1
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Zhao Y, Le TMD, Hong J, Jiao A, Yoon AR, Yun CO. Smart Accumulating Dual-Targeting Lipid Envelopes Equipping Oncolytic Adenovirus for Enhancing Cancer Gene Therapeutic Efficacy. ACS NANO 2024. [PMID: 39356167 DOI: 10.1021/acsnano.4c02165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/03/2024]
Abstract
Systemic delivery of oncolytic adenovirus (oAd) for cancer gene therapy must overcome several limitations such as rapid clearance from the blood, nonspecific accumulation in the liver, and insufficient delivery to the tumor tissues. In the present report, a tumor microenvironment-triggered artificial lipid envelope composed of a pH-responsive sulfamethazine-based polymer (PUSSM)-conjugated phospholipid (DOPE-HZ-PUSSM) and another lipid decorated with epidermal growth factor receptor (EGFR) targeting peptide (GE11) (GE11-DOPE) was utilized to encapsulate replication-incompetent Ad (dAd) or oAd coexpressing short-hairpin RNA (shRNA) against Wnt5 (shWnt5) and decorin (dAd/LP-GE-PS or oAd/LP-GE-PS, respectively). In vitro studies demonstrated that dAd/LP-GE-PS transduced breast cancer cells in a pH-responsive and EGFR-specific manner, showing a higher level of transduction than naked Ad under a mildly acidic pH of 6.0 in EGFR-positive cell lines. In vivo biodistribution analyses revealed that systemic administration of oAd/LP-GE-PS leads to a significantly higher level of intratumoral virion accumulation compared to naked oAd, oAd encapsulated in a liposome without PUSSM or EGFR targeting peptide moiety (oAd/LP), or oAd encapsulated in a liposome with EGFR targeting peptide alone (oAd/LP-GE) in an EGFR overexpressing MDA-MB-468 breast tumor xenograft model, showing that both pH sensitivity and EGFR targeting ability were integral to effective systemic delivery of oAd. Further, systemic administration of all liposomal oAd formulations (oAd/LP, oAd/LP-GE, and oAd/LP-GE-PS) showed significantly attenuated hepatic accumulation of the virus compared to naked oAd. Collectively, our findings demonstrated that pH-sensitive and EGFR-targeted liposomal systemic delivery of oAd can be a promising strategy to address the conventional limitations of oAd to effectively treat EGFR-positive cancer in a safe manner.
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Affiliation(s)
- Yuebin Zhao
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, South Korea
| | - Thai Minh Duy Le
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, South Korea
| | - Jinwoo Hong
- GeneMedicine CO., Ltd., Seoul 04763, South Korea
| | - Ao Jiao
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, South Korea
| | - A-Rum Yoon
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, South Korea
- Institute of Nano Science and Technology (INST), Hanyang University, Seoul 04763, South Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul 04763, South Korea
| | - Chae-Ok Yun
- Department of Bioengineering, College of Engineering, Hanyang University, Seoul 04763, South Korea
- Institute of Nano Science and Technology (INST), Hanyang University, Seoul 04763, South Korea
- Hanyang Institute of Bioscience and Biotechnology (HY-IBB), Hanyang University, Seoul 04763, South Korea
- GeneMedicine CO., Ltd., Seoul 04763, South Korea
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2
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Xu R, Yang X, Yi T, Tan T, Li Z, Feng X, Rao J, Zhou P, Hu H, Zhan Y. Injectable temperature-sensitive hydrogel facilitating endoscopic submucosal dissection. Front Bioeng Biotechnol 2024; 12:1395731. [PMID: 38742205 PMCID: PMC11089129 DOI: 10.3389/fbioe.2024.1395731] [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: 03/04/2024] [Accepted: 04/10/2024] [Indexed: 05/16/2024] Open
Abstract
Purpose: Early gastrointestinal tumors can be removed by endoscopic procedures. Endoscopic mucosal dissection (ESD) requires submucosal fluid injection to provide mucosal elevation and prevent intraoperative perforation. However, the clinically applied normal saline mucosal elevation height is low for a short time, which often requires multiple intraoperative injections that increase the inconvenience and procedure time. In addition, recently researched submucosal injection materials (SIM) suffer from complex preparation, poor economy, and poor biocompatibility. Therefore, there is an urgent need for a new type of SIM that can provide long, safe and effective mucosal elevation in support of the endoscopic procedures. Methods: The FS hydrogel is based on polyethylene-polypropylene glycol (F-127) mixed with sodium alginate (SA). The different physicochemical properties of FS hydrogels were characterized through various experiments. Afterward, various biosafety assessments were carried out. Finally, the performance of FS hydrogels was evaluated by in vitro submucosal injection and in vivo swine ESD. Results: The experimental results show that the FS hydrogel is liquid at room temperature, making it easy to inject, and when injected under the mucosa, it undergoes temperature-induced cross-linking, transforming from a liquid to a solid state to provide long-lasting mucosal augmentation. At the same time, the FS hydrogel exhibits controllable gelation, stability, and biocompatibility. The results of in vitro submucosal injections and in vivo ESD procedures showed that FS achieves high mucosal augmentation and provides good submucosal cushioning in the long term. Conclusion: In summary, the F-127/SA hydrogel is simple to synthesize, cost-effective, safe, easy to store, and able to assist ESD well from the perspective of practical clinical problems, indicating that the FS hydrogel can be an ideal potent submucosal injection substitution.
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Affiliation(s)
- Ruifen Xu
- Anesthesiology Department, Shaanxi Provincial People’s Hospital, Xi’an, Shaanxi, China
| | - Xiaoyu Yang
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, China
| | - Tong Yi
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, China
| | - Tao Tan
- University of Shanghai for Science and Technology, Shanghai, China
- Endoscopy Center and Endoscopy Research Institute, Shanghai Collaborative Innovation Center of Endoscopy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zhongqi Li
- Endoscopy Center and Endoscopy Research Institute, Shanghai Collaborative Innovation Center of Endoscopy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Xuyang Feng
- Department of Cardiology, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi, China
| | - Jing Rao
- Anesthesiology Department, Shaanxi Provincial People’s Hospital, Xi’an, Shaanxi, China
| | - Pinghong Zhou
- Endoscopy Center and Endoscopy Research Institute, Shanghai Collaborative Innovation Center of Endoscopy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hao Hu
- Endoscopy Center and Endoscopy Research Institute, Shanghai Collaborative Innovation Center of Endoscopy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yonghua Zhan
- Engineering Research Center of Molecular and Neuro Imaging of the Ministry of Education, School of Life Science and Technology, Xidian University, Xi’an, Shaanxi, China
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Ai S, Gao Q, Cheng G, Zhong P, Cheng P, Ren Y, Wang H, Zhu X, Guan S, Qu X. Construction of an Injectable Composite Double-Network Hydrogel as a Liquid Embolic Agent. Biomacromolecules 2024; 25:2052-2064. [PMID: 38426456 DOI: 10.1021/acs.biomac.3c01437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Conventional embolists disreputably tend to recanalization arising from the low filling ratio due to their rigidity or instability. As a result, intelligent hydrogels with a tunable modulus may meaningfully improve the therapeutic efficacy. Herein, an injectable composite double-network (CDN) hydrogel with high shear responsibility was prepared as a liquid embolic agent by cross-linking poly(vinyl alcohol) (PVA) and carboxymethyl chitosan (CMC) via dynamic covalent bonding of borate ester and benzoic-imine. A two-dimensional nanosheet, i.e., layered double hydroxide (LDH), was incorporated into the network through physical interactions which led to serious reduction of yield stress for the injection of the hydrogel and the capacity for loading therapeutic agents like indocyanine green (ICG) and doxorubicin (DOX) for the functions of photothermal therapy (PTT) and chemotherapy. The CDN hydrogel could thus be transported through a thin catheter and further in situ strengthened under physiological conditions, like in blood, by secondarily cross-linking with phosphate ions for longer degradation duration and better mechanical property. These characteristics met the requirements of arterial interventional embolization, which was demonstrated by renal embolism operation on rabbits, and meanwhile favored the inhibition of subcutaneous tumor growth on an animal model. Therefore, this work makes a breakthrough in the case of largely reducing the embolism risks, thus affording a novel generation for interventional embolization.
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Affiliation(s)
- Shili Ai
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Qinzong Gao
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Gele Cheng
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101408, China
- Duke Kunshan University, Suzhou, Jiangsu 215316, China
| | - Pengfei Zhong
- Hebei North University, Zhangjiakou, Hebei 075000, China
| | - Peiyu Cheng
- Department of Oncology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010, China
| | - Yingying Ren
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101408, China
| | - Hao Wang
- Department of Oncology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing 100010, China
| | - Xu Zhu
- Key Laboratory of Carcinogenesis and Translational Research, Peking University Cancer Hospital and Institute, Beijing 100142, China
| | - Shanyue Guan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Xiaozhong Qu
- Center of Materials Science and Optoelectronics Engineering, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing 101408, China
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4
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Chen Z, Ding J, Wu C, Wei D, Sun J, Fan H, Guo Z. A review of hydrogels used in endoscopic submucosal dissection for intraoperative submucosal cushions and postoperative management. Regen Biomater 2023; 10:rbad064. [PMID: 37501677 PMCID: PMC10368804 DOI: 10.1093/rb/rbad064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 06/02/2023] [Accepted: 06/14/2023] [Indexed: 07/29/2023] Open
Abstract
Endoscopic submucosal dissection (ESD) has been clinically proved to have prominent advantages in the treatment of early gastrointestinal cancers over traditional surgery, including less trauma, fewer complications, a quicker recovery and lower costs. During the procedure of ESD, appropriate and multifunctional submucosal injected materials (SIMs) as submucosal cushions play an important role, however, even with many advances in design strategies of SIMs over the past decades, the performance of the submucosal cushions with postoperative management function seems to be still unsatisfactory. In this review, we gave a brief historical recount about the clinical development of SIMs, then some common applications of hydrogels used as SIMs in ESD were summarized, while an account of the universal challenges during ESD procedure was also outlined. Going one step further, some cutting-edge functional strategies of hydrogels for novel applications in ESD were exhibited. Finally, we concluded the advantages of hydrogels as SIMs for ESD as well as the treatment dilemma clinicians faced when it comes to deeply infiltrated lesions, some technical perspectives about linking the clinical demand with commercial supply were also proposed. Encompassing the basic elements of SIMs used in ESD surgery and the corresponding postoperative management requirements, this review could be a good reference for relevant practitioners in expanding the research horizon and improving the well-being index of patients.
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Affiliation(s)
| | | | - Chengheng Wu
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610064, China
- Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu, Sichuan 610064, China
| | - Dan Wei
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610064, China
| | - Jing Sun
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu, Sichuan 610064, China
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5
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Thambi T, Jung JM, Lee DS. Recent strategies to develop pH-sensitive injectable hydrogels. Biomater Sci 2023; 11:1948-1961. [PMID: 36723174 DOI: 10.1039/d2bm01519f] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
"Smart" biomaterials that are responsive to pathological abnormalities are an appealing class of therapeutic platforms for the development of personalized medications. The development of such therapeutic platforms requires novel techniques that could precisely deliver therapeutic agents to the diseased tissues, resulting in enhanced therapeutic effects without harming normal tissues. Among various therapeutic platforms, injectable pH-responsive biomaterials are promising biomaterials that respond to the change in environmental pH. Aqueous solutions of injectable pH-responsive biomaterials exhibit a phase transition from sol-to-gel in response to environmental pH changes. The injectable pH-responsive hydrogel depot can provide spatially and temporally controlled release of various bioactive agents including chemotherapeutic drugs, peptides, and proteins. Therapeutic agents are imbibed into hydrogels by simple mixing without the use of toxic solvents and used for long-term storage or in situ injection using a syringe or catheter that could form a stable gel and acts as a controlled release depot in a minimally invasive manner. Tunable physicochemical properties of the hydrogels, such as biodegradability, ability to interact with drugs and mechanical properties, can control the release of the therapeutic agent. This review highlights the advances in the design and development of biodegradable and in situ forming injectable pH-responsive biomaterials that respond to the physiological conditions. Special attention has been paid to the development of amphoteric pH-responsive biomaterials and their utilization in biomedical applications. We also highlight key challenges and future directions of pH-responsive biomaterials in clinical translation.
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Affiliation(s)
- Thavasyappan Thambi
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Jae Min Jung
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
| | - Doo Sung Lee
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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6
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Ku JC, Dobashi Y, Pasarikovski CR, Ramjist J, Hamani C, Heyn C, Walus K, Yang VXD. Photosensitive Hydrogel-Based Embolic Agent Treatment of Wide-Necked Aneurysms: Preliminary Animal Results. Gels 2022; 8:gels8120788. [PMID: 36547312 PMCID: PMC9778217 DOI: 10.3390/gels8120788] [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: 10/01/2022] [Revised: 11/27/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022] Open
Abstract
Background: The endovascular treatment of cerebral aneurysms has become widespread but may still be limited by recurrence rates or complications. The discovery of novel embolic strategies may help mitigate these concerns. Methods: We formulated a Photosensitive Hydrogel Polymer (PHP) embolic agent which is low-viscosity, shear-thinning, and radio-opaque. After the filling of an aneurysm with PHP with balloon assistance, we utilized photopolymerization to induce solidification. Different methods of light delivery for photopolymerization were assessed in silicone models of aneurysms and in four acute animal trials with venous anastomosis aneurysms in pigs. Then, balloon-assisted embolization with PHP and photopolymerization was performed in three aneurysms in pigs with a one-month follow-up. Filling volume, recurrence rates, and complications were recorded. Results: The PHP was found to be suitable for the intravascular delivery and treatment of cerebral aneurysms. It was found that light delivery through the balloon catheter, as opposed to light delivery through the injection microcatheter, led to higher rates of filling in the 3D model and acute animal model for cerebral aneurysms. Using the balloon-assisted embolization and light delivery strategy, three wide-necked aneurysms were treated without complication. One-month follow-up showed no recurrence or neck remnants. Conclusions: We demonstrated a novel method of balloon-assisted photosensitive hydrogel polymer embolization and photopolymerization, leading to complete aneurysm filling with no recurrence at 1 month in three wide-necked aneurysms in pigs. This promising methodology will be investigated further with longer-term comparative animal trials.
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Affiliation(s)
- Jerry C. Ku
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON M5T 2S8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
- Correspondence:
| | - Yuta Dobashi
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
| | | | - Joel Ramjist
- Department of Electrical, Computer and Biomedical Engineering, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
| | - Clement Hamani
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON M5T 2S8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Chinthaka Heyn
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
- Division of Neuroradiology, Department of Radiology, University of Toronto, Toronto, ON M5T 1W7, Canada
| | - Konrad Walus
- Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
| | - Victor X. D. Yang
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Electrical, Computer and Biomedical Engineering, Toronto Metropolitan University, Toronto, ON M5B 2K3, Canada
- Division of Neurosurgery, Department of Clinical Neurological Sciences, Schulich School of Medicine, Western University, London, ON N6A 3K7, Canada
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7
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Breuer JA, Ahmed KH, Al-Khouja F, Macherla AR, Muthoka JM, Abi-Jaoudeh N. Interventional oncology: new techniques and new devices. Br J Radiol 2022; 95:20211360. [PMID: 35731848 PMCID: PMC9815742 DOI: 10.1259/bjr.20211360] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 05/20/2022] [Accepted: 05/27/2022] [Indexed: 01/13/2023] Open
Abstract
Interventional oncology is a rapidly emerging field in the treatment of cancer. Minimally invasive techniques such as transarterial embolization with chemotherapeutic and radioactive agents are established therapies and are found in multiple guidelines for the management of primary and metastatic liver lesions. Percutaneous ablation is also an alternative to surgery for small liver, renal, and pancreatic tumors. Recent research in the niche of interventional oncology has focused on improving outcomes of established techniques in addition to the development of novel therapies. In this review, we address the recent and current advancements in devices, technologies, and techniques of chemoembolization and ablation: thermal ablation, histotripsy, high-intensity focused ultrasound, embolization strategies, liquid embolic agents, and local immunotherapy/antiviral therapies.
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Affiliation(s)
| | | | | | | | | | - Nadine Abi-Jaoudeh
- Department of Radiological Sciences, University of California Irvine, Orange, USA
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8
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Emerging Polymer Materials in Trackable Endovascular Embolization and Cell Delivery: From Hype to Hope. Biomimetics (Basel) 2022; 7:biomimetics7020077. [PMID: 35735593 PMCID: PMC9221114 DOI: 10.3390/biomimetics7020077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/05/2022] [Accepted: 06/08/2022] [Indexed: 02/01/2023] Open
Abstract
Minimally invasive endovascular embolization is a widely used clinical technique used for the occlusion of blood vessels to treat various diseases. Different occlusive agents ranging from gelatin foam to synthetic polymers such as poly(vinyl alcohol) (PVA) have been commercially used for embolization. However, these agents have some drawbacks, such as undesired toxicity and unintended and uncontrolled occlusion. To overcome these issues, several polymer-based embolic systems are under investigation including biocompatible and biodegradable microspheres, gelling liquid embolic with controlled occlusive features, and trackable microspheres with enhanced safety profiles. This review aims to summarize recent advances in current and emerging polymeric materials as embolization agents with varying material architectures. Furthermore, this review also explores the potential of combining injectable embolic agents and cell therapy to achieve more effective embolization with the promise of outstanding results in treating various devastating diseases. Finally, limitations and challenges in developing next-generation multifunctional embolic agents are discussed to promote advancement in this emerging field.
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9
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Overstreet DJ, Lee EJ, Pal A, Vernon BL. In situ crosslinking temperature-responsive hydrogels with improved delivery, swelling, and elasticity for endovascular embolization. J Biomed Mater Res B Appl Biomater 2022; 110:1911-1921. [PMID: 35262274 DOI: 10.1002/jbm.b.35048] [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: 05/12/2021] [Revised: 02/02/2022] [Accepted: 02/22/2022] [Indexed: 11/11/2022]
Abstract
Endovascular embolization of cerebral aneurysms is a common approach for reducing the risk of often-fatal hemorrhage. However, currently available materials used to occlude these aneurysms provide incomplete filling (coils) or require a complicated, time-consuming delivery procedure (solvent-exchange precipitating polymers). The objective of this work was to develop an easily deliverable in situ forming hydrogel that can occlude the entire volume of an aneurysm. The hydrogel is formed by mixing a solution of a temperature-responsive polymer containing pendent thiol groups (poly(NIPAAm-co-cysteamine) or poly(NIPAAm-co-cysteamine-co-JAAm)) with a solution of poly(ethylene glycol) diacrylate (PEGDA). Incorporation of hydrophilic grafts of polyetheramine acrylamide (JAAm) in the temperature-responsive polymer caused weaker physical crosslinking, facilitated faster and more complete chemical crosslinking, and increased gel swelling. One formulation (30 wt % PNCJ20 + PEGDA) could be delivered for over 220 s after mixing, formed a strong and elastic hydrogel (G' > 6000 Pa) within 30 min and once set, maintained its shape and volume in a model aneurysm under flow. This gel represents a promising candidate water-based material utilizing both physical and chemical crosslinking that warrants further investigation as an embolic agent for saccular aneurysms.
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Affiliation(s)
- Derek J Overstreet
- School of Biological and Health Systems Engineering, Center for Interventional Biomaterials, Arizona State University, Tempe, Arizona, USA
| | - Elizabeth J Lee
- School of Biological and Health Systems Engineering, Center for Interventional Biomaterials, Arizona State University, Tempe, Arizona, USA
| | - Amrita Pal
- School of Biological and Health Systems Engineering, Center for Interventional Biomaterials, Arizona State University, Tempe, Arizona, USA
| | - Brent L Vernon
- School of Biological and Health Systems Engineering, Center for Interventional Biomaterials, Arizona State University, Tempe, Arizona, USA
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10
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Lu D, Yu L, Chen Z, Chen M, Lei Z, Guo H, Wang X, Zhang Y, Xu T, Wang H, Zhou X, Ju S, Teng G. A Simple and Efficient Embolization-Combined Therapy for Solid Tumors by Smart Poly(amino acid)s Nanocomposites. ACS APPLIED BIO MATERIALS 2022; 5:661-674. [PMID: 35135191 DOI: 10.1021/acsabm.1c01106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Interventional embolization and minimally invasive thermal ablation are common clinical methods for treatment of unresectable solid tumors, but they both have many insurmountable disadvantages. Inspired by pH-responsive drug delivery systems, we report the tumor microenvironment-gelled nanocomposites with poly[(l-glutamic acid-ran-l-tyrosine)-b-l-threonine-b-l-cysteine]s (PGTTCs) coating nanoparticles (NPs, Au or Fe3O4) for noninterventional targeted embolization combined with noninvasive thermal ablation therapy of solid tumors by intravenous injection without catheter use. The results of the animal trial in vivo with tumor-bearing mice and rabbits showed superior targeted embolization and therapy and fluorescence/single-photon emission computed tomography/magnetic resonance multimodal imaging effects. Tumors treated with NPs@PGTTCs were shrunken and necrotized within 30 days, the long-term survival rate was more than 80%, and the same effects can be achieved within 15 days when combined with thermal ablation. The method is so simple and efficient for many hard-to-treat tumors within an acidic microenvironment, which is not only a great improvement and innovation in tumor theranostics but also an important development in nanomedicine.
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Affiliation(s)
- Dedai Lu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Lili Yu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Zhengpeng Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Mingshu Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Ziqiang Lei
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Hongyun Guo
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou 730050, China
| | - Xingdong Wang
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou 730050, China
| | - Yongdong Zhang
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou 730050, China
| | - Tingting Xu
- Southeast University Zhongda Hospital, Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, School of Medicine, Southeast University, Nanjing 210009, China
| | - Haijun Wang
- Gansu Provincial Hospital, Lanzhou 730000, P. R. China
| | - Xing Zhou
- Gansu Provincial Hospital, Lanzhou 730000, P. R. China
| | - Shenghong Ju
- Southeast University Zhongda Hospital, Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, School of Medicine, Southeast University, Nanjing 210009, China
| | - Gaojun Teng
- Southeast University Zhongda Hospital, Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, School of Medicine, Southeast University, Nanjing 210009, China
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11
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Lakatos C, Kordován MÁ, Czifrák K, Nagy L, Vadkerti B, Daróczi L, Zsuga M, Kéki S. Synthesis of Sucrose-HDI Cooligomers: New Polyols for Novel Polyurethane Networks. Int J Mol Sci 2022; 23:ijms23031444. [PMID: 35163372 PMCID: PMC8836168 DOI: 10.3390/ijms23031444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/24/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
Sucrose-1,6-hexamethylene diisocyanate (HDI) cooligomers were synthesized and used as new polyols for poly(ε-caprolactone) (PCL)-based polyurethanes. The polyaddition reaction of sucrose and HDI was monitored by MALDI-TOF MS. It was found that by selecting appropriate reaction conditions, mostly linear oligomer chains containing 16 sucrose units could be obtained. For the synthesis of polyurethane networks, prepolymers were prepared by the reaction of poly(ε-caprolactone) (PCL, 10 kg/mol) with HDI or 4,4′-methylene diphenyl diisocyanate (MDI) and were reacted with sucrose-HDI cooligomers. The so-obtained sucrose-containing polyurethanes were characterized by means of attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FT IR), swelling, mechanical (uniaxial tensile tests) and differential scanning calorimetry (DSC).
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Affiliation(s)
- Csilla Lakatos
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
| | - Marcell Árpád Kordován
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
- Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Katalin Czifrák
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
| | - Lajos Nagy
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
| | - Bence Vadkerti
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
- Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Lajos Daróczi
- Department of Solid State Physics, Faculty of Science and Technology, University of Debrecen, Bem tér 18/b, H-4026 Debrecen, Hungary;
| | - Miklós Zsuga
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
| | - Sándor Kéki
- Department of Applied Chemistry, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (C.L.); (M.Á.K.); (K.C.); (L.N.); (B.V.); (M.Z.)
- Correspondence: ; Tel.: +36-52-512-900 (ext. 22455)
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12
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Lu D, Chen M, Yu L, Chen Z, Guo H, Zhang Y, Han Z, Xu T, Wang H, Zhou X, Zhou Z, Teng G. Smart-Polypeptide-Coated Mesoporous Fe 3O 4 Nanoparticles: Non-Interventional Target-Embolization/Thermal Ablation and Multimodal Imaging Combination Theranostics for Solid Tumors. NANO LETTERS 2021; 21:10267-10278. [PMID: 34878286 DOI: 10.1021/acs.nanolett.1c03340] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Tumor theranostics hold great potential for personalized medicine in the future, and transcatheter arterial embolization (TAE) is an important clinical treatment for unresectable or hypervascular tumors. In order to break the limitation, simplify the procedure of TAE, and achieve ideal combinatorial theranostic capability, here, a kind of triblock-polypeptide-coated perfluoropentane-loaded mesoporous Fe3O4 nanocomposites (PFP-m-Fe3O4@PGTTCs) were prepared for non-interventional target-embolization, magnetic hyperthermia, and multimodal imaging combination theranostics of solid tumors. The results of systematic animal experiments by H22-tumor-bearing mice and VX2-tumor-bearing rabbits in vivo indicated that PFP-m-Fe3O4@PGTTC-6.3 has specific tumor accumulation and embolization effects. The tumors' growth has been inhibited and the tumors disappeared 4 weeks and ≤15 days post-injection with embolization and magnetic hyperthermia combination therapy, respectively. The results also showed an excellent effect of magnetic resonance/ultrasound/SPECT multimodal imaging. This pH-responsive non-interventional embolization combinatorial theranostics system provides a novel embolization and multifunctional theranostic candidate for solid tumors.
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Affiliation(s)
- Dedai Lu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Mingshu Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Lili Yu
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Zhengpeng Chen
- Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, Key Laboratory of Eco-environmental Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, China
| | - Hongyun Guo
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou, 730050, China
| | - Yongdong Zhang
- Institute of Gansu Medical Science Research, Gansu Provincial Cancer Hospital, Lanzhou, 730050, China
| | - Zhiming Han
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Tingting Xu
- Zhongda Hospital Southeast University, Jiangsu Key Laboratory of Molecular Imaging and Function Imaging, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Haijun Wang
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Xing Zhou
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Zubang Zhou
- Gansu Provincial Hospital, Lanzhou, 730000, China
| | - Gaojun Teng
- Zhongda Hospital Southeast University, Jiangsu Key Laboratory of Molecular Imaging and Function Imaging, School of Medicine, Southeast University, Nanjing, 210009, China
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13
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Kim S, Nowicki KW, Gross BA, Wagner WR. Injectable hydrogels for vascular embolization and cell delivery: The potential for advances in cerebral aneurysm treatment. Biomaterials 2021; 277:121109. [PMID: 34530233 DOI: 10.1016/j.biomaterials.2021.121109] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 08/23/2021] [Accepted: 08/27/2021] [Indexed: 12/11/2022]
Abstract
Cerebral aneurysms are vascular lesions caused by the biomechanical failure of the vessel wall due to hemodynamic stress and inflammation. Aneurysmal rupture results in subarachnoid hemorrhage often leading to death or disability. Current treatment options include open surgery and minimally invasive endovascular options aimed at secluding the aneurysm from the circulation. Cerebral aneurysm embolization with appropriate materials is a therapeutic approach to prevent rupture and the resultant clinical sequelae. Metallic platinum coils are a typical, practical option to embolize cerebral aneurysms. However, the development of an alternative treatment modality is of interest because of poor occlusion permanence, coil migration, and coil compaction. Moreover, minimizing the implanted foreign materials during therapy is of importance not just to patients, but also to clinicians in the event an open surgical approach has to be pursued in the future. Polymeric injectable hydrogels have been investigated for transcatheter embolization and cell therapy with the potential for permanent aneurysm repair. This review focuses on how the combination of injectable embolic biomaterials and cell therapy may achieve minimally invasive remodeling of a degenerated cerebral artery with promise for superior outcomes in treatment of this devastating disease.
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Affiliation(s)
- Seungil Kim
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA
| | - Kamil W Nowicki
- Department of Neurosurgery, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - Bradley A Gross
- Department of Neurosurgery, School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - William R Wagner
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA; Department of Surgery, University of Pittsburgh, Pittsburgh, PA, USA; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA; Department of Chemical and Petroleum Engineering, University of Pittsburgh, Pittsburgh, PA, USA.
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14
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Shi J, Yu L, Ding J. PEG-based thermosensitive and biodegradable hydrogels. Acta Biomater 2021; 128:42-59. [PMID: 33857694 DOI: 10.1016/j.actbio.2021.04.009] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 03/09/2021] [Accepted: 04/01/2021] [Indexed: 02/07/2023]
Abstract
Injectable thermosensitive hydrogels are free-flowing polymer solutions at low or room temperature, making them easy to encapsulate the therapeutic payload or cells via simply mixing. Upon injection into the body, in situ forming hydrogels triggered by body temperature can act as drug-releasing reservoirs or cell-growing scaffolds. Finally, the hydrogels are eliminated from the administration sites after they accomplish their missions as depots or scaffolds. This review outlines the recent progress of poly(ethylene glycol) (PEG)-based biodegradable thermosensitive hydrogels, especially those composed of PEG-polyester copolymers, PEG-polypeptide copolymers and poly(organophosphazene)s. The material design, performance regulation, thermogelation and degradation mechanisms, and corresponding applications in the biomedical field are summarized and discussed. A perspective on the future thermosensitive hydrogels is also highlighted. STATEMENT OF SIGNIFICANCE: Thermosensitive hydrogels undergoing reversible sol-to-gel phase transitions in response to temperature variations are a class of promising biomaterials that can serve as minimally invasive injectable systems for various biomedical applications. Hydrophilic PEG is a main component in the design and fabrication of thermoresponsive hydrogels due to its excellent biocompatibility. By incorporating hydrophobic segments, such as polyesters and polypeptides, into PEG-based systems, biodegradable and thermosensitive hydrogels with adjustable properties in vitro and in vivo have been developed and have recently become a research hotspot of biomaterials. The summary and discussion on molecular design, performance regulation, thermogelation and degradation mechanisms, and biomedical applications of PEG-based thermosensitive hydrogels may offer a demonstration of blueprint for designing new thermogelling systems and expanding their application scope.
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15
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Liu M, Wu C, Ke L, Li Z, Wu YL. Emerging Biomaterials-Based Strategies for Inhibiting Vasculature Function in Cancer Therapy. SMALL METHODS 2021; 5:e2100347. [PMID: 34927997 DOI: 10.1002/smtd.202100347] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/20/2021] [Indexed: 06/14/2023]
Abstract
The constant feeding of oxygen and nutrients through the blood vasculature has a vital role in maintaining tumor growth. Interestingly, recent endeavors have shown that nanotherapeutics with the strategy to block tumor blood vessels feeding nutrients and oxygen for starvation therapy can be helpful in cancer treatment. However, this field has not been detailed. Hence, this review will present an exhaustive summary of the existing biomaterial based strategies to disrupt tumor vascular function for effective cancer treatment, including hydrogel or nanogel-mediated local arterial embolism, thrombosis activator loaded nano-material-mediated vascular occlusion and anti-vascular drugs that block tumor vascular function, which may be beneficial to the design of anti-cancer nanomedicine by targeting the tumor vascular system.
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Affiliation(s)
- Minting Liu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Caisheng Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Lingjie Ke
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Zhiguo Li
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
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16
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Wang H, Jin Y, Tan Y, Zhu H, Huo W, Niu P, Li Z, Zhang J, Liang XJ, Yang X. Photo-responsive hydrogel facilitates nutrition deprivation by an ambidextrous approach for preventing cancer recurrence and metastasis. Biomaterials 2021; 275:120992. [PMID: 34218050 DOI: 10.1016/j.biomaterials.2021.120992] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 06/09/2021] [Accepted: 06/23/2021] [Indexed: 01/23/2023]
Abstract
Postoperative recurrence at the primary site and distant metastasis remains the challenge in treating triple-negative breast cancer due to its unpredictable invasion into adjacent tissues. Although systemic chemotherapy has been extensively adopted to attenuate the recurrence and metastasis, the abundant nutrition supply by blood vessels would promote the rapid proliferation of tumor cells and angiogenesis. Herein, we reported a nutrition deprivation strategy by ambidextrously blocking the residual blood vessels and inhibiting angiogenesis to realize efficient treatment of triple-negative breast cancer. To this end, an injectable hydrogel with photo-responsive property was prepared by using polydopamine crosslinked collagen/silk fibroin composite to deliver thrombin for blocking blood vessels and angiogenesis. In the presence of NIR light, the locked thrombin was released into the blood vessels in the adjacent tissues to promote blood coagulation. In addition, the photothermal effect would reduce the secreting of VEGF for preventing angiogenesis in the adjacent tissues. The in vitro and in vivo results demonstrated that the permanent interruption of nutrient supply by blocking the blood vessels adjacent to the resected tumor and preventing angiogenesis is a promising strategy to prevent the recurrence and metastasis of TNBC.
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Affiliation(s)
- Hao Wang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry & Environmental Science, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, PR China
| | - Yi Jin
- College of Basic Medical Science, Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases of Hebei Province, Hebei University, Baoding, 071002, PR China
| | - Yanli Tan
- College of Basic Medical Science, Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases of Hebei Province, Hebei University, Baoding, 071002, PR China
| | - Han Zhu
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry & Environmental Science, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, PR China
| | - Wendi Huo
- College of Basic Medical Science, Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases of Hebei Province, Hebei University, Baoding, 071002, PR China
| | - Pei Niu
- College of Basic Medical Science, Key Laboratory of Pathogenesis Mechanism and Control of Inflammatory-autoimmune Diseases of Hebei Province, Hebei University, Baoding, 071002, PR China
| | - Zhenhua Li
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry & Environmental Science, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, PR China
| | - Jinchao Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry & Environmental Science, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, PR China.
| | - Xing-Jie Liang
- Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience and CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology, Beijing, 100190, PR China
| | - Xinjian Yang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, College of Chemistry & Environmental Science, Chemical Biology Key Laboratory of Hebei Province, Institute of Life Science and Green Development, Hebei University, Baoding, 071002, PR China.
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17
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Lim J, Choi G, Joo KI, Cha HJ, Kim J. Embolization of Vascular Malformations via In Situ Photocrosslinking of Mechanically Reinforced Alginate Microfibers using an Optical-Fiber-Integrated Microfluidic Device. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006759. [PMID: 33543521 DOI: 10.1002/adma.202006759] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/12/2020] [Indexed: 06/12/2023]
Abstract
Embolization, which is a minimally invasive endovascular treatment, is a safe and effective procedure for treating vascular malformations (e.g., aneurysms). Hydrogel microfibers obtained via spatiotemporally controllable in situ photocrosslinking exhibit great potential for embolizing aneurysms. However, this process is challenging because of the absence of biocompatible and morphologically stable hydrogels and the difficulty in continuously spinning the microfibers via in situ photocrosslinking in extreme endovascular environments such as those involving a tortuous geometry and high absorbance. A double-crosslinked alginate-based hydrogel with tantalum nanopowder (DAT) that exploits the synergistic effect of covalent crosslinking by visible-light irradiation and ionic crosslinking using Ca2+ , which is present in the blood, is developed in this study. Furthermore, an effective strategy to design and produce an optical-fiber-integrated microfluidic device (OFI-MD) that can continuously spin hydrogel microfibers via in situ photocrosslinking in extreme endovascular environments is proposed. As an embolic material, DAT exhibits promising characteristics such as radiopacity, nondissociation, nonswelling, and constant mechanical strength in blood, in addition to excellent cyto- and hemo-compatibilities. Using OFI-MD to spin DAT microfibers continuously can help fill aneurysms safely, uniformly, and completely within the endovascular simulator without generating microscopic fragments, which demonstrates its potential as an effective embolization strategy.
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Affiliation(s)
- Jongkyeong Lim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Geunho Choi
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Kye Il Joo
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Hyung Joon Cha
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Joonwon Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, 37673, Republic of Korea
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18
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Wendels S, Avérous L. Biobased polyurethanes for biomedical applications. Bioact Mater 2021; 6:1083-1106. [PMID: 33102948 PMCID: PMC7569269 DOI: 10.1016/j.bioactmat.2020.10.002] [Citation(s) in RCA: 125] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/01/2020] [Accepted: 10/01/2020] [Indexed: 12/15/2022] Open
Abstract
Polyurethanes (PUs) are a major family of polymers displaying a wide spectrum of physico-chemical, mechanical and structural properties for a large range of fields. They have shown suitable for biomedical applications and are used in this domain since decades. The current variety of biomass available has extended the diversity of starting materials for the elaboration of new biobased macromolecular architectures, allowing the development of biobased PUs with advanced properties such as controlled biotic and abiotic degradation. In this frame, new tunable biomedical devices have been successfully designed. PU structures with precise tissue biomimicking can be obtained and are adequate for adhesion, proliferation and differentiation of many cell's types. Moreover, new smart shape-memory PUs with adjustable shape-recovery properties have demonstrated promising results for biomedical applications such as wound healing. The fossil-based starting materials substitution for biomedical implants is slowly improving, nonetheless better renewable contents need to be achieved for most PUs to obtain biobased certifications. After a presentation of some PU generalities and an understanding of a biomaterial structure-biocompatibility relationship, recent developments of biobased PUs for non-implantable devices as well as short- and long-term implants are described in detail in this review and compared to more conventional PU structures.
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Affiliation(s)
- Sophie Wendels
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France
| | - Luc Avérous
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 Rue Becquerel, 67087, Strasbourg Cedex 2, France
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19
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Chen L, Zhou J, Deng Q, Feng J, Qiu Q, Huang W, Chen Y, Li Y. Ultrasound-visualized, site-specific vascular embolization using magnetic protein microcapsules. J Mater Chem B 2021; 9:2407-2416. [PMID: 33623935 DOI: 10.1039/d0tb02715d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Imaging-guided vascular embolization is frequently performed on patients with advanced hepatocellular carcinoma (HCC) to alleviate symptoms and extend their survival time. Current operation procedures are not only painful for patients, but are also inaccurate in tumor targeting after the release of embolic agents from the catheter, leading to injury to healthy tissues simultaneously. In this study, we developed an ultrasound-visualized, site-specific vascular embolization strategy with magnetic protein microcapsules (MPMs). MPMs were fabricated using a rapid emulsification method, giving it a smooth surface and a core-shell structure. Their diameters could be controlled within 10 μm, allowing them to pass through capillaries. The core-shell structure and loading of magnetic Fe3O4 endowed MPMs with good contrast under ultrasound imaging and magnetically inducible targeting properties, as well as aggregation response even under flowing conditions. In vitro cytotoxicity and hemolysis evaluation demonstrated good biocompatibility of the MPMs. Furthermore, mock embolization showed that cell death could be induced by aggregation of the MPMs. Such a combination of real-time monitoring using ultrasound and control on targeted vascular embolization might be a breakthrough in the treatment of advanced HCC.
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Affiliation(s)
- Lanxi Chen
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
| | - Jianhua Zhou
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
| | - Qiurong Deng
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
| | - Jialin Feng
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, UK
| | - Qiong Qiu
- Department of Cardiology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, 107 Yanjiang West Road, Guangzhou 510120, China
| | - Wenwei Huang
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
| | - Yin Chen
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
| | - Yan Li
- School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510006, China.
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20
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Lu D, Wang J, Li Y, Zhang Y, Yu L, Xu T, Guo H, Zhang Y, Wang X, Wang X, Teng G, Lei Z. Tumor Noninvasive and Target Embolization Therapy Platform by Intravenous Injection Based on Acidic Microenvironment-Responsive Hyperbranched Poly(amino acid)s. ACS CENTRAL SCIENCE 2020; 6:1977-1986. [PMID: 33274275 PMCID: PMC7706070 DOI: 10.1021/acscentsci.0c00506] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Indexed: 05/05/2023]
Abstract
Transcatheter arterial embolization (TAE) has been widely applied in treatments of unresectable or hypervascular tumors, but the procedure of TAE is complicated possibly brings inherent risks. Here, inspired by pH-responsive drug delivery systems, a new method of noninvasive and target embolization therapy by intravenous injection was developed. This method is based on a type of acidic microenvironment-responsive hyperbranched poly(amino acid) (HPTTG) to avoid using catheterization and real-time image guidance angiography, simplifying the procedure, elevating compliance and general applicability of embolization therapy. The pH value of the sol-to-gel phase transition with decreasing pH of HPTTG was controlled by adjusting the ratio of acidic amino acids in copolymers. The results of the tumor-bearing animal experiment indicate that the HPTTG have an excellent target and embolic ability; they accumulate the most at the tumor site in 8 h postinjection. Blood vessels of the tumors were occluded, and the tumors were inhibited and necrotized in about 20 days. Therefore, it is expected that HPTTG not only can be used as novel embolic materials for efficient noninvasive embolization therapy of many solid tumors but also can be used as a multifunctional platform for combined theranostics, for example, combination with controlled release, thermal ablation, multimodal imaging, synergistic therapy, etc.
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Affiliation(s)
- Dedai Lu
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Jiachen Wang
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yunfei Li
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Yongyong Zhang
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Lili Yu
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Tingting Xu
- Jiangsu
Key Laboratory of Molecular Imaging and Function Imaging, Department
of Radiology, Zhongda Hospital Southeast
University, School of Medicine, Southeast University, Nanjing 210009, China
| | - Hongyun Guo
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Yongdong Zhang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Xingdong Wang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Xiaoqi Wang
- Institute
of Gansu Medical Science Research, Gansu
Provincial Cancer Hospital, Lanzhou 730050, China
| | - Gaojun Teng
- Jiangsu
Key Laboratory of Molecular Imaging and Function Imaging, Department
of Radiology, Zhongda Hospital Southeast
University, School of Medicine, Southeast University, Nanjing 210009, China
| | - Ziqiang Lei
- Key
Laboratory of Eco-Functional Polymer Materials of the Ministry of
Education, Key Laboratory of Eco-Environmental Polymer Materials of
Gansu Province, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
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21
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Poupart O, Schmocker A, Conti R, Moser C, Nuss KM, Grützmacher H, Mosimann PJ, Pioletti DP. In vitro Implementation of Photopolymerizable Hydrogels as a Potential Treatment of Intracranial Aneurysms. Front Bioeng Biotechnol 2020; 8:261. [PMID: 32318555 PMCID: PMC7146053 DOI: 10.3389/fbioe.2020.00261] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/13/2020] [Indexed: 12/19/2022] Open
Abstract
Intracranial aneurysms are increasingly being treated with endovascular therapy, namely coil embolization. Despite being minimally invasive, partial occlusion and recurrence are more frequent compared to open surgical clipping. Therefore, an alternative treatment is needed, ideally combining minimal invasiveness and long-term efficiency. Herein, we propose such an alternative treatment based on an injectable, radiopaque and photopolymerizable polyethylene glycol dimethacrylate hydrogel. The rheological measurements demonstrated a viscosity of 4.86 ± 1.70 mPa.s, which was significantly lower than contrast agent currently used in endovascular treatment (p = 0.42), allowing the hydrogel to be injected through 430 μm inner diameter microcatheters. Photorheology revealed fast hydrogel solidification in 8 min due to the use of a new visible photoinitiator. The addition of an iodinated contrast agent in the precursor contributed to the visibility of the precursor injection under fluoroscopy. Using a customized light-conducting microcatheter and illumination module, the hydrogel was implanted in an in vitro silicone aneurysm model. Specifically, in situ fast and controllable injection and photopolymerization of the developed hydrogel is shown to be feasible in this work. Finally, the precursor and the polymerized hydrogel exhibit no toxicity for the endothelial cells. Photopolymerizable hydrogels are expected to be promising candidates for future intracranial aneurysm treatments.
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Affiliation(s)
- Oriane Poupart
- Laboratory of Biomechanical Orthopedics, EPFL, Lausanne, Switzerland
| | - Andreas Schmocker
- Laboratory of Applied Photonics Devices, EPFL, Lausanne, Switzerland
- Department of Chemistry and Applied Biosciences, ETH, Zurich, Switzerland
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Riccardo Conti
- Department of Chemistry and Applied Biosciences, ETH, Zurich, Switzerland
| | - Christophe Moser
- Laboratory of Applied Photonics Devices, EPFL, Lausanne, Switzerland
| | - Katja M. Nuss
- Musculoskeletal Research Unit, Department of Molecular Mechanisms of Disease, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | | | - Pascal J. Mosimann
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, Bern, Switzerland
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22
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Ding J, Feng X, Jiang Z, Xu W, Guo H, Zhuang X, Chen X. Polymer-Mediated Penetration-Independent Cancer Therapy. Biomacromolecules 2019; 20:4258-4271. [DOI: 10.1021/acs.biomac.9b01263] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xiangru Feng
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Zhongyu Jiang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Weiguo Xu
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Hui Guo
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xiuli Zhuang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, P. R. China
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23
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Piantanida E, Alonci G, Bertucci A, De Cola L. Design of Nanocomposite Injectable Hydrogels for Minimally Invasive Surgery. Acc Chem Res 2019; 52:2101-2112. [PMID: 31291090 DOI: 10.1021/acs.accounts.9b00114] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Biocompatible hydrogels are materials that hold great promise in medicine and biology since the porous structure, the ability to entrap a large amount of water, and the tunability of their mechanical and tissue adhesive properties make them suitable for several applications, including wound healing, drug and cell delivery, cancer treatment, bioelectronics, and tissue regeneration. Among the possible developed systems, injectable hydrogels, owing to their properties, are optimal candidates for in vivo minimally invasive procedures. To be injectable, a hydrogel must be liquid before and during the injection, but it must quickly jellify after injection to form a soft, self-standing, solid material. The possibility to work with a liquid precursor encoding the functions that will be available after gelation allows the development of biocompatible materials that can be employed in surgery and, in particular, in noninvasive procedures. The underlying idea is to reach the target tissue by using just a needle, or by exploiting the natural body orifices, reducing surgery procedure time, induced pain, and risk of infections. Hydrogels with different properties can be obtained by changing the type of cross-linking, the cross-linking density or the molecular weight of the polymer, or by introducing pending functional groups. The introduction of a nanofiller in the hydrogel network allows for expanding the suite of the structural and functional properties and for better mimicking native tissues. In this Account, we discuss how to provide a hydrogel network with designed properties by playing with both the polymeric chains and the fillers. We present selected examples from the literature that show how to introduce stiffness, stretchability, adhesiveness, self-healing, anisotropy, antimicrobial activity, biodegradability, and conductivity in injectable hydrogels. We further describe how the chemical composition, the mechanical properties, and the microarchitecture of the hydrogel influence cell adhesion, proliferation, and differentiation. Examples of injectable hydrogels for innovative minimally invasive procedures are then discussed in detail; in particular, we showcase the use of hydrogels for tumor resection and as vascular chemoembolization agents. We further discuss how one can improve the rheological properties of injectable hydrogels to exploit them in osteochondral tissue engineering. The effect of the introduction of a conductive filler is then presented in relation to the development of electroactive scaffolds for cardiac-tissue engineering and neural and nerve repair. We believe that the rational design of biocompatible, injectable hybrid hydrogels with tunable properties will likely play a crucial role in reducing the invasiveness and improving the outcome of several clinical and surgical setups.
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Affiliation(s)
- Etienne Piantanida
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - Giuseppe Alonci
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
| | - Alessandro Bertucci
- Department of Chemical Sciences and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, Rome 00133, Italy
| | - Luisa De Cola
- Institut de Science et d’Ingénierie Supramoléculaires, CNRS, UMR 7006, Université de Strasbourg, 8 rue Gaspard Monge, 67000 Strasbourg, France
- Institute of Nanotecnology and Karlsruhe Nano and Micro Facility, Karlsruhe Institute of Technology (KIT), Herman-von-Helmholtz Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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24
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Hu J, Albadawi H, Oklu R, Chong BW, Deipolyi AR, Sheth RA, Khademhosseini A. Advances in Biomaterials and Technologies for Vascular Embolization. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1901071. [PMID: 31168915 PMCID: PMC7014563 DOI: 10.1002/adma.201901071] [Citation(s) in RCA: 112] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/24/2019] [Indexed: 05/03/2023]
Abstract
Minimally invasive transcatheter embolization is a common nonsurgical procedure in interventional radiology used for the deliberate occlusion of blood vessels for the treatment of diseased or injured vasculature. A wide variety of embolic agents including metallic coils, calibrated microspheres, and liquids are available for clinical practice. Additionally, advances in biomaterials, such as shape-memory foams, biodegradable polymers, and in situ gelling solutions have led to the development of novel preclinical embolic agents. The aim here is to provide a comprehensive overview of current and emerging technologies in endovascular embolization with respect to devices, materials, mechanisms, and design guidelines. Limitations and challenges in embolic materials are also discussed to promote advancement in the field.
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Affiliation(s)
- Jingjie Hu
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Hassan Albadawi
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Rahmi Oklu
- Division of Vascular & Interventional Radiology, Minimally Invasive Therapeutics Laboratory, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Brian W Chong
- Departments of Radiology and Neurological Surgery, Mayo Clinic, 13400 East Shea Blvd., Scottsdale, Arizona 85259, USA
| | - Amy R. Deipolyi
- Department of Interventional Radiology, Memorial Sloan Kettering Cancer Center, Weill Cornell Medical Center, 1275 York Avenue, New York, New York 10065, USA
| | - Rahul A. Sheth
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, USA
| | - Ali Khademhosseini
- Department of Bioengineering, Department of Radiological Sciences, Department of Chemical and Biomolecular Engineering, Center for Minimally Invasive Therapeutics, California Nanosystems Institute, University of California, 410 Westwood Plaza, Los Angeles, California 90095, USA
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25
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Lu D, Li Y, Wang X, Li T, Zhang Y, Guo H, Sun S, Wang X, Zhang Y, Lei Z. All-in-one hyperbranched polypeptides for surgical adhesives and interventional embolization of tumors. J Mater Chem B 2018; 6:7511-7520. [DOI: 10.1039/c8tb01015c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of hyperbranched, thermo-responsive and mussel-inspired polypeptides were synthesized and used for surgical adhesion, hemostasis and interventional embolization.
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Affiliation(s)
- Dedai Lu
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Yunfei Li
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Xiangya Wang
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Ting’e Li
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Yongyong Zhang
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
| | - Hongyun Guo
- Institute of Gansu Medical Science Research
- Gansu Provincial Cancer Hospital
- Lanzhou
- P. R. China
| | - Shaobo Sun
- Gansu University of Chinese Medicine
- Lanzhou
- P. R. China
| | - Xiaoqi Wang
- Institute of Gansu Medical Science Research
- Gansu Provincial Cancer Hospital
- Lanzhou
- P. R. China
| | - Yongdong Zhang
- Institute of Gansu Medical Science Research
- Gansu Provincial Cancer Hospital
- Lanzhou
- P. R. China
| | - Ziqiang Lei
- Key Laboratory of Eco-environment-related Polymer Materials Ministry of Education
- Key Laboratory of Polymer Materials of Gansu Province
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
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26
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Thambi T, Li Y, Lee DS. Injectable hydrogels for sustained release of therapeutic agents. J Control Release 2017; 267:57-66. [DOI: 10.1016/j.jconrel.2017.08.006] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/31/2017] [Accepted: 08/03/2017] [Indexed: 12/17/2022]
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