The strategic design of a biopolymeric coating can be used to engineer the optimal release profile depending on the task at hand. As illustrative examples, here advances in delivery of drugs from bone, brain, ocular, and cardiovascular implants are reviewed. These areas are focused to highlight that both hard and soft tissue implants can benefit from controlled localized delivery. The composition of biopolymers used to achieve appropriate delivery to the selected tissue types, and their corresponding outcomes are brought to the fore. To conclude, key factors in designing drug-loaded biopolymeric coatings for biomedical implants are highlighted.
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Affiliation(s)
- Sepehr Talebian
- School of Chemical and Biomolecular EngineeringThe University of SydneySydneyNSW2006Australia
- Nano Institute (Sydney Nano)The University of SydneySydneyNSW2006Australia
| | - Bárbara Mendes
- ToxOmicsNOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboa1169‐056Portugal
| | - João Conniot
- ToxOmicsNOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboa1169‐056Portugal
| | - Syamak Farajikhah
- School of Chemical and Biomolecular EngineeringThe University of SydneySydneyNSW2006Australia
- Nano Institute (Sydney Nano)The University of SydneySydneyNSW2006Australia
| | - Fariba Dehghani
- School of Chemical and Biomolecular EngineeringThe University of SydneySydneyNSW2006Australia
- Nano Institute (Sydney Nano)The University of SydneySydneyNSW2006Australia
| | - Zhongyan Li
- School of Chemical and Biomolecular EngineeringThe University of SydneySydneyNSW2006Australia
| | - Diogo Bitoque
- ToxOmicsNOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboa1169‐056Portugal
| | - Gabriela Silva
- ToxOmicsNOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboa1169‐056Portugal
| | - Sina Naficy
- School of Chemical and Biomolecular EngineeringThe University of SydneySydneyNSW2006Australia
- Nano Institute (Sydney Nano)The University of SydneySydneyNSW2006Australia
| | - João Conde
- ToxOmicsNOVA Medical School|Faculdade de Ciências MédicasNMS|FCMUniversidade Nova de LisboaLisboa1169‐056Portugal
| | - Gordon G. Wallace
- Intelligent Polymer Research InstituteARC Centre of Excellence for Electromaterials ScienceAIIM FacilityUniversity of WollongongSydneyNSW2522Australia
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4
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Sheikh A, Abourehab MAS, Kesharwani P. The clinical significance of 4D printing. Drug Discov Today 2023; 28:103391. [PMID: 36195204 DOI: 10.1016/j.drudis.2022.103391] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/11/2022] [Accepted: 09/28/2022] [Indexed: 02/02/2023]
Abstract
4D printing is the next step on from 3D printing involving the fourth dimension of 'time'. The programmed 4D-printed objects are capable of changing their shape in response to external stimuli, such as light, heat, or water, differentiating them from 3D-printed static objects. This technique promises new possibilities for cancer treatment, drug delivery, stent development, and tissue engineering. In this review, we focus on the development of 4D-printed objects, their clinical use, and the possibility of 5D printing, which could revolutionize the fields of biomedical engineering and drug delivery.
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Affiliation(s)
- Afsana Sheikh
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Mohammed A S Abourehab
- Department of Pharmaceutics, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia; Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Minia University, Minia 61519, Egypt
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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5
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Paunović N, Marbach J, Bao Y, Berger V, Klein K, Schleich S, Coulter FB, Kleger N, Studart AR, Franzen D, Luo Z, Leroux J. Digital Light 3D Printed Bioresorbable and NIR-Responsive Devices with Photothermal and Shape-Memory Functions. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200907. [PMID: 35896948 PMCID: PMC9507367 DOI: 10.1002/advs.202200907] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/23/2022] [Indexed: 06/15/2023]
Abstract
Digital light processing (DLP) 3D printing is a promising technique for the rapid manufacturing of customized medical devices with high precision. To be successfully translated to a clinical setting, challenges in the development of suitable photopolymerizable materials have yet to be overcome. Besides biocompatibility, it is often desirable for the printed devices to be biodegradable, elastic, and with a therapeutic function. Here, a multifunctional DLP printed material system based on the composite of gold nanorods and polyester copolymer is reported. The material demonstrates robust near-infrared (NIR) responsiveness, allowing rapid and stable photothermal effect leading to the time-dependent cell death. NIR light-triggerable shape transformation is demonstrated, resulting in a facilitated insertion and expansion of DLP printed stent ex vivo. The proposed strategy opens a promising avenue for the design of multifunctional therapeutic devices based on nanoparticle-polymer composites.
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Affiliation(s)
- Nevena Paunović
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
| | - Jessica Marbach
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
| | - Yinyin Bao
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
| | - Valentine Berger
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
| | - Karina Klein
- Musculoskeletal Research UnitVetsuisse FacultyUniversity of ZurichZurich8057Switzerland
| | - Sarah Schleich
- Musculoskeletal Research UnitVetsuisse FacultyUniversity of ZurichZurich8057Switzerland
| | | | - Nicole Kleger
- Complex MaterialsDepartment of MaterialsETH ZurichZurich8093Switzerland
| | - André R. Studart
- Complex MaterialsDepartment of MaterialsETH ZurichZurich8093Switzerland
| | - Daniel Franzen
- Department of PulmonologyUniversity Hospital ZurichZurich8006Switzerland
| | - Zhi Luo
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
- Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical EngineeringSouthern University of Science and TechnologyShenzhen518055P. R. China
| | - Jean‐Christophe Leroux
- Institute of Pharmaceutical SciencesDepartment of Chemistry and Applied BiosciencesETH ZurichZurich8093Switzerland
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6
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Yang R, Liu W, Song N, Li X, Li Z, Luo F, Li J, Tan H. NIR Photothermal-Responsive Shape Memory Polyurethane with Protein-Inspired Aggregated Chymotrypsin-Sensitive Degradable Domains. Macromol Rapid Commun 2022; 43:e2200490. [PMID: 35836315 DOI: 10.1002/marc.202200490] [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: 05/27/2022] [Revised: 06/27/2022] [Indexed: 11/05/2022]
Abstract
Biodegradable shape memory polymers are promising biomaterials for stents used in minimally invasive surgical procedures such as intestinal stents. Herein, a series of biodegradable shape memory polyurethanes (SMPUs) containing a novel phenylalanine-derived chain extender PHP were synthesized. Inspired by the fact that the function of biomacromolecules such as proteins is rich and varied because of the multiple combinations of the amino acid in highly evolved biosystems, we found that the sequence distribution of PHP in SMPU would also have a great influence on the phase structure and degradation behavior, especially the difference of surface morphology caused by degradation. Considering that the transition temperature (Ttrans ) of SMPU we obtained is higher than physiological temperature, oxidized carbon black (OCB) with the ability of photothermal conversion was introduced into SMPU, which can not only endow SMPU with near-infrared response shape recovery characteristics, but also enhance phase separation degree and mechanical properties of them. SMPU/OCB composites show excellent shape memory effect and rapid photothermal response, and they can be degraded by chymotrypsin with an adjustable degradation rate. These SMPU/OCB composites show broad potential for application as intestinal stents. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Ruibo Yang
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Wenkai Liu
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Nijia Song
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu, 610068, China
| | - Xin Li
- Zhengzhou Research Institute for Abrasives & Grinding Co., Ltd., Zhengzhou, 450001, China
| | - Zhen Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Feng Luo
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Jiehua Li
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
| | - Hong Tan
- College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, 610065, China
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7
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Niu L, Liu Z, Geng X, Zhong X, Zhao H, Zhang H, Xi Resource J, Feng Z, Zhang F, Ye L. Anti-coagulation and anti-hyperplasia coating for retrievable vena cava filters by electrospraying and their performance in vivo. Int J Pharm 2022; 619:121690. [PMID: 35331832 DOI: 10.1016/j.ijpharm.2022.121690] [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: 09/24/2021] [Revised: 03/11/2022] [Accepted: 03/17/2022] [Indexed: 11/17/2022]
Abstract
A novel drug eluting retrievable vena cava filter (RVCF) with a heparin-modified poly(ε-caprolactone) (hPCL) coating containing rapamycin was prepared by electrospraying. The in vitro drug release pattern showed that the encapsulated rapamycin in the coating can be sustainably released within one month, whereas activated partial thromboplastin time (APTT) and in vitro cell culture showed that the drug eluting RVCF can effectively extend blood clotting time and inhibit smooth muscle cell (SMC) and endothelial cell (EC) proliferation, respectively. The as-prepared drug eluting RVCF and corresponding commercial RVCF were implanted into the vena cava of sheep. The retrieval operation at a predetermined time point showed that the drug eluting RVCF had a much higher retrieval rate than the commercial RVCF. Comprehensive investigations, including histological, immunohistological and immunofluorescence analyses, on explanted veins were carried out. The results demonstrated that the as-prepared RVCF possessed excellent antihyperplasia properties in vivo, significantly improving the retrieval rate and extending the in vivo dwelling time in sheep. Consequently, the drug eluting RVCF has promising potential for application in the clinic to improve RVCF retrieval rates.
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Affiliation(s)
- Luyuan Niu
- Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Zongjian Liu
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, China
| | - Xue Geng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Xuanshu Zhong
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Hui Zhao
- Beijing Luhe Hospital, Capital Medical University, Beijing 101100, China
| | - Huan Zhang
- Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China.
| | - Jianing Xi Resource
- Beijing Rehabilitation Hospital, Capital Medical University, Beijing 100144, China.
| | - Zengguo Feng
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Fuxian Zhang
- Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - Lin Ye
- School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China.
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8
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Krause J, Brokmann F, Rosenbaum C, Weitschies W. The challenges of drug delivery to the esophagus and how to overcome them. Expert Opin Drug Deliv 2022; 19:119-131. [DOI: 10.1080/17425247.2022.2033206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Julius Krause
- University of Greifswald, Institute of Pharmacy, Department of Biopharmaceutics and Pharmaceutical Technology, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17489 Greifswald, Germany
| | - Friederike Brokmann
- University of Greifswald, Institute of Pharmacy, Department of Biopharmaceutics and Pharmaceutical Technology, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17489 Greifswald, Germany
| | - Christoph Rosenbaum
- University of Greifswald, Institute of Pharmacy, Department of Biopharmaceutics and Pharmaceutical Technology, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17489 Greifswald, Germany
| | - Werner Weitschies
- University of Greifswald, Institute of Pharmacy, Department of Biopharmaceutics and Pharmaceutical Technology, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17489 Greifswald, Germany
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9
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Ali Akbari Ghavimi S, Gehret PM, Aronson MR, Schipani R, Smith KW, Borek RC, Germiller JA, Jacobs IN, Zur KB, Gottardi R. Drug delivery to the pediatric upper airway. Adv Drug Deliv Rev 2021; 174:168-189. [PMID: 33845038 DOI: 10.1016/j.addr.2021.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 03/22/2021] [Accepted: 04/06/2021] [Indexed: 11/25/2022]
Abstract
Pediatric upper airway disorders are frequently life-threatening and require precise assessment and intervention. Targeting these pathologies remains a challenge for clinicians due to the high complexity of pediatric upper airway anatomy and numerous potential etiologies; the most common treatments include systemic delivery of high dose steroids and antibiotics or complex and invasive surgeries. Furthermore, the majority of innovative airway management technologies are only designed and tested for adults, limiting their widespread implementation in the pediatric population. Here, we provide a comprehensive review of the most recent challenges of managing common pediatric upper airway disorders, describe the limitations of current clinical treatments, and elaborate on how to circumvent those limitations via local controlled drug delivery. Furthermore, we propose future advancements in the field of drug-eluting technologies to improve pediatric upper airway management outcomes.
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10
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Park JH, Park J, Park Y, Kang JM, Ryu DS, Kyung J, Jang JK, Hwang C, Shim IK, Song HY, Yang SG, Kim SC. Acetazolamide-eluting biodegradable tubular stent prevents pancreaticojejunal anastomotic leakage. J Control Release 2021; 335:650-659. [PMID: 34118337 DOI: 10.1016/j.jconrel.2021.06.010] [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: 12/15/2020] [Revised: 05/23/2021] [Accepted: 06/08/2021] [Indexed: 10/21/2022]
Abstract
Postoperative pancreatic fistula at the early stage can lead to auto-digestion, which may delay the recovery of the pancreaticojejunal (PJ) anastomosis. The efficacy and safety of an acetazolamide-eluting biodegradable tubular stent (AZ-BTS) for the prevention of self-digestion and intra-abdominal inflammatory diseases caused by pancreatic juice leakage after PJ anastomosis in a porcine model were investigated. The AZ-BTS was successfully fabricated using a multiple dip-coating process. Then, the drug amount and release profile were analyzed. The therapeutic effects of AZ were examined in vitro using two kinds of pancreatic cancer cell lines, AsPC-1 and PANC-1. The efficacy of AZ-BTS was assessed in a porcine PJ leakage model, with animals were each assigned to a leakage group, a BTS group and an AZ-BTS group. The overall mortality rates in these three groups were 44.4%, 16.6%, and 0%, respectively. Mean α-amylase concentrations were significantly higher in the leakage and BTS groups than in the AZ-BTS group on day 2-5 (p < 0.05 each all). The luminal diameters and areas of the pancreatic duct were significantly larger in the leakage group than in the BTS and AZ-BTS groups (p < 0.05 each all). These findings indicate that AZ-BTS can significantly suppress intra-abdominal inflammatory diseases caused by pancreatic juice leakage and also prevent late stricture formation at the PJ anastomotic site in a porcine model.
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Affiliation(s)
- Jung-Hoon Park
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Jieun Park
- Department of Biomedical Science, BK21 FOUR Program in Biomedical Science and Engineering, Inha University College of Medicine, 366 Seohae-Daero, Jung-Gu, Incheon 22332, Republic of Korea
| | - Yejong Park
- Division of Hepatobiliary Pancreas Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Jeon Min Kang
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Dae Sung Ryu
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Jeongsu Kyung
- Department of Biomedical Science, BK21 FOUR Program in Biomedical Science and Engineering, Inha University College of Medicine, 366 Seohae-Daero, Jung-Gu, Incheon 22332, Republic of Korea
| | - Jong Keon Jang
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Changmo Hwang
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - In Kyong Shim
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea; Asan Medical Institute of Convergence Science and Technology (AMIST), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea
| | - Ho-Young Song
- Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea; Department of Radiology, UT Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229, USA
| | - Su-Geun Yang
- Department of Biomedical Science, BK21 FOUR Program in Biomedical Science and Engineering, Inha University College of Medicine, 366 Seohae-Daero, Jung-Gu, Incheon 22332, Republic of Korea.
| | - Song Cheol Kim
- Biomedical Engineering Research Center, Asan Institute for Life Sciences, Asan Medical Center, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea; Division of Hepatobiliary Pancreas Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea; Asan Medical Institute of Convergence Science and Technology (AMIST), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Republic of Korea.
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11
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Melocchi A, Uboldi M, Cerea M, Foppoli A, Maroni A, Moutaharrik S, Palugan L, Zema L, Gazzaniga A. Shape memory materials and 4D printing in pharmaceutics. Adv Drug Deliv Rev 2021; 173:216-237. [PMID: 33774118 DOI: 10.1016/j.addr.2021.03.013] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/09/2021] [Accepted: 03/18/2021] [Indexed: 12/18/2022]
Abstract
Shape memory materials (SMMs), including alloys and polymers, can be programmed into a temporary configuration and then recover the original shape in which they were processed in response to a triggering external stimulus (e.g. change in temperature or pH, contact with water). For this behavior, SMMs are currently raising a lot of attention in the pharmaceutical field where they could bring about important innovations in the current treatments. 4D printing involves processing of SMMs by 3D printing, thus adding shape evolution over time to the already numerous customization possibilities of this new manufacturing technology. SMM-based drug delivery systems (DDSs) proposed in the scientific literature were here reviewed and classified according to the target pursued through the shape recovery process. Administration route, therapeutic goal, temporary and original shape, triggering stimulus, main innovation features and possible room for improvement of the DDSs were especially highlighted.
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12
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Fouladian P, Jin Q, Arafat M, Song Y, Guo X, Blencowe A, Garg S. Drug-Loaded, Polyurethane Coated Nitinol Stents for the Controlled Release of Docetaxel for the Treatment of Oesophageal Cancer. Pharmaceuticals (Basel) 2021; 14:ph14040311. [PMID: 33915787 PMCID: PMC8067330 DOI: 10.3390/ph14040311] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/22/2021] [Accepted: 03/24/2021] [Indexed: 12/18/2022] Open
Abstract
For several decades, self-expanding metal stents (SEMSs) have shown significant clinical success in the palliation of obstructive metastatic oesophageal cancer. However, these conventional oesophageal stents can suffer from stent blockage caused by malignant tumour cell growth. To overcome this challenge, there is growing interest in drug-releasing stents that, in addition to palliation, provide a sustained and localized release of anticancer drugs to minimise tumour growth. Therefore, in this study we prepared and evaluated an oesophageal stent-based drug delivery platform to provide the sustained release of docetaxel (DTX) for the treatment of oesophageal cancer-related obstructions. The DTX-loaded oesophageal stents were fabricated via dip-coating of bare nitinol stents with DTX-polyurethane (PU) solutions to provide PU coated stents with DTX loadings of 1.92 and 2.79% w/w. Mechanical testing of the DTX-PU coated stents revealed that an increase in the drug loading resulted in a reduction in the ultimate tensile strength, toughness and Young’s modulus. In vitro release studies showed a sustained release of DTX, with ~80–90% released over a period of 33 days. While the DTX-loaded stents exhibited good stability to gamma radiation sterilisation, UV sterilisation or accelerated storage at elevated temperatures (40 °C) resulted in significant DTX degradation. Cell proliferation, apoptosis and Western blotting assays revealed that the DTX released from the stents had comparable anticancer activity to pure DTX against oesophageal cancer cells (KYSE-30). This research demonstrates that the dip-coating technique can be considered as a promising approach for the fabrication of drug-eluting stents (DESs) for oesophageal cancer treatment.
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Affiliation(s)
- Paris Fouladian
- Pharmaceutical Innovation and Development (PIDG) Group, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.F.); (M.A.); (Y.S.)
| | - Qiuyang Jin
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China;
| | - Mohammad Arafat
- Pharmaceutical Innovation and Development (PIDG) Group, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.F.); (M.A.); (Y.S.)
| | - Yunmei Song
- Pharmaceutical Innovation and Development (PIDG) Group, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.F.); (M.A.); (Y.S.)
| | - Xiuli Guo
- Key Laboratory of Chemical Biology (Ministry of Education), Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China;
- Correspondence: (X.G.); (A.B.); (S.G.)
| | - Anton Blencowe
- Applied Chemistry and Translational Biomaterials (ACTB) Group, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia
- Correspondence: (X.G.); (A.B.); (S.G.)
| | - Sanjay Garg
- Pharmaceutical Innovation and Development (PIDG) Group, Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.F.); (M.A.); (Y.S.)
- Correspondence: (X.G.); (A.B.); (S.G.)
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Influence of Polymer Composition on the Controlled Release of Docetaxel: A Comparison of Non-Degradable Polymer Films for Oesophageal Drug-Eluting Stents. Pharmaceutics 2020; 12:pharmaceutics12050444. [PMID: 32403329 PMCID: PMC7284596 DOI: 10.3390/pharmaceutics12050444] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/08/2020] [Accepted: 05/08/2020] [Indexed: 12/13/2022] Open
Abstract
Following the huge clinical success of drug-eluting vascular stents, there is a significant interest in the development of drug-eluting stents for other applications, such as the treatment of gastrointestinal (GI) cancers. Central to this process is understanding how particular drugs are released from stent coatings, which to a large extent is controlled by drug-polymer interactions. Therefore, in this study we investigated the release of docetaxel (DTX) from a selection of non-degradable polymer films. DTX-polymer films were prepared at various loadings (1, 5 and 10% w/w) using three commercially available polymers including poly(dimethylsiloxane) (PSi), poly (ethylene-co-vinyl acetate) (PEVA) and Chronosil polyurethane (PU). The formulations were characterised using different techniques such as photoacoustic Fourier-transform infrared (PA-FTIR) spectrophotometry, X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The effect of DTX on the mechanical properties of the films, in-vitro release, and degradation tests were also assessed. For all polymers and DTX loadings, the drug was found to disperse homogenously without crystallisation within the polymer matrix. While no specific interactions were observed between DTX and PSi or PEVA, hydrogen-bonding appeared to be present between DTX and PU, which resulted in a concentration-dependent decrease in the Young’s moduli of the films due to disruption of inter-polymeric molecular interactions. In addition, the DTX-PU interactions were found to modulate drug release, providing near-linear release over 30 days, which was accompanied by a significant reduction in degradation products. The results indicate that DTX-loaded PU films are excellent candidates for drug-eluting stents for the treatment of oesophageal cancer.
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Arafat M, Fouladian P, Blencowe A, Albrecht H, Song Y, Garg S. Drug-eluting non-vascular stents for localised drug targeting in obstructive gastrointestinal cancers. J Control Release 2019; 308:209-231. [DOI: 10.1016/j.jconrel.2019.07.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/02/2019] [Accepted: 07/03/2019] [Indexed: 02/08/2023]
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15
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Balloon-Expandable Biodegradable Stents Versus Self-Expandable Metallic Stents: A Comparison Study of Stent-Induced Tissue Hyperplasia in the Rat Urethra. Cardiovasc Intervent Radiol 2019; 42:1343-1351. [DOI: 10.1007/s00270-019-02239-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 05/02/2019] [Indexed: 01/26/2023]
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16
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Chen W, di Carlo C, Devery D, McGrath DJ, McHugh PE, Kleinsteinberg K, Jockenhoevel S, Hennink WE, Kok RJ. Fabrication and characterization of gefitinib-releasing polyurethane foam as a coating for drug-eluting stent in the treatment of bronchotracheal cancer. Int J Pharm 2018; 548:803-811. [DOI: 10.1016/j.ijpharm.2017.10.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 09/25/2017] [Accepted: 10/11/2017] [Indexed: 11/25/2022]
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17
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Han CM, Park KS, Joung YK. Recent alternative approaches of vascular drug-eluting stents. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2017. [DOI: 10.1007/s40005-017-0378-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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18
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Dkhar LK, Bartley J, White D, Seyfoddin A. Intranasal drug delivery devices and interventions associated with post-operative endoscopic sinus surgery. Pharm Dev Technol 2017; 23:282-294. [DOI: 10.1080/10837450.2017.1389956] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Lari K. Dkhar
- Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Jim Bartley
- Bio Design Lab, School of Engineering, Auckland University of Technology, Auckland, New Zealand
- Counties Manukau District Health Board, Auckland, New Zealand
- Department of Surgery, University of Auckland, Auckland, New Zealand
| | - David White
- Counties Manukau District Health Board, Auckland, New Zealand
| | - Ali Seyfoddin
- Drug Delivery Research Group, School of Science, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
- Bio Design Lab, School of Engineering, Auckland University of Technology, Auckland, New Zealand
- School of Interprofessional Health Studies, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
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19
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Recent developments in drug eluting devices with tailored interfacial properties. Adv Colloid Interface Sci 2017; 249:181-191. [PMID: 28532663 DOI: 10.1016/j.cis.2017.05.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 11/23/2022]
Abstract
Drug eluting devices have greatly evolved during past years to become fundamental products of great marketing importance in the biomedical field. There is currently a large diversity of highly specialized devices for specific applications, making the development of these devices an exciting field of research. The replacement of the former bare metal devices by devices loaded with drugs allowed the sustained and controlled release of drugs, to achieve the desired local therapeutic concentration of drug. The newer devices have been "engineered" with surfaces containing micro- and nanoscale features in a well-controlled manner, that have shown to significantly affect cellular and subcellular function of various biological systems. For example, the topography can be structured to form an antifouling surface mimicking the defense mechanisms found in nature, like the skin of the shark. In the case of bone implants, well-controlled nanostructured interfaces can promote osteoblast differentiation and matrix production, and enhance short-term and long-term osteointegration. In any case, the goal of current research is to design implants that induce controlled, guided, and rapid healing. This article reviews recent trends in the development of drug eluting devices, as well as recent developments on the micro/nanotechnology scales, and their future challenges. For this purpose medical devices have been divided according to the different systems of the body they are focused to: orthopedic devices, breathing stents, gastrointestinal and urinary systems, devices for cardiovascular diseases, neuronal implants, and wound dressings.
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Kim KY, Park JH, Kim DH, Tsauo J, Kim MT, Son WC, Kang SG, Kim DH, Song HY. Sirolimus-eluting Biodegradable Poly-l-Lactic Acid Stent to Suppress Granulation Tissue Formation in the Rat Urethra. Radiology 2017; 286:140-148. [PMID: 28787263 DOI: 10.1148/radiol.2017170414] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Purpose To investigate the use of sirolimus-eluting biodegradable stents (SEBSs) to suppress granulation tissue formation after stent placement in a rat urethral model. Materials and Methods All experiments were approved by the animal research committee. A total of 36 male Sprague-Dawley rats were randomized into three equal groups after biodegradable stent placement. Group A received control biodegradable stents. Groups B and C received stents coated with 90 µg/cm2 and 450 µg/cm2 sirolimus, respectively. Six rats in each group were sacrificed after 4 weeks; the remaining rats were sacrificed after 12 weeks. The therapeutic effectiveness of SEBSs was assessed by comparing the results of retrograde urethrography and histologic examination. Analysis of variance with post hoc comparisons was used to evaluate statistical differences. Results SEBS placement was technically successful in all rats. Urethrographic and histologic examinations revealed significantly less granulation tissue formation at both time points in the rats receiving SEBSs (groups B and C) compared with those that received control stents (group A) (P < .05 for all). There were no significant differences in urethrographic and histologic findings between groups B and C (P > .05 for all). However, the mean number of epithelial layers in group B was higher than that in group C at 4 weeks after stent placement (P < .001). Apoptosis increased in group C compared with groups A and B (P < .05 for all). Conclusion The use of SEBSs suppressed granulation tissue formation secondary to stent placement in a rat urethral model; local therapy with SEBSs may be used to decrease stent-related granulation tissue formation. © RSNA, 2017.
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Affiliation(s)
- Kun Yung Kim
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Jung-Hoon Park
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Do Hoon Kim
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Jiaywei Tsauo
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Min Tae Kim
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Woo-Chan Son
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Sung-Gwon Kang
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Dong-Hyun Kim
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
| | - Ho-Young Song
- From the Department of Radiology and Research Institute of Radiology (K.Y.K., J.H.P., J.T., M.T.K., S.G.K., H.Y.S.), Biomedical Engineering Research Center (J.H.P.), Department of Gastroenterology (Do Hoon Kim), and Department of Pathology (W.C.S.), Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 138-736, Republic of Korea; and Department of Radiology, Northwestern University Feinberg School of Medicine, Chicago, Ill (J.H.P., Dong-Hyun Kim)
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Yun D, Kim HO, Son HY, Choi Y, Noh I, Lim JW, Kim J, Chun H, Park G, Lee DK, Jang SI, Jang E, Huh YM, Haam S. Stent containing CD44-targeting polymeric prodrug nanoparticles that release paclitaxel and gemcitabine in a time interval-controlled manner for synergistic human biliary cancer therapy. J Mater Chem B 2017; 5:6317-6324. [PMID: 32264448 DOI: 10.1039/c7tb00356k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The use of drug-eluting stents (DESs) is a promising strategy for non-vascular diseases, especially human biliary cancer. However, the implementation of DESs suffers from two major obstacles: the side effects of drugs and the difficulty of controlling the drug release. These problems can be overcome if the stent elutes targeting nanoparticles that release drugs at time intervals that are dictated by the mechanisms of those drugs. We designed temporally controlled polymeric multi-prodrug nanoparticles (TCMPNs) that can be eluted from stents comprising polyurethane (PU) nanofiber as a polymeric matrix and paclitaxel (PTX)-loaded, CD44-targeting, hyaluronic acid-conjugated poly(lactic-co-glycolic acid) and gemcitabine (GEM) (P-H-G). TCMPNs enable two different types of drugs to be released temporally; PTX is released first owing to the collapse of the structure in the endosomes, and GEM, which induces synergistic anticancer activities, is hydrolyzed from P-H-G later in response to low pH. Embedded in the PU nanofiber, the TCMPNs demonstrate low initial burst behavior and sustainable release of the prodrug in vitro. Furthermore, TCMPN-eluting stents (TESs) exhibit continuous synergistic efficacy as available targeted cellular uptake prodrug delivery systems in tumor-bearing mice. These results demonstrate that this technology will open up cancer therapy by combining localized delivery and functional multi-drug-loaded nanoparticles.
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Affiliation(s)
- Dayeon Yun
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, Republic of Korea.
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Jun EJ, Park JH, Tsauo J, Yang SG, Kim DK, Kim KY, Kim MT, Yoon SH, Lim YJ, Song HY. EW-7197, an activin-like kinase 5 inhibitor, suppresses granulation tissue after stent placement in rat esophagus. Gastrointest Endosc 2017; 86:219-228. [PMID: 28137596 DOI: 10.1016/j.gie.2017.01.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/10/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Self-expanding metallic stent (SEMS) placement is a well-established method for treating malignant esophageal strictures; however, this procedure has not gained widespread acceptance for treating benign esophageal strictures because of granulation tissue formation. The aim of the present study was to investigate whether EW-7197, a novel per-oral transforming growth factor-β type I receptor kinase inhibitor, suppressed granulation tissue formation after SEMS placement in the rat esophagus. METHODS Sixty rats underwent SEMS placement and were randomly divided into 4 groups. Group A (n = 20) received vehicle-treated control for 4 weeks. Group B (n = 20) received 20 mg/kg/day EW-7197 for 4 weeks. Group C (n = 10) received 20 mg/kg/day EW-7197 for 4 weeks followed by vehicle-treated control for 4 weeks. Group D (n = 10) received 20 mg/kg/day EW-7197 for 8 weeks. RESULTS SEMS placement was technically successful in all rats. Eleven rats, however, were excluded because of stent migration (n = 9) and procedure-related death (n = 2). The luminal diameter in group A was significantly smaller than those in groups B, C, and D (all P < .001). The percentage of granulation tissue area, number of epithelial layers, thickness of submucosal fibrosis, percentage of connective tissue area, and degree of collagen deposition were significantly higher in group A than in groups B, C, and D (all P < .001); however, there were no significant differences among groups B, C, and D. EW-7197 decreased the expression levels of phospho-Smad 3, N-cadherin, fibronectin, α-smooth muscle actin, and transforming growth factor-β1 and increased the expression level of E-cadherin (all P < .01). CONCLUSIONS EW-7197 suppressed granulation tissue formation after SEMS placement in the rat esophagus.
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Affiliation(s)
- Eun Jung Jun
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jung-Hoon Park
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea; Biomedical Engineering Research Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jiaywei Tsauo
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Su-Geun Yang
- Department of New Drug Development and NCEED, School of Medicine, Inha University, Incheon, Republic of Korea
| | - Dae-Kee Kim
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Women's University, Seoul, Republic of Korea
| | - Kun Yung Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Min Tae Kim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sung-Hwan Yoon
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Young Je Lim
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Ho-Young Song
- Department of Radiology and Research Institute of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Aguilar LE, GhavamiNejad A, Park CH, Kim CS. On-demand drug release and hyperthermia therapy applications of thermoresponsive poly-(NIPAAm-co-HMAAm)/polyurethane core-shell nanofiber mat on non-vascular nitinol stents. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:527-538. [DOI: 10.1016/j.nano.2016.12.012] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 11/23/2016] [Accepted: 12/07/2016] [Indexed: 11/28/2022]
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Shaikh M, Zhang H, Wang H, Guo X, Song Y, Kanwar JR, Garg S. In Vitro and In Vivo Assessment of Docetaxel Formulation Developed for Esophageal Stents. AAPS PharmSciTech 2017; 18:130-137. [PMID: 26895019 DOI: 10.1208/s12249-016-0501-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 02/08/2016] [Indexed: 12/13/2022] Open
Abstract
Esophageal cancer (EC) mostly affects the elderly population and is frequently diagnosed at an advanced stage. Self-expanding metal stents (SEMS) are the most popular mode of palliation, but they are associated with reocclusion caused by tumor growth. To overcome this problem, docetaxel (DTX)-loaded polyurethane formulations were prepared for stent application. The films were evaluated against the cancer cell lines, OE-19 and OE-21, and normal esophageal cell line Het-1A. The DTX and the formulations were evaluated in vitro for the cytotoxicity and in vivo in nude mice. It was found that DTX and the formulations have a weak activity against the EC cell lines and an even weaker activity against Het-1A cell line. Preliminary in vivo studies showed skin toxicity in nude mice necessitating modification of the formulation. Reevaluation in a mouse xenograft model resulted in toxicity at high dose formulations while the low dose formulation exhibited modest advantage over commercial IV formulation; however, there was no significant difference between the commercial IV and blank formulation. DTX combination with an anti-cancer agent having complementary mode of action and non-overlapping toxicity could yield better outcome in future.
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Affiliation(s)
- Mohsin Shaikh
- Centre for Pharmaceutical Innovation and Development (CPID), School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, 5000, Australia
| | - Huihui Zhang
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, People's Republic of China
| | - Hongyuan Wang
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, People's Republic of China
| | - Xiuli Guo
- Department of Pharmacology, School of Pharmaceutical Sciences, Shandong University, Jinan, 250100, People's Republic of China
| | - Yunmei Song
- Centre for Pharmaceutical Innovation and Development (CPID), School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, 5000, Australia
| | - Jagat Rakesh Kanwar
- Nanomedicine-Laboratory of Immunology and Molecular Biomedical Research, School of Medicine, Faculty of Health, Centre for Molecular and Medical Research, Deakin University, Pigdons Road, Waurn Ponds, Geelong, Victoria, 3216, Australia
| | - Sanjay Garg
- Centre for Pharmaceutical Innovation and Development (CPID), School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, 5000, Australia.
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25
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Preparation of a Microporous Polyurethane Film with Negative Surface Charge for siRNA Delivery via Stent. INT J POLYM SCI 2017. [DOI: 10.1155/2017/2841682] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Polyurethane (PU) and polyethylene glycol (PEG) were used to prepare a porous stent-covering material for the controlled delivery of small interfering RNA (siRNA). Microporous polymer films were prepared using a blend of polyurethane and water-soluble polyethylene glycol by the solution casting method; the PEG component was extracted in water to make the film microporous. This film was dipped in 2% poly(methyl methacrylate-co-methacrylic acid) solution to coat the polymer film with the anionic polyelectrolyte. The chemical components of the film surface were characterized by Fourier Transform Infrared (FTIR) spectroscopy and its structural morphology was examined by scanning electron microscopy (SEM). The effect of the negatively charged surface after attachment of a fluorescein isothiocyanate- (FITC-) labeled siRNA-polyethyleneimine complex onto the microporous polyurethane film and the controlled release of the complex from the film was investigated by fluorescence microscopy. Fluorescence microscopy showed the PU surface with intense fluorescence by the aggregates of the FITC-labeled-siRNA-PEI complex (measuring up to few microns in size); additionally, the negatively charged PU surface revealed broad and diffuse fluorescence. These results suggest that the construction of negatively charged microporous polyurethane films is feasible and could be applied for enhancing the efficiency of siRNA delivery via a stent-covering polyurethane film.
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Barros AA, Browne S, Oliveira C, Lima E, Duarte ARC, Healy KE, Reis RL. Drug-eluting biodegradable ureteral stent: New approach for urothelial tumors of upper urinary tract cancer. Int J Pharm 2016; 513:227-237. [PMID: 27590593 DOI: 10.1016/j.ijpharm.2016.08.061] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 08/04/2016] [Accepted: 08/29/2016] [Indexed: 10/21/2022]
Abstract
Upper urinary tract urothelial carcinoma (UTUC) accounts for 5-10% of urothelial carcinomas and is a disease that has not been widely studied as carcinoma of the bladder. To avoid the problems of conventional therapies, such as the need for frequent drug instillation due to poor drug retention, we developed a biodegradable ureteral stent (BUS) impregnated by supercritical fluid CO2 (scCO2) with the most commonly used anti-cancer drugs, namely paclitaxel, epirubicin, doxorubicin, and gemcitabine. The release kinetics of anti-cancer therapeutics from drug-eluting stents was measured in artificial urine solution (AUS). The in vitro release showed a faster release in the first 72h for the four anti-cancer drugs, after this time a plateau was achieved and finally the stent degraded after 9days. Regarding the amount of impregnated drugs by scCO2, gemcitabine showed the highest amount of loading (19.57μg drug/mg polymer: 2% loaded), while the lowest amount was obtained for paclitaxel (0.067μg drug/mg polymer: 0.01% loaded). A cancer cell line (T24) was exposed to graded concentrations (0.01-2000ng/ml) of each drugs for 4 and 72h to determine the sensitivities of the cells to each drug (IC50). The direct and indirect contact study of the anti-cancer biodegradable ureteral stents with the T24 and HUVEC cell lines confirmed the anti-tumoral effect of the BUS impregnated with the four anti-cancer drugs tested, reducing around 75% of the viability of the T24 cell line after 72h and demonstrating minimal cytotoxic effect on HUVECs.
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Affiliation(s)
- Alexandre A Barros
- 3B́s Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark-Parque de Ciência e Tecnologia, 4805-017 Barco GMR, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal; Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
| | - Shane Browne
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA 94720, USA; Centre for Research in Medical Devices (CÚRAM), National University of Ireland Galway, Ireland
| | - Carlos Oliveira
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal; Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Estevão Lima
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal; Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal
| | - Ana Rita C Duarte
- 3B́s Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark-Parque de Ciência e Tecnologia, 4805-017 Barco GMR, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal.
| | - Kevin E Healy
- Departments of Bioengineering and Materials Science and Engineering, University of California, Berkeley, CA 94720, USA
| | - Rui L Reis
- 3B́s Research Group-Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, Avepark-Parque de Ciência e Tecnologia, 4805-017 Barco GMR, Portugal; ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, Portugal
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Seo J, Lee J, Na K. Polymeric materials for drug release system in drug eluting stents. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2016. [DOI: 10.1007/s40005-016-0251-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Effect of polymer microstructure on the docetaxel release and stability of polyurethane formulation. Eur J Pharm Biopharm 2016; 101:82-9. [PMID: 26829379 DOI: 10.1016/j.ejpb.2016.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 12/12/2015] [Accepted: 01/20/2016] [Indexed: 11/20/2022]
Abstract
PurSil®AL20 (PUS), a copolymer of 4,4'-dicyclohexylmethane diisocyanate (HMDI), 1,4-butane diol (BD), poly-tetramethylene oxide (PTMO) and poly-dimethyl siloxane (PDMS) was investigated for stability as a vehicle for Docetaxel (DTX) delivery through oesophageal drug eluting stent (DES). On exposure to stability test conditions, it was found that DTX release rate declined at 4 and 40 °C. In order to divulge reasons underlying this, changes in DTX solid state as well as PUS microstructure were followed. It was found that re-crystallization of DTX in PDMS rich regions was reducing the drug release at both 4 °C and 40 °C samples. So far microstructural features have not been correlated with stability and drug release, and in this study we found that at 40 °C increase in microstructural domain sizes and the inter-domain distances (from ∼85 Å to 129 Å) were responsible for hindering the DTX release in addition to DTX re-crystallization.
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Shaikh M, Choudhury NR, Knott R, Garg S. Engineering Stent Based Delivery System for Esophageal Cancer Using Docetaxel. Mol Pharm 2015; 12:2305-17. [PMID: 25936529 DOI: 10.1021/mp500851u] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Esophageal cancer patients are often diagnosed as "advanced" cases. These patients are subjected to palliative stenting using self-expanding metallic stents (SEMS) to maintain oral alimentation. Unfortunately, SEMS get reoccluded due to tumor growth, in and over the stent struts. To investigate potential solutions to this problem, docetaxel (DTX) delivery films were prepared using PurSil AL 20 (PUS), which can be used as a covering material for the SEMS. Drug-polymer miscibility and interactions were studied. Bilayer films were prepared by adhering the blank film to the DTX loaded film in order to maintain the unidirectional delivery to the esophagus. In vitro release and the local DTX delivery were studied using in vitro permeation experiments. It was found that DTX and PUS were physically and chemically compatible. The bilayer films exhibited sustained release (>30 days) and minimal DTX permeation through esophageal tissues in vitro. The rate-determining step for the DTX delivery was calculated. It was found that >0.9 fraction of rate control lies with the esophageal tissues, suggesting that DTX delivery can be sustained for longer periods compared to the in vitro release observed. Thus, the bilayer films can be developed as a localized sustained delivery system in combination with the stent.
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Affiliation(s)
- Mohsin Shaikh
- †Centre for Pharmaceutical Innovation and Development (CPID), School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5000, Australia
| | - Namita Roy Choudhury
- ‡Ian Wark Research Institute, University of South Australia, Mawson Lakes Campus, Mawson Lakes, South Australia 5095, Australia
| | - Robert Knott
- §ANSTO, Locked Bag 2001, Kirrawee, New South Wales 2232, Australia
| | - Sanjay Garg
- †Centre for Pharmaceutical Innovation and Development (CPID), School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia 5000, Australia
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Bai XY, Yan Y, Wang L, Zhao LG, Wang K. Novel pH-sensitive hydrogels for 5-aminosalicylic acid colon targeting delivery: in vivo study with ulcerative colitis targeting therapy in mice. Drug Deliv 2015; 23:1926-32. [PMID: 25693641 DOI: 10.3109/10717544.2014.996924] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Current guidelines recommend patients with active and mild-to-moderate ulcerative colitis (UC), who have received initial therapy with 5-aminosalicylic acid (5-ASA). In this study, a novel drug delivery vehicle achieved by pH-sensitive hydrogels was applied to 5-ASA. In our previous work, a novel P(CE-MAA-MEG) pH-sensitive hydrogel was successfully synthesized by the heat-initiated free radical polymerization method. The aim of this study is to investigate its site-specific delivering of drugs to the colon and evaluate its colon-targeting characteristic in vivo. 5-ASA was chosen as a model drug and successfully loaded in the hydrogel. In vitro investigations were carried out to evaluate its release process. Above all, animal treatment results reveal an obvious effect on the UC healing. Therefore, all results suggested that the developed 5-ASA-P(CE-MAA-MEG) hydrogel (5-ASA-GEL) as a colon-targeting vector might have a great potential application in the UC therapy.
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Affiliation(s)
- Xia Yan Bai
- a Department of Otorhinolaryngology Head and Neck Surgery, First Affiliated Hospital of Xi'an Jiaotong University , Xi' an , China
| | - Yan Yan
- b School of Pharmacy, Xi'an Jiaotong University , Xi' an , China , and
| | - Lin Wang
- c The Central Hospital of Xi' an Huashan , Xi' an , China
| | - Lan Gui Zhao
- b School of Pharmacy, Xi'an Jiaotong University , Xi' an , China , and
| | - Ke Wang
- b School of Pharmacy, Xi'an Jiaotong University , Xi' an , China , and
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Magaña H, Palomino K, Cornejo-Bravo JM, Alvarez- Lorenzo C, Concheiro A, Bucio E. Radiation-grafting of acrylamide onto silicone rubber films for diclofenac delivery. Radiat Phys Chem Oxf Engl 1993 2015. [DOI: 10.1016/j.radphyschem.2014.10.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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32
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Aguilar LE, Unnithan AR, Amarjargal A, Tiwari AP, Hong ST, Park CH, Kim CS. Electrospun polyurethane/Eudragit ® L100-55 composite mats for the pH dependent release of paclitaxel on duodenal stent cover application. Int J Pharm 2014; 478:1-8. [PMID: 25445536 DOI: 10.1016/j.ijpharm.2014.10.057] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 01/27/2023]
Abstract
A nanofiber composite mat of PU and Eudragit(®) L100-55 was created using electrospinning process. The pH dependent release of paclitaxel was successfully done with the use of PU/EL100-55 nanocomposite mats as the controlling platform. The morphology of the nanofiber composites was surveyed using FESEM and ratios of the polymers affects the diameter of the nanofiber. Characterization of the nanofiber composite mat was done using FTIR, DSC-TGA method. The release rate of paclitaxel was determined and analyzed by in vitro drug release method. In order to mimic the condition of a human duodenum, the fibers were submersed on PBS of different pH levels (4.0, 6.0,) respectively, and then analyzed using high performance liquid chromatography (HPLC). Composite mats submersed in PBS with pH 4.0 showed lesser release profile compared to mats submersed in PBS with pH of 6.0. The composite mat has adequate mechanical properties and in vitro cell biocompatibility indicating that the material can be used for drug eluting stent cover application.
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Affiliation(s)
- Ludwig Erik Aguilar
- Department of Bionanosystem Engineering Graduate School, Chonbuk National University, Jeonju City, Republic of Korea
| | - Afeesh Rajan Unnithan
- Department of Bionanosystem Engineering Graduate School, Chonbuk National University, Jeonju City, Republic of Korea; Division of Mechanical Design Engineering, Chonbuk National University, Jeonju City, Republic of Korea
| | - Altangerel Amarjargal
- Department of Bionanosystem Engineering Graduate School, Chonbuk National University, Jeonju City, Republic of Korea; Power Engineering School, Mongolian University of Science and Technology, Ulaanbaatar, Mongolia
| | - Arjun Prasad Tiwari
- Department of Microbiology and Genetics, Medical School, Chonbuk National University, Jeonju City, Republic of Korea
| | - Seong Tshool Hong
- Department of Microbiology and Genetics, Medical School, Chonbuk National University, Jeonju City, Republic of Korea
| | - Chan Hee Park
- Department of Bionanosystem Engineering Graduate School, Chonbuk National University, Jeonju City, Republic of Korea; Division of Mechanical Design Engineering, Chonbuk National University, Jeonju City, Republic of Korea; Eco-friendly Machine Parts Design Research Center, Chonbuk National University, Jeonju City, Republic of Korea.
| | - Cheol Sang Kim
- Department of Bionanosystem Engineering Graduate School, Chonbuk National University, Jeonju City, Republic of Korea; Division of Mechanical Design Engineering, Chonbuk National University, Jeonju City, Republic of Korea; Eco-friendly Machine Parts Design Research Center, Chonbuk National University, Jeonju City, Republic of Korea.
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