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Ramos Ferrer P, Vardhan S, Sakiyama-Elbert S. Sustained neurotrophin-3 delivery from hyaluronic acid hydrogels for neural tissue regeneration. J Biomed Mater Res A 2024; 112:1188-1199. [PMID: 37675824 DOI: 10.1002/jbm.a.37596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 09/08/2023]
Abstract
The goal of this work was to design a polymer-based platform capable of localized, long-term delivery of biologically active neurotropic factors using an affinity-based approach. Here, we synthesized hyaluronic acid-methylfuran (HA-mF) hydrogels that provide sustained, affinity-based release of neurotrophin-3 (NT-3), a growth factor that promotes axon growth for 28 days. A Diels-Alder crosslinking reaction between HA-mF and polyethylene glycol (PEG)-dimaleimide occurs within 15 min under physiological conditions, resulting in hydrogels that can be polymerized in the presence of cells and growth factors. We also tuned the hydrogel's storage modulus to match that of native rat spinal cord tissue, providing a platform not only for localized drug delivery but also a suitable vehicle for cellular transplantation. The NT-3 released from the HAmF hydrogels remains bioactive for at least 14 days, promoting axonal growth from primary sensory neurons as well as stem cell-derived V2a interneurons and motoneurons in vitro. The hydrogels also supported cell growth allowing for 3-dimensional axonal extensions within the scaffold matrix. Here we confirm the protective role of HA-mF on matrix-bound NT-3 activity and show that these hydrogels are an excellent platform for growth factor delivery for neural applications.
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Affiliation(s)
- Pablo Ramos Ferrer
- Department of Chemical Engineering, University of Washington, Seattle, Washington, USA
| | - Sangamithra Vardhan
- Department of Bioengineering, University of Washington, Seattle, Washington, USA
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Liu Y, Zhang X, Xiao C, Liu B. Engineered hydrogels for peripheral nerve repair. Mater Today Bio 2023; 20:100668. [PMID: 37273791 PMCID: PMC10232914 DOI: 10.1016/j.mtbio.2023.100668] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 05/06/2023] [Accepted: 05/16/2023] [Indexed: 06/06/2023] Open
Abstract
Peripheral nerve injury (PNI) is a complex disease that often appears in young adults. It is characterized by a high incidence, limited treatment options, and poor clinical outcomes. This disease not only causes dysfunction and psychological disorders in patients but also brings a heavy burden to the society. Currently, autologous nerve grafting is the gold standard in clinical treatment, but complications, such as the limited source of donor tissue and scar tissue formation, often further limit the therapeutic effect. Recently, a growing number of studies have used tissue-engineered materials to create a natural microenvironment similar to the nervous system and thus promote the regeneration of neural tissue and the recovery of impaired neural function with promising results. Hydrogels are often used as materials for the culture and differentiation of neurogenic cells due to their unique physical and chemical properties. Hydrogels can provide three-dimensional hydration networks that can be integrated into a variety of sizes and shapes to suit the morphology of neural tissues. In this review, we discuss the recent advances of engineered hydrogels for peripheral nerve repair and analyze the role of several different therapeutic strategies of hydrogels in PNI through the application characteristics of hydrogels in nerve tissue engineering (NTE). Furthermore, the prospects and challenges of the application of hydrogels in the treatment of PNI are also discussed.
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Affiliation(s)
- Yao Liu
- Hand and Foot Surgery Department, First Hospital of Jilin University, Xinmin Street, Changchun, 130061, PR China
| | - Xiaonong Zhang
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Jilin Biomedical Polymers Engineering Laboratory, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Bin Liu
- Hand and Foot Surgery Department, First Hospital of Jilin University, Xinmin Street, Changchun, 130061, PR China
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Cai M, Chen L, Wang T, Liang Y, Zhao J, Zhang X, Li Z, Wu H. Hydrogel scaffolds in the treatment of spinal cord injury: a review. Front Neurosci 2023; 17:1211066. [PMID: 37325033 PMCID: PMC10266534 DOI: 10.3389/fnins.2023.1211066] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 05/12/2023] [Indexed: 06/17/2023] Open
Abstract
Spinal cord injury (SCI) is a disease of the central nervous system often caused by accidents, and its prognosis is unsatisfactory, with long-term adverse effects on patients' lives. The key to its treatment lies in the improvement of the microenvironment at the injury and the reconstruction of axons, and tissue repair is a promising therapeutic strategy. Hydrogel is a three-dimensional mesh structure with high water content, which has the advantages of biocompatibility, degradability, and adjustability, and can be used to fill pathological defects by injectable flowing hydrophilic material in situ to accurately adapt to the size and shape of the injury. Hydrogels mimic the natural extracellular matrix for cell colonization, guide axon extension, and act as a biological scaffold, which can be used as an excellent carrier to participate in the treatment of SCI. The addition of different materials to make composite hydrogel scaffolds can further enhance their performance in all aspects. In this paper, we introduce several typical composite hydrogels and review the research progress of hydrogel for SCI to provide a reference for the clinical application of hydrogel therapy for SCI.
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Affiliation(s)
- Manqi Cai
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, China
| | - Liji Chen
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Tao Wang
- Department of Surgery, The Third Hospital of Guangdong Medical University (Longjiang Hospital of Shunde District), Foshan, China
| | - Yinru Liang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Jie Zhao
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Xiaomin Zhang
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
| | - Ziyi Li
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
- The Second Clinical Medical College, Guangdong Medical University, Dongguan, China
| | - Hongfu Wu
- Dongguan Key Laboratory of Stem Cell and Regenerative Tissue Engineering, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, China
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Sha Q, Wang Y, Zhu Z, Wang H, Qiu H, Niu W, Li X, Qian J. A hyaluronic acid/silk fibroin/poly-dopamine-coated biomimetic hydrogel scaffold with incorporated neurotrophin-3 for spinal cord injury repair. Acta Biomater 2023:S1742-7061(23)00309-4. [PMID: 37257575 DOI: 10.1016/j.actbio.2023.05.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/08/2023] [Accepted: 05/25/2023] [Indexed: 06/02/2023]
Abstract
Bio-factor stimulation is essential for axonal regeneration in the central nervous system. Thus, persistent and efficient factor delivery in the local microenvironment is an ideal strategy for spinal cord injury repair. We developed a biomimetic hydrogel scaffold to load biofactors in situ and release them in a controlled way as a promising therapeutic modality. Hyaluronic acid and silk fibroin were cross-linked as the basement of the scaffolds, and poly-dopamine coating was used to further increase the loading of factors and endow the hydrogel scaffolds with ideal physical and chemical properties and proper biocompatibility. Notably, neurotrophin-3 release from the hydrogel scaffolds was prolonged to 28 days. A spinal cord injury model was constructed for hydrogel scaffold transplantation. After eight weeks, significant NF200-positive nerve fibers were observed extending across the glial scar to the center of the injured area. Due to the release of neurotrophin-3, spinal cord regeneration was enhanced, and the cavity area of the injury graft site and inflammation associated with CD68 positive cells were reduced, which led to a significant improvement in hind limb motor function. The results show that the hyaluronic acid/silk fibroin/poly-dopamine-coated biomimetic hydrogel scaffold achieved locally slow release of neurotrophin-3, thus facilitating the regeneration of injured spinal cord. STATEMENT OF SIGNIFICANCE: Hydrogels have received great attention in spinal cord regeneration. Current research has focused on more efficient and controlled release of bio-factors. Here, we adopted a mussel-inspired strategy to functionalize the hyaluronic acid/silk fibroin hydrogel scaffold to increase the load of neurotrophin-3 and extend the release time. The hydrogel scaffolds have ideal physiochemical properties, proper release rate, and biocompatibility. Owing to the continuous neurotrophin-3 release from implanted scaffolds, cavity formation is reduced, inflammation alleviated, and spinal cord regeneration enhanced, indicating great potential for bio-factor delivery in soft tissue regeneration applications.
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Affiliation(s)
- Qi Sha
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032, China
| | - Yankai Wang
- Stomatologic Hospital and College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, Anhui 230032, China
| | - Zhi Zhu
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032, China
| | - Hu Wang
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032, China
| | - Hua Qiu
- Stomatologic Hospital and College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, Anhui 230032, China
| | - Weirui Niu
- Stomatologic Hospital and College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, Anhui 230032, China
| | - Xiangyang Li
- Stomatologic Hospital and College, Anhui Medical University, Key Laboratory of Oral Diseases Research of Anhui Province, Hefei, Anhui 230032, China.
| | - Jun Qian
- Department of Orthopedics, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230032, China.
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Cheung TH, Xue C, Kurtz DA, Shoichet MS. Protein Release by Controlled Desorption from Transiently Cationic Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2023; 15:50560-50573. [PMID: 36703567 DOI: 10.1021/acsami.2c19877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Therapeutic release from hydrogels is traditionally controlled by encapsulation within nanoparticles; however, this strategy is limited for the release of proteins due to poor efficiency and denaturation. To overcome this problem, we designed an encapsulation-free release platform where negatively charged proteins are adsorbed to the exterior of transiently cationic nanoparticles, thus allowing the nanoparticles to be formulated separately from the proteins. Release is then governed by the change in nanoparticle surface charge from positive to neutral. To achieve this, we synthesized eight zwitterionic poly(lactide-block-carboxybetaine) copolymer derivatives and formulated them into nanoparticles with differing surface chemistry. The nanoparticles were colloidally stable and lost positive charge at rates dependent on the hydrolytic stability of their surface ester groups. The nanoparticles (NPs) were dispersed in a physically cross-linked hyaluronan-based hydrogel with one of three negatively charged proteins (transferrin, panitumumab, or granulocyte-macrophage colony-stimulating factor) to assess their ability to control release. For all three proteins, dispersing NPs within the gels resulted in significant attenuation of release, with the extent modulated by the hydrolytic stability of the surface groups. Release was rapid from fast-hydrolyzing ester groups, reduced with slow-hydrolyzing bulky ester groups, and very slow with nonhydrolyzing amide groups. When positively charged lysozyme was loaded into the nanocomposite gel, there was no significant attenuation of release compared to gel alone. These data demonstrate that electrostatic interactions between the protein and NP are the primary driver of protein release from the hydrogel. All released proteins retained bioactivity as determined with in vitro cell assays. This release strategy shows tremendous versatility and provides a promising new platform for controlled release of anionic protein therapeutics.
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Affiliation(s)
- Timothy H Cheung
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, OntarioM5S 3E1, Canada
| | - Chang Xue
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, OntarioM5S 3E1, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College Street, Toronto, OntarioM5S 3G9, Canada
| | - Daniel A Kurtz
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, OntarioM5S 3E1, Canada
| | - Molly S Shoichet
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, OntarioM5S 3H6, Canada
- Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College Street, Toronto, OntarioM5S 3E1, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College Street, Toronto, OntarioM5S 3G9, Canada
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, OntarioM5S 3E5, Canada
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Nelson DW, Gilbert RJ. Extracellular Matrix-Mimetic Hydrogels for Treating Neural Tissue Injury: A Focus on Fibrin, Hyaluronic Acid, and Elastin-Like Polypeptide Hydrogels. Adv Healthc Mater 2021; 10:e2101329. [PMID: 34494398 PMCID: PMC8599642 DOI: 10.1002/adhm.202101329] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/23/2021] [Indexed: 12/19/2022]
Abstract
Neurological and functional recovery is limited following central nervous system injury and severe injury to the peripheral nervous system. Extracellular matrix (ECM)-mimetic hydrogels are of particular interest as regenerative scaffolds for the injured nervous system as they provide 3D bioactive interfaces that modulate cellular response to the injury environment and provide naturally degradable scaffolding for effective tissue remodeling. In this review, three unique ECM-mimetic hydrogels used in models of neural injury are reviewed: fibrin hydrogels, which rely on a naturally occurring enzymatic gelation, hyaluronic acid hydrogels, which require chemical modification prior to chemical crosslinking, and elastin-like polypeptide (ELP) hydrogels, which exhibit a temperature-sensitive gelation. The hydrogels are reviewed by summarizing their unique biological properties, their use as drug depots, and their combination with other biomaterials, such as electrospun fibers and nanoparticles. This review is the first to focus on these three ECM-mimetic hydrogels for their use in neural tissue engineering. Additionally, this is the first review to summarize the use of ELP hydrogels for nervous system applications. ECM-mimetic hydrogels have shown great promise in preclinical models of neural injury and future advancements in their design and use can likely lead to viable treatments for patients with neural injury.
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Affiliation(s)
- Derek W Nelson
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
| | - Ryan J Gilbert
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, 110 8th St, Troy, NY, 12180, USA
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Müller ML, Peglau L, Moon LDF, Groß S, Schulze J, Ruhnau J, Vogelgesang A. Neurotrophin-3 attenuates human peripheral blood T cell and monocyte activation status and cytokine production post stroke. Exp Neurol 2021; 347:113901. [PMID: 34688600 DOI: 10.1016/j.expneurol.2021.113901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 09/17/2021] [Accepted: 10/18/2021] [Indexed: 11/24/2022]
Abstract
BACKGROUND AND PURPOSE Stroke therapy still lacks successful measures to improve post stroke recovery. Neurotrophin-3 (NT-3) is one promising candidate which has proven therapeutic benefit in motor recovery in acute experimental stroke. Post stroke, the immune system has opposing pathophysiological roles: pro-inflammatory cascades and immune cell infiltration into the brain exacerbate cell death while the peripheral immune response has only limited capabilities to fight infections during the acute and subacute phase. With time, anti-inflammatory mechanisms are supposed to support recovery of the ischemic damage within the brain parenchyma. However, interestingly, NT-3 can improve recovery in chronic neurological injury when combined with the pro-inflammatory stimulus lipopolysaccharide (LPS). AIM We elucidated the impact of NT-3 on human monocyte and T cell activation as well as cytokine production ex vivo after stroke. In addition, we investigated the age-dependent availability of the high affinity NT-3 receptor TrkC upon LPS stimulation. METHODS Peripheral blood mononuclear cells (PBMCs) were isolated from acute stroke patients and controls and incubated with different dosages of NT-3 (10 and 100 ng/mL) and with or without LPS or anti-CD3/CD28 for 48 h. Total TrkC expression and cell activation (CD25, CD69 and HLA-DR) were assessed by FACS staining. IFN-γ, TNF-α, IL-2, IL-4, IL-5, IL-6, IL-9, IL-10, IL-13, IL-17A, IL-17F, IL-21 and IL-22 were quantified by cytometric bead array. RESULTS Most monocytes and only a small proportion of T cells expressed TrkC in blood from humans without stroke. Activation of cells from young humans (without strokes) using anti-CD3/CD28 or LPS partially reduced the proportion of monocytes expressing TrkC whilst they increased the proportion of T cells expressing TrkC. In contrast, activation of cells from elderly humans (without strokes) did not affect the proportion of monocytes expressing TrkC and only anti-CD3/CD28 led to an increase in the proportion of CD4+ T cells expressing TrkC. In blood from stroke patients or controls, NT-3 treatment reduced the percentage of monocytes and CD4+ and CD8+ T cells that were activated and reduced all cytokines investigated besides IL-21. CONCLUSIONS NT-3 attenuated immune responses in cells from stroke patients and controls. The mechanism whereby human immune cells respond to NT-3 may be via TrkC receptors whose levels are regulated by stimulation. Further work is required to determine whether the induction of sensorimotor recovery in rodents by NT-3 after CNS injury is caused by this attenuation of the immune response.
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Affiliation(s)
| | - Lars Peglau
- Department of Neurology, University Medicine, Greifswald, Germany
| | - Lawrence D F Moon
- Neurorestoration Group, Wolfson Centre for Age-Related Diseases, King's College London, United Kingdom
| | - Stefan Groß
- Department of Internal Medicine B, University Medicine, Greifswald, Germany
| | - Juliane Schulze
- Department of Neurology, University Medicine, Greifswald, Germany
| | - Johanna Ruhnau
- Department of Neurology, University Medicine, Greifswald, Germany
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Wu Y, Vora LK, Wang Y, Adrianto MF, Tekko IA, Waite D, Donnelly RF, Thakur RRS. Long-acting nanoparticle-loaded bilayer microneedles for protein delivery to the posterior segment of the eye. Eur J Pharm Biopharm 2021; 165:306-318. [PMID: 34048879 DOI: 10.1016/j.ejpb.2021.05.022] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 05/04/2021] [Accepted: 05/13/2021] [Indexed: 01/24/2023]
Abstract
Treatment of neovascular ocular diseases involves intravitreal injections of therapeutic proteins using conventional hypodermic needles every 4-6 weeks. Due to the chronic nature of these diseases, these injections will be administrated to patients for the rest of their lives and their frequent nature can potentially pose a risk of sight-threatening complications and poor patient compliance. Therefore, we propose to develop nanoparticle (NP)-loaded bilayer dissolving microneedle (MN) arrays, to sustain delivery of protein drugs in a minimally invasive manner. In this research, a model protein, ovalbumin (OVA)-encapsulated PLGA NPs were prepared and optimised using a water-in-oil-in-water (W/O/W) double emulsion method. The impact of stabilisers and primary sonication time on the stability of encapsulated OVA was evaluated using an enzyme-linked immunosorbent assay (ELISA). Results showed that the lower primary sonication time was capable of sustaining release (77 days at 28.5% OVA loading) and improving the OVA bioactivity. The optimised NPs were then incorporated into a polymeric matrix to fabricate bilayer MNs and specifically concentrated into MN tips by high-speed centrifugation. Optimised bilayer MNs exhibited good mechanical and insertion properties and rapid dissolution kinetics (less than 3 min) in excised porcine sclera. Importantly, ex vivo transscleral distribution studies conducted using a multiphoton microscope confirmed the important function of MN arrays in the localisation of proteins and NPs in the scleral tissue. Furthermore, the polymers selected to prepare bilayer MNs and OVA NPs were determined to be biocompatible with retinal cells (ARPE-19). This delivery approach could potentially sustain the release of encapsulated proteins for more than two months and effectively bypass the scleral barrier, leading to a promising therapy for treating neovascular ocular diseases.
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Affiliation(s)
- Yu Wu
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Lalitkumar K Vora
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Yujing Wang
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Muhammad Faris Adrianto
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Airlangga University, Surabaya, East Java 60115, Indonesia
| | - Ismaiel A Tekko
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK; Faculty of Pharmacy, Aleppo University, Aleppo, Syria
| | - David Waite
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Ryan F Donnelly
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Raghu Raj Singh Thakur
- School of Pharmacy, Medical Biology Centre, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Chiang MY, Cheng HW, Lo YC, Wang WC, Chang SJ, Cheng CH, Lin YC, Lu HE, Sue MW, Tsou NT, Lo YC, Li SJ, Kuo CH, Chen YY, Huang WC, Chen SY. 4D spatiotemporal modulation of biomolecules distribution in anisotropic corrugated microwrinkles via electrically manipulated microcapsules within hierarchical hydrogel for spinal cord regeneration. Biomaterials 2021; 271:120762. [PMID: 33773400 DOI: 10.1016/j.biomaterials.2021.120762] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 02/28/2021] [Accepted: 03/12/2021] [Indexed: 01/12/2023]
Abstract
Although traditional 3D scaffolds or biomimetic hydrogels have been used for tissue engineering and regenerative medicine, soft tissue microenvironment usually has a highly anisotropic structure and a dynamically controllable deformation with various biomolecule distribution. In this study, we developed a hierarchical hybrid gelatin methacrylate-microcapsule hydrogel (HGMH) with Neurotrophin-3(NT-3)-loaded PLGA microcapsules to fabricate anisotropic structure with patterned NT-3 distribution (demonstrated as striped and triangular patterns) by dielectrophoresis (DEP). The HGMH provides a dynamic biomimetic sinuate-microwrinkles change with NT-3 spatial gradient and 2-stage time-dependent distribution, which was further simulated using a 3D finite element model. As demonstrated, in comparison with striped-patterned hydrogel, the triangular-patterned HGMH with highly anisotropic array of microcapsules exhibits remarkably spatial NT-3 gradient distributions that can not only guide neural stem cells (NSCs) migration but also facilitate spinal cord injury regeneration. This approach to construct hierarchical 4D hydrogel system via an electromicrofluidic platform demonstrates the potential for building various biomimetic soft scaffolds in vitro tailed to real soft tissues.
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Affiliation(s)
- Min-Yu Chiang
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Hung-Wei Cheng
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Yu-Chih Lo
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Wei-Chun Wang
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Shwu-Jen Chang
- Department of Biomedical Engineering, I-Shou University, No.8, Yida Rd., Jiaosu Village, Kaohsiung, 840, Taiwan, ROC
| | - Chu-Hsun Cheng
- Institute of Pharmacology, School of Medicine, National Yang Ming University, No. 155, Sec. 2, Linong Street, Taipei, 112, Taiwan, ROC; Institute of Pharmacology, School of Medicine, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, No. 201, Sec. 2, Shipai Rd., Taipei, 112, Taiwan, ROC
| | - Yu-Chang Lin
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Huai-En Lu
- Food Industry Research and Development Institute, No. 331 Shih-Pin Rd., Hsinchu, 300, Taiwan, ROC
| | - Ming-Wen Sue
- Food Industry Research and Development Institute, No. 331 Shih-Pin Rd., Hsinchu, 300, Taiwan, ROC
| | - Nien-Ti Tsou
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Yu-Chun Lo
- Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, No. 250 Wu-Xing Street, Taipei, 110, Taiwan, ROC
| | - Ssu-Ju Li
- Department of Biomedical Engineering, National Yang Ming University, No. 155, Section 2, Linong Street, Taipei, 112, Taiwan, ROC; Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC
| | - Chao-Hung Kuo
- Institute of Pharmacology, School of Medicine, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Biomedical Engineering, National Yang Ming University, No. 155, Section 2, Linong Street, Taipei, 112, Taiwan, ROC; Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Neurological Surgery, University of Washington, No. 1959 NE Pacific Street, Seattle, WA, 98195-6470, USA
| | - You-Yin Chen
- Program for Neural Regenerative Medicine, College of Medical Science and Technology, Taipei Medical University, No. 250 Wu-Xing Street, Taipei, 110, Taiwan, ROC; Department of Biomedical Engineering, National Yang Ming University, No. 155, Section 2, Linong Street, Taipei, 112, Taiwan, ROC; Department of Biomedical Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC.
| | - Wei-Chen Huang
- Department of Electrical and Computer Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC.
| | - San-Yuan Chen
- Department of Materials Science and Engineering, National Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, No. 1001 Ta-Hsueh Rd., Hsinchu, 300, Taiwan, ROC; Frontier Research Centre on Fundamental and Applied Sciences of Matters, National Tsing Hua University, No. 101-1, Sec. 2, Guangfu Rd., Hsinchu, 300, Taiwan, ROC; School of Dentistry, College of Dental Medicine, Kaohsiung Medical University, No.100, Shih-Chuan 1st Rd., Kaohsiung, 807, Taiwan, ROC; Graduate Institute of Biomedical Science, China Medical University, No. 100, Sec. 1, Jingmao Rd., Taichung, 406, Taiwan, ROC.
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10
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Zhao C, Xing Z, Zhang C, Fan Y, Liu H. Nanopharmaceutical-based regenerative medicine: a promising therapeutic strategy for spinal cord injury. J Mater Chem B 2021; 9:2367-2383. [PMID: 33662083 DOI: 10.1039/d0tb02740e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Spinal cord injury (SCI) is a neurological disorder that can lead to loss of perceptive and athletic function due to the severe nerve damage. To date, pieces of evidence detailing the precise pathological mechanisms in SCI are still unclear. Therefore, drug therapy cannot effectively alleviate the SCI symptoms and faces the limitations of systemic administration with large side effects. Thus, the development of SCI treatment strategies is urgent and valuable. Due to the application of nanotechnology in pharmaceutical research, nanopharmaceutical-based regenerative medicine will bring colossal development space for clinical medicine. These nanopharmaceuticals (i.e. nanocrystalline drugs and nanocarrier drugs) are designed using different types of materials or bioactive molecules, so as to improve the therapeutic effects, reduce side effects, and subtly deliver drugs, etc. Currently, an increasing number of nanopharmaceutical products have been approved by drug regulatory agencies, which has also prompted more researchers to focus on the potential treatment strategies of SCI. Therefore, the purpose of this review is to summarize and elaborate the research progress as well as the challenges and future of nanopharmaceuticals in the treatment of SCI, aiming to promote further research of nanopharmaceuticals in SCI.
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Affiliation(s)
- Chen Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China. and School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, P. R. China
| | - Zheng Xing
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
| | - Chunchen Zhang
- Key Laboratory for Biomedical Engineering of Education Ministry of China, Zhejiang University, Hangzhou, 310027, P. R. China and Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
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11
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Salihu R, Abd Razak SI, Ahmad Zawawi N, Rafiq Abdul Kadir M, Izzah Ismail N, Jusoh N, Riduan Mohamad M, Hasraf Mat Nayan N. Citric acid: A green cross-linker of biomaterials for biomedical applications. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110271] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Abstract
Spinal cord injury results in significant loss of motor, sensory, and autonomic functions. Although a wide range of therapeutic agents have been shown to attenuate secondary injury or promote regeneration/repair in animal models of spinal cord injury, clinical translation of these strategies has been limited, in part due to difficulty in safely and effectively achieving therapeutic concentrations in the injured spinal cord tissue. Hydrogel-based drug delivery systems offer unique opportunities to locally deliver drugs to the injured spinal cord with sufficient dose and duration, while avoiding deleterious side effects associated with systemic drug administration. Such local drug delivery systems can be readily fabricated from biocompatible and biodegradable materials. In this review, hydrogel-based strategies for local drug delivery to the injured spinal cord are extensively reviewed, and recommendations are made for implementation.
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Affiliation(s)
- Robert B Shultz
- School of Biomedical Engineering, Science and Health Systems, Drexel University; Department of Neurosurgery; Department of Bioengineering, University of Pennsylvania; New Jersey Center for Biomaterials, Rutgers - The State University of New Jersey, Piscataway, NJ; Center for Neurotrauma, Neurodegeneration & Restoration, Corporal Michael J. Crescenz Veterans Affairs Medical Center, Philadelphia, PA, USA
| | - Yinghui Zhong
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA
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13
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Gottipati MK, D'Amato AR, Ziemba AM, Popovich PG, Gilbert RJ. TGFβ3 is neuroprotective and alleviates the neurotoxic response induced by aligned poly-l-lactic acid fibers on naïve and activated primary astrocytes. Acta Biomater 2020; 117:273-282. [PMID: 33035696 DOI: 10.1016/j.actbio.2020.09.057] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/24/2020] [Accepted: 09/29/2020] [Indexed: 12/17/2022]
Abstract
Following spinal cord injury, astrocytes at the site of injury become reactive and exhibit a neurotoxic (A1) phenotype, which leads to neuronal death. In addition, the glial scar, which is composed of reactive astrocytes, acts as a chemical and physical barrier to subsequent axonal regeneration. Biomaterials, specifically electrospun fibers, induce a migratory phenotype of astrocytes and promote regeneration of axons following acute spinal cord injury in preclinical models. However, no study has examined the potential of electrospun fibers or biomaterials in general to modulate neurotoxic (A1) or neuroprotective (A2) astrocytic phenotypes. To assess astrocyte reactivity in response to aligned poly-l-lactic acid microfibers, naïve spinal cord astrocytes or spinal cord astrocytes primed towards the neurotoxic phenotype (A1) were cultured on fibrous scaffolds. Gene expression analysis of the pan-reactive astrocyte makers (GFAP, Lcn2, SerpinA3), A1 specific markers (H2-D1, SerpinG1), and A2 specific makers (Emp1, S100a10) was done using quantitative polymerase chain reaction (qPCR). Electrospun fibers mildly increased the expression of the pan-reactive and A1-specific markers, showing the ability of fibrous materials to induce a more reactive, A1 phenotype. However, when naïve or activated astrocytes were cultured on fibers in the presence of transforming growth factor β3 (TGFβ3), the expression of A1-specific markers was greatly reduced, which in turn improved neuronal survival in culture.
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14
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Abalymov A, Parakhonskiy B, Skirtach AG. Polymer- and Hybrid-Based Biomaterials for Interstitial, Connective, Vascular, Nerve, Visceral and Musculoskeletal Tissue Engineering. Polymers (Basel) 2020; 12:E620. [PMID: 32182751 PMCID: PMC7182904 DOI: 10.3390/polym12030620] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/19/2020] [Accepted: 03/03/2020] [Indexed: 12/11/2022] Open
Abstract
In this review, materials based on polymers and hybrids possessing both organic and inorganic contents for repairing or facilitating cell growth in tissue engineering are discussed. Pure polymer based biomaterials are predominantly used to target soft tissues. Stipulated by possibilities of tuning the composition and concentration of their inorganic content, hybrid materials allow to mimic properties of various types of harder tissues. That leads to the concept of "one-matches-all" referring to materials possessing the same polymeric base, but different inorganic content to enable tissue growth and repair, proliferation of cells, and the formation of the ECM (extra cellular matrix). Furthermore, adding drug delivery carriers to coatings and scaffolds designed with such materials brings additional functionality by encapsulating active molecules, antibacterial agents, and growth factors. We discuss here materials and methods of their assembly from a general perspective together with their applications in various tissue engineering sub-areas: interstitial, connective, vascular, nervous, visceral and musculoskeletal tissues. The overall aims of this review are two-fold: (a) to describe the needs and opportunities in the field of bio-medicine, which should be useful for material scientists, and (b) to present capabilities and resources available in the area of materials, which should be of interest for biologists and medical doctors.
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Affiliation(s)
- Anatolii Abalymov
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
| | | | - Andre G. Skirtach
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
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15
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Madhusudanan P, Raju G, Shankarappa S. Hydrogel systems and their role in neural tissue engineering. J R Soc Interface 2020; 17:20190505. [PMID: 31910776 PMCID: PMC7014813 DOI: 10.1098/rsif.2019.0505] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/02/2019] [Indexed: 12/27/2022] Open
Abstract
Neural tissue engineering (NTE) is a rapidly progressing field that promises to address several serious neurological conditions that are currently difficult to treat. Selecting the right scaffolding material to promote neural and non-neural cell differentiation as well as axonal growth is essential for the overall design strategy for NTE. Among the varieties of scaffolds, hydrogels have proved to be excellent candidates for culturing and differentiating cells of neural origin. Considering the intrinsic resistance of the nervous system against regeneration, hydrogels have been abundantly used in applications that involve the release of neurotrophic factors, antagonists of neural growth inhibitors and other neural growth-promoting agents. Recent developments in the field include the utilization of encapsulating hydrogels in neural cell therapy for providing localized trophic support and shielding neural cells from immune activity. In this review, we categorize and discuss the various hydrogel-based strategies that have been examined for neural-specific applications and also highlight their strengths and weaknesses. We also discuss future prospects and challenges ahead for the utilization of hydrogels in NTE.
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Affiliation(s)
| | | | - Sahadev Shankarappa
- Centre for Nanosciences and Molecular Medicine, Amrita Institute of Medical Sciences and Research Center, Amrita Vishwa Vidyapeetham, Kochi 682041, India
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16
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Liu S, Xie YY, Wang B. Role and prospects of regenerative biomaterials in the repair of spinal cord injury. Neural Regen Res 2019; 14:1352-1363. [PMID: 30964053 PMCID: PMC6524500 DOI: 10.4103/1673-5374.253512] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 12/20/2018] [Indexed: 12/12/2022] Open
Abstract
Axonal junction defects and an inhibitory environment after spinal cord injury seriously hinder the regeneration of damaged tissues and neuronal functions. At the site of spinal cord injury, regenerative biomaterials can fill cavities, deliver curative drugs, and provide adsorption sites for transplanted or host cells. Some regenerative biomaterials can also inhibit apoptosis, inflammation and glial scar formation, or further promote neurogenesis, axonal growth and angiogenesis. This review summarized a variety of biomaterial scaffolds made of natural, synthetic, and combined materials applied to spinal cord injury repair. Although these biomaterial scaffolds have shown a certain therapeutic effect in spinal cord injury repair, there are still many problems to be resolved, such as product standards and material safety and effectiveness.
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Affiliation(s)
- Shuo Liu
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Yuan-Yuan Xie
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
| | - Bin Wang
- Clinical Stem Cell Center, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu Province, China
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Song YH, Agrawal NK, Griffin JM, Schmidt CE. Recent advances in nanotherapeutic strategies for spinal cord injury repair. Adv Drug Deliv Rev 2019; 148:38-59. [PMID: 30582938 PMCID: PMC6959132 DOI: 10.1016/j.addr.2018.12.011] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 11/12/2018] [Accepted: 12/17/2018] [Indexed: 12/11/2022]
Abstract
Spinal cord injury (SCI) is a devastating and complicated condition with no cure available. The initial mechanical trauma is followed by a secondary injury characterized by inflammatory cell infiltration and inhibitory glial scar formation. Due to the limitations posed by the blood-spinal cord barrier, systemic delivery of therapeutics is challenging. Recent development of various nanoscale strategies provides exciting and promising new means of treating SCI by crossing the blood-spinal cord barrier and delivering therapeutics. As such, we discuss different nanomaterial fabrication methods and provide an overview of recent studies where nanomaterials were developed to modulate inflammatory signals, target inhibitory factors in the lesion, and promote axonal regeneration after SCI. We also review emerging areas of research such as optogenetics, immunotherapy and CRISPR-mediated genome editing where nanomaterials can provide synergistic effects in developing novel SCI therapy regimens, as well as current efforts and barriers to clinical translation of nanomaterials.
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Affiliation(s)
- Young Hye Song
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Nikunj K Agrawal
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Jonathan M Griffin
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Christine E Schmidt
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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18
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de la Vega L, Lee C, Sharma R, Amereh M, Willerth SM. 3D bioprinting models of neural tissues: The current state of the field and future directions. Brain Res Bull 2019; 150:240-249. [DOI: 10.1016/j.brainresbull.2019.06.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Revised: 05/30/2019] [Accepted: 06/06/2019] [Indexed: 01/01/2023]
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19
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Mechanistic Evaluation of the Opposite Effects on Initial Burst Induced by Two Similar Hydrophilic Additives From Octreotide Acetate–Loaded PLGA Microspheres. J Pharm Sci 2019; 108:2367-2376. [DOI: 10.1016/j.xphs.2019.02.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 02/12/2019] [Accepted: 02/13/2019] [Indexed: 02/07/2023]
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20
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Xing H, Ren X, Yin H, Sun C, Jiang T. Construction of a NT-3 sustained-release system cross-linked with an acellular spinal cord scaffold and its effects on differentiation of cultured bone marrow mesenchymal stem cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109902. [PMID: 31500033 DOI: 10.1016/j.msec.2019.109902] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 05/28/2019] [Accepted: 06/16/2019] [Indexed: 12/24/2022]
Abstract
OBJECTIVE This study sought to promote the adhesion, proliferation and differentiation of rat bone marrow mesenchymal stem cells by constructing a neurotrophin-3 (NT-3) sustained-release system cross-linked with an acellular spinal cord scaffold. METHODS 1-Ethyl-3-[3-dimethylaminopropyl] carbodiimide hydrochloride (EDC) chemistry combined with chemical extraction was used to construct an acellular spinal cord scaffold. The decellularization completion was validated. An EDC cross-linking method was used to construct the NT-3 cross-linked acellular spinal scaffold. ELISA was used to verify sustained release of NT-3; the dorsal root ganglion method was used to verify the biological activity of the sustained-release NT-3. DAPI staining was used to confirm the adhesion of the cultured rat bone marrow mesenchymal stem cells (P3) to the NT-3 scaffold, and cell counting kit-8 (CCK-8) analysis was used to verify the cellular proliferation after 24 h and 48 h of culture. Immunohistochemistry was used to confirm the differentiation of the bone marrow cells into neuron-like cells. RESULTS An NT-3 sustained-release system cross-linked to an acellular spinal cord scaffold was successfully constructed. Sustained-release NT-3 could persist for 35 days and had biological activity for at least 21 days. It could promote the adhesion, proliferation and differentiation of rat bone marrow mesenchymal stem cells. CONCLUSION As a composite scaffold, an NT-3 sustained-release system cross-linked with an acellular spinal cord scaffold has potential applications for tissue engineering.
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Affiliation(s)
- Hui Xing
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, The Third Military Medical University, Chongqing 400037, PR China
| | - Xianjun Ren
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, The Third Military Medical University, Chongqing 400037, PR China
| | - Hong Yin
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, The Third Military Medical University, Chongqing 400037, PR China
| | - Chao Sun
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, The Third Military Medical University, Chongqing 400037, PR China
| | - Tao Jiang
- Department of Orthopedics, Xinqiao Hospital, Army Medical University, The Third Military Medical University, Chongqing 400037, PR China.
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21
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George J, Hsu CC, Nguyen LTB, Ye H, Cui Z. Neural tissue engineering with structured hydrogels in CNS models and therapies. Biotechnol Adv 2019; 42:107370. [PMID: 30902729 DOI: 10.1016/j.biotechadv.2019.03.009] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 02/25/2019] [Accepted: 03/11/2019] [Indexed: 01/27/2023]
Abstract
The development of techniques to create and use multiphase microstructured hydrogels (granular hydrogels or microgels) has enabled the generation of cultures with more biologically relevant architecture and use of structured hydrogels is especially pertinent to the development of new types of central nervous system (CNS) culture models and therapies. We review material choice and the customisation of hydrogel structure, as well as the use of hydrogels in developmental models. Combining the use of structured hydrogel techniques with developmentally relevant tissue culture approaches will enable the generation of more relevant models and treatments to repair damaged CNS tissue architecture.
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Affiliation(s)
- Julian George
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Chia-Chen Hsu
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Linh Thuy Ba Nguyen
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Hua Ye
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
| | - Zhanfeng Cui
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
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22
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Stem cell paracrine effect and delivery strategies for spinal cord injury regeneration. J Control Release 2019; 300:141-153. [PMID: 30851286 DOI: 10.1016/j.jconrel.2019.02.038] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 02/22/2019] [Accepted: 02/25/2019] [Indexed: 12/29/2022]
Abstract
Spinal cord injury (SCI) is a complicated neuropathological condition that results in functional dysfunction and paralysis. Various treatments have been proposed including drugs, biological factors and cells administered in several ways. Stem cell therapy offers a potentially revolutionary mode to repair the damaged spinal cord after injury. Initially, stem cells were considered promising for replacing cells and tissue lost after SCI. Many studies looked at their differentiation to replace neuronal and glial cells for a better functional outcome. However, it is becoming clear that different functional improvements recognized to stem cells are due to biomolecular activities by the transplanted stem cells rather than cell replacement. This review aimed to discuss the paracrine mechanisms for tissue repair and regeneration after stem cell transplantation in SCI. It focuses on stem cell factor production, effect in tissue restoration, and novel delivery strategies to use them for SCI therapy.
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Kornev VA, Grebenik EA, Solovieva AB, Dmitriev RI, Timashev PS. Hydrogel-assisted neuroregeneration approaches towards brain injury therapy: A state-of-the-art review. Comput Struct Biotechnol J 2018; 16:488-502. [PMID: 30455858 PMCID: PMC6232648 DOI: 10.1016/j.csbj.2018.10.011] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/18/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
Recent years have witnessed the development of an enormous variety of hydrogel-based systems for neuroregeneration. Formed from hydrophilic polymers and comprised of up to 90% of water, these three-dimensional networks are promising tools for brain tissue regeneration. They can assist structural and functional restoration of damaged tissues by providing mechanical support and navigating cell fate. Hydrogels also show the potential for brain injury therapy due to their broadly tunable physical, chemical, and biological properties. Hydrogel polymers, which have been extensively implemented in recent brain injury repair studies, include hyaluronic acid, collagen type I, alginate, chitosan, methylcellulose, Matrigel, fibrin, gellan gum, self-assembling peptides and proteins, poly(ethylene glycol), methacrylates, and methacrylamides. When viewed as tools for neuroregeneration, hydrogels can be divided into: (1) hydrogels suitable for brain injury therapy, (2) hydrogels that do not meet basic therapeutic requirements and (3) promising hydrogels which meet the criteria for further investigations. Our analysis shows that fibrin, collagen I and self-assembling peptide-based hydrogels display very attractive properties for neuroregeneration.
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Affiliation(s)
- Vladimir A. Kornev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Ekaterina A. Grebenik
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
| | - Anna B. Solovieva
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
| | - Ruslan I. Dmitriev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- School of Biochemistry and Cell Biology, University College Cork, Cork, Ireland
| | - Peter S. Timashev
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., Moscow 119991, Russian Federation
- N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 Kosygina st., Moscow 117977, Russian Federation
- Institute of Photonic Technologies, Research Center “Crystallography and Photonics” Russian Academy of Sciences, 2 Pionerskaya st., Troitsk, Moscow 108840, Russian Federation
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Ding D, Zhu Q. Recent advances of PLGA micro/nanoparticles for the delivery of biomacromolecular therapeutics. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 92:1041-1060. [DOI: 10.1016/j.msec.2017.12.036] [Citation(s) in RCA: 162] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/18/2017] [Accepted: 12/30/2017] [Indexed: 01/06/2023]
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25
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Mauri E, Negri A, Rebellato E, Masi M, Perale G, Rossi F. Hydrogel-Nanoparticles Composite System for Controlled Drug Delivery. Gels 2018; 4:E74. [PMID: 30674850 PMCID: PMC6209253 DOI: 10.3390/gels4030074] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 08/20/2018] [Accepted: 08/29/2018] [Indexed: 12/28/2022] Open
Abstract
Biodegradable poly(ethylene glycol)-block-poly(-lactic acid) (PEG-b-PLA) nanoparticles (NPs) were prepared by nanoprecipitation with controlled dimension and with different electric charges, as monitored by dynamic light scattering (DLS). Then NPs were loaded within hydrogels (HG) developed for biomedical applications in the central nervous system, with different pore sizes (30 and 90 nm). The characteristics of the resulting composite hydrogel-NPs system were firstly studied in terms of ability to control the release of small steric hindrance drug mimetic. Then, diffusion-controlled release of different charged NPs from different entangled hydrogels was studied in vitro and correlated with NPs electric charges and hydrogel mean mesh size. These studies showed different trends, that depend on NPs superficial charge and HG mesh size. Release experiments and diffusion studies, then rationalized by mathematical modeling, allowed us to build different drug delivery devices that can satisfy different medical needs.
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Affiliation(s)
- Emanuele Mauri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Anna Negri
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Erica Rebellato
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Maurizio Masi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
| | - Giuseppe Perale
- Biomaterials Laboratory, Institute for Mechanical Engineering and Materials Technology, SUPSI-University of Applied Sciences and Arts of Southern Switzerland, via Cantonale 2C, Galleria 2, 6928 Manno, Switzerland.
| | - Filippo Rossi
- Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano, via Mancinelli 7, 20131 Milan, Italy.
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Mauri E, Cappella F, Masi M, Rossi F. PEGylation influences drug delivery from nanogels. J Drug Deliv Sci Technol 2018. [DOI: 10.1016/j.jddst.2018.05.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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27
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Lu X, Perera TH, Aria AB, Callahan LAS. Polyethylene glycol in spinal cord injury repair: a critical review. J Exp Pharmacol 2018; 10:37-49. [PMID: 30100766 PMCID: PMC6067622 DOI: 10.2147/jep.s148944] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Polyethylene glycol (PEG) is a synthetic biocompatible polymer with many useful properties for developing therapeutics to treat spinal cord injury. Direct application of PEG as a fusogen to the injury site can repair cell membranes, mitigate oxidative stress, and promote axonal regeneration to restore motor function. PEG can be covalently or noncovalently conjugated to proteins, peptides, and nanoparticles to limit their clearance by the reticuloendothelial system, reduce their immunogenicity, and facilitate crossing the blood-brain barrier. Cross-linking PEG produces hydrogels that can act as delivery vehicles for bioactive molecules including growth factors and cells such as bone marrow stromal cells, which can modulate the inflammatory response and support neural tissue regeneration. PEG hydrogels can be cross-linked in vitro or delivered as an injectable formulation that can gel in situ at the site of injury. Chemical and mechanical properties of PEG hydrogels are tunable and must be optimized for creating the most favorable delivery environment. Peptides mimicking extracellular matrix protein such as laminin and n-cadherin can be incorporated into PEG hydrogels to promote neural differentiation and axonal extensions. Different hydrogel cross-linking densities and stiffness will also affect the differentiation process. PEG hydrogels with a gradient of peptide concentrations or Young's modulus have been developed to systematically study these factors. This review will describe these and other recent advancements of PEG in the field of spinal cord injury in greater detail.
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Affiliation(s)
- Xi Lu
- Department of Neurosurgery, Center for Stem Cells and Regenerative Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA,
| | - T Hiran Perera
- Department of Neurosurgery, Center for Stem Cells and Regenerative Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA,
| | - Alexander B Aria
- Department of Neurosurgery, Center for Stem Cells and Regenerative Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA,
| | - Laura A Smith Callahan
- Department of Neurosurgery, Center for Stem Cells and Regenerative Medicine, University of Texas Health Science Center at Houston, Houston, TX, USA,
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Niemczyk B, Sajkiewicz P, Kolbuk D. Injectable hydrogels as novel materials for central nervous system regeneration. J Neural Eng 2018; 15:051002. [DOI: 10.1088/1741-2552/aacbab] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Aijie C, Xuan L, Huimin L, Yanli Z, Yiyuan K, Yuqing L, Longquan S. Nanoscaffolds in promoting regeneration of the peripheral nervous system. Nanomedicine (Lond) 2018; 13:1067-1085. [PMID: 29790811 DOI: 10.2217/nnm-2017-0389] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The ability to surgically repair peripheral nerve injuries is urgently needed. However, traditional tissue engineering techniques, such as autologous nerve transplantation, have some limitations. Therefore, tissue engineered autologous nerve grafts have become a suitable choice for nerve repair. Novel tissue engineering techniques derived from nanostructured conduits have been shown to be superior to other successful functional neurological structures with different scaffolds in terms of providing the required structures and properties. Additionally, different biomaterials and growth factors have been added to nerve scaffolds to produce unique biological effects that promote nerve regeneration and functional recovery. This review summarizes the application of different nanoscaffolds in peripheral nerve repair and further analyzes how the nanoscaffolds promote peripheral nerve regeneration.
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Affiliation(s)
- Chen Aijie
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
- Guangdong Provincial Key Laboratory of Construction & Detection in Tissue Engineering, Guangzhou 510515, China
| | - Lai Xuan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Liang Huimin
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Zhang Yanli
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Kang Yiyuan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Lin Yuqing
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
| | - Shao Longquan
- Nanfang Hospital, Southern Medical University, 1838 Guangzhou Avenue North, Guangzhou, Guangdong 510515, China
- Guangdong Provincial Key Laboratory of Construction & Detection in Tissue Engineering, Guangzhou 510515, China
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Oliveira EP, Silva-Correia J, Reis RL, Oliveira JM. Biomaterials Developments for Brain Tissue Engineering. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1078:323-346. [PMID: 30357631 DOI: 10.1007/978-981-13-0950-2_17] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Central Nervous System (CNS) is a highly complex organ that works as the control centre of the body, managing vital and non-vital functions. Neuro-diseases can lead to the degeneration of neural tissue, breakage of the neuronal networks which can affect vital functions and originate cognitive deficits. The complexity of the neural networks, their components and the low regenerative capacity of the CNS are on the basis for the lack of recovery, having the need for therapies that can promote tissue repair and recovery. Most brain processes are mediated through molecules (e.g. cytokines, neurotransmitters) and cells response accordingly and to surrounding cues, either biological or physical, which offers molecule administration and/or cell transplantation a great potential for use in brain recovery. Biomaterials and in particular, of natural-origin are attractive candidates owed to their intrinsic biological cues and biocompatibility and degradability. Through the use of biomaterials, it is possible to protect the cells/molecules from body clearance, enzymatic degradation while maintaining the components in a place of interest. Moreover, by means of combining several components, it is possible to obtain a more targeted and controlled delivery, to image the biomaterial implantation and its degradation over time and tackling simultaneously occurring events (cell death and inflammation) in brain diseases. In this chapter, it is reviewed some brain-affecting diseases and the current developments on tissue engineering approaches for a functional recovery of the brain from those diseases.
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Affiliation(s)
- Eduarda P Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Joana Silva-Correia
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal.,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal
| | - Joaquim M Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, University of Minho, Guimarães, Portugal. .,ICVS/3Bs - PT Government Associate Laboratory, Braga/Guimarães, Portugal. .,The Discoveries Centre for Regenerative and Precision Medicine, Headquarters at University of Minho, Guimarães, Portugal.
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López-Cebral R, Silva-Correia J, Reis RL, Silva TH, Oliveira JM. Peripheral Nerve Injury: Current Challenges, Conventional Treatment Approaches, and New Trends in Biomaterials-Based Regenerative Strategies. ACS Biomater Sci Eng 2017; 3:3098-3122. [DOI: 10.1021/acsbiomaterials.7b00655] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- R. López-Cebral
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. Silva-Correia
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - R. L. Reis
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - T. H. Silva
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
| | - J. M. Oliveira
- 3Bs Research Group, Biomaterials, Biodegradables and Biomimetics, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal
- ICVS/3Bs, PT Government Associate Laboratory, University of Minho, Braga/Guimarães, Portugal
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Li R, Pang Z, He H, Lee S, Qin J, Wu J, Pang L, Wang J, Yang VC. Drug depot-anchoring hydrogel: A self-assembling scaffold for localized drug release and enhanced stem cell differentiation. J Control Release 2017; 261:234-245. [PMID: 28694033 DOI: 10.1016/j.jconrel.2017.07.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 06/26/2017] [Accepted: 07/06/2017] [Indexed: 12/30/2022]
Abstract
Localized and long-term delivery of growth factors has been a long-standing challenge for stem cell-based tissue engineering. In the current study, a polymeric drug depot-anchoring hydrogel scaffold was developed for the sustained release of macromolecules to enhance the differentiation of stem cells. Self-assembling peptide (RADA16)-modified drug depots (RDDs) were prepared and anchored to a RADA16 hydrogel. The anchoring effect of RADA16 modification on the RDDs was tested both in vitro and in vivo. It was shown that the in vitro leakage of RDDs from the RADA16 hydrogel was significantly less than that of the unmodified drug depots (DDs). In addition, the in vivo retention of injected hydrogel-incorporated RDDs was significantly longer than that of hydrogel-incorporated unmodified DDs. A model drug, vascular endothelial growth factor (VEGF), was encapsulated in RDDs (V-RDDs) as drug depot that was then anchored to the hydrogel. The release of VEGF could be sustained for 4weeks. Endothelial progenitor cells (EPCs) were cultured on the V-RDDs-anchoring scaffold and enhanced cell proliferation and differentiation were observed, compared with a VEGF-loaded scaffold. Furthermore, this scaffold laden with EPCs promoted neovascularization in an animal model of hind limb ischemia. These results demonstrate that self-assembling hydrogel-anchored drug-loaded RDDs are promising for localized and sustained drug release, and can effectively enhance the proliferation and differentiation of resident stem cells, thus lead to successful tissue regeneration.
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Affiliation(s)
- Ruixiang Li
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China
| | - Zhiqing Pang
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China
| | - Huining He
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, China
| | - Seungjin Lee
- College of Pharmacy, Ewha Women's University, Seoul 03760, Republic of Korea
| | - Jing Qin
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China
| | - Jian Wu
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China
| | - Liang Pang
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China
| | - Jianxin Wang
- School of Pharmacy, Fudan University, Key Laboratory of Smart Drug Delivery, Ministry of Education, Shanghai 201203, China.
| | - Victor C Yang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, China; College of Pharmacy, University of Michigan, Ann Arbor, MI 48109-1065, USA.
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Bahari Javan N, Montazeri H, Rezaie Shirmard L, Jafary Omid N, Barbari GR, Amini M, Ghahremani MH, Rafiee-Tehrani M, Abedin Dorkoosh F. Preparation, characterization and in vivo evaluation of a combination delivery system based on hyaluronic acid/jeffamine hydrogel loaded with PHBV/PLGA blend nanoparticles for prolonged delivery of Teriparatide. Eur J Pharm Sci 2017; 101:167-181. [DOI: 10.1016/j.ejps.2017.02.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 02/03/2017] [Accepted: 02/09/2017] [Indexed: 01/28/2023]
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Shultz RB, Wang Z, Nong J, Zhang Z, Zhong Y. Local delivery of thyroid hormone enhances oligodendrogenesis and myelination after spinal cord injury. J Neural Eng 2017; 14:036014. [PMID: 28358726 DOI: 10.1088/1741-2552/aa6450] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
OBJECTIVE Traumatic spinal cord injury (SCI) causes apoptosis of myelin-forming oligodendrocytes (OLs) and demyelination of surviving axons, resulting in conduction failure. Remyelination of surviving denuded axons provides a promising therapeutic target for spinal cord repair. While cell transplantation has demonstrated efficacy in promoting remyelination and functional recovery, the lack of ideal cell sources presents a major obstacle to clinical application. The adult spinal cord contains oligodendrocyte precursor cells and multipotent neural stem/progenitor cells that have the capacity to differentiate into mature, myelinating OLs. However, endogenous oligodendrogenesis and remyelination processes are limited by the upregulation of remyelination-inhibitory molecules in the post-injury microenvironment. Multiple growth factors/molecules have been shown to promote OL differentiation and myelination. APPROACH In this study we screened these therapeutics and found that 3, 3', 5-triiodothyronine (T3) is the most effective in promoting oligodendrogenesis and OL maturation in vitro. However, systemic administration of T3 to achieve therapeutic doses in the injured spinal cord is likely to induce hyperthyroidism, resulting in serious side effects. MAIN RESULTS In this study we developed a novel hydrogel-based drug delivery system for local delivery of T3 to the injury site without eliciting systemic toxicity. SIGNIFICANCE Using a clinically relevant cervical contusion injury model, we demonstrate that local delivery of T3 at doses comparable to safe human doses promoted new mature OL formation and myelination after SCI.
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Affiliation(s)
- Robert B Shultz
- School of Biomedical Engineering, Science and Health Systems, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104, United States of America
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35
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Liu Z, Zhu Y, Liu X, Yeung K, Wu S. Construction of poly (vinyl alcohol)/poly (lactide-glycolide acid)/vancomycin nanoparticles on titanium for enhancing the surface self-antibacterial activity and cytocompatibility. Colloids Surf B Biointerfaces 2017; 151:165-177. [DOI: 10.1016/j.colsurfb.2016.12.016] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/12/2016] [Accepted: 12/14/2016] [Indexed: 01/11/2023]
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36
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Ordikhani F, Sheth S, Zustiak SP. Polymeric particle-mediated molecular therapies to treat spinal cord injury. Int J Pharm 2017; 516:71-81. [DOI: 10.1016/j.ijpharm.2016.11.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 11/03/2016] [Accepted: 11/08/2016] [Indexed: 11/26/2022]
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37
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Shahsavari S, Rezaie Shirmard L, Amini M, Abedin Dokoosh F. Application of Artificial Neural Networks in the Design and Optimization of a Nanoparticulate Fingolimod Delivery System Based on Biodegradable Poly(3-Hydroxybutyrate-Co-3-Hydroxyvalerate). J Pharm Sci 2017; 106:176-182. [DOI: 10.1016/j.xphs.2016.07.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 07/01/2016] [Accepted: 07/26/2016] [Indexed: 11/15/2022]
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Zuidema JM, Gilbert RJ, Osterhout DJ. Nanoparticle Technologies in the Spinal Cord. Cells Tissues Organs 2016; 202:102-115. [PMID: 27701150 DOI: 10.1159/000446647] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/09/2016] [Indexed: 11/19/2022] Open
Abstract
Nanoparticles are increasingly being studied within experimental models of spinal cord injury (SCI). They are used to image cells and tissue, move cells to specific regions of the spinal cord, and deliver therapeutic agents locally. The focus of this article is to provide a brief overview of the different types of nanoparticles being studied for spinal cord applications and present data showing the capability of nanoparticles to deliver the chondroitinase ABC (chABC) enzyme locally following acute SCI in rats. Nanoparticles releasing chABC helped promote axonal regeneration following injury, and the nanoparticles also protected the enzyme from rapid degradation. In summary, nanoparticles are viable materials for diagnostic or therapeutic applications within experimental models of SCI and have potential for future clinical use.
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Elliott Donaghue I, Tator CH, Shoichet MS. Local Delivery of Neurotrophin-3 and Anti-NogoA Promotes Repair After Spinal Cord Injury. Tissue Eng Part A 2016; 22:733-41. [PMID: 27056081 DOI: 10.1089/ten.tea.2015.0471] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Tissue and functional repair after spinal cord injury (SCI) continue to elude researchers. Neurotrophin-3 (NT-3) and anti-NogoA have been shown to promote axonal regeneration in animal models of SCI; however, localized and sustained delivery to the central nervous system (CNS) remains a critical challenge for these and other macromolecular therapeutics. An injectable drug delivery system (DDS) has previously been developed, which can provide safe local delivery to the spinal cord. This DDS, composed of poly(lactic-co-glycolic acid) (PLGA) nanoparticles (nps) dispersed in a hyaluronan methylcellulose hydrogel, was adapted for the tunable bioactive delivery of NT-3 and anti-NogoA. Furthermore, the combined delivery of NT-3 and anti-NogoA from the DDS in an impact/compression model of SCI increases axon density and improves locomotor function. The benefits of this np/hydrogel DDS observed for NT-3 and anti-NogoA demonstrate the utility of the DDS as a local delivery strategy for protein therapeutics to the CNS.
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Affiliation(s)
- Irja Elliott Donaghue
- 1 Department of Chemical Engineering and Applied Chemistry, University of Toronto , Toronto, Canada .,2 Institute of Biomaterials and Biomedical Engineering, University of Toronto , Toronto, Canada
| | - Charles H Tator
- 3 Division of Genetics and Development, Toronto Western Research Institute, University of Toronto , Toronto, Canada .,4 Krembil Neuroscience Centre, Toronto Western Hospital, University Health Network , Toronto, Canada .,5 Division of Neurosurgery, Department of Surgery, University of Toronto , Toronto, Canada
| | - Molly S Shoichet
- 1 Department of Chemical Engineering and Applied Chemistry, University of Toronto , Toronto, Canada .,2 Institute of Biomaterials and Biomedical Engineering, University of Toronto , Toronto, Canada .,6 Donnelly Centre for Cellular & Biomolecular Research, University of Toronto, Toronto, Canada
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Pakulska MM, Elliott Donaghue I, Obermeyer JM, Tuladhar A, McLaughlin CK, Shendruk TN, Shoichet MS. Encapsulation-free controlled release: Electrostatic adsorption eliminates the need for protein encapsulation in PLGA nanoparticles. SCIENCE ADVANCES 2016; 2:e1600519. [PMID: 27386554 PMCID: PMC4928928 DOI: 10.1126/sciadv.1600519] [Citation(s) in RCA: 105] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 05/03/2016] [Indexed: 05/04/2023]
Abstract
Encapsulation of therapeutic molecules within polymer particles is a well-established method for achieving controlled release, yet challenges such as low loading, poor encapsulation efficiency, and loss of protein activity limit clinical translation. Despite this, the paradigm for the use of polymer particles in drug delivery has remained essentially unchanged for several decades. By taking advantage of the adsorption of protein therapeutics to poly(lactic-co-glycolic acid) (PLGA) nanoparticles, we demonstrate controlled release without encapsulation. In fact, we obtain identical, burst-free, extended-release profiles for three different protein therapeutics with and without encapsulation in PLGA nanoparticles embedded within a hydrogel. Using both positively and negatively charged proteins, we show that short-range electrostatic interactions between the proteins and the PLGA nanoparticles are the underlying mechanism for controlled release. Moreover, we demonstrate tunable release by modifying nanoparticle concentration, nanoparticle size, or environmental pH. These new insights obviate the need for encapsulation and offer promising, translatable strategies for a more effective delivery of therapeutic biomolecules.
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Affiliation(s)
- Malgosia M. Pakulska
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Irja Elliott Donaghue
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Jaclyn M. Obermeyer
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Anup Tuladhar
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
| | - Christopher K. McLaughlin
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Tyler N. Shendruk
- The Rudolf Peierls Centre for Theoretical Physics, University of Oxford, Oxford OX1 3NP, UK
| | - Molly S. Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
- Institute for Biomaterials and Biomedical Engineering, University of Toronto, Ontario M5S 3G9, Canada
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
- Corresponding author.
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41
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Khaing ZZ, Agrawal NK, Park JH, Xin S, Plumton GC, Lee KH, Huang YJ, Niemerski AL, Schmidt CE, Grau JW. Localized and sustained release of brain-derived neurotrophic factor from injectable hydrogel/microparticle composites fosters spinal learning after spinal cord injury. J Mater Chem B 2016; 4:7560-7571. [DOI: 10.1039/c6tb01602b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Injectable hydrogel allows for sustained delivery of growth factor resulting in spinal mediated learning after injury.
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Affiliation(s)
- Zin Z. Khaing
- Department of Biomedical Engineering
- University of Florida
- Gainesville
- USA
| | - Nikunj K. Agrawal
- Department of Biomedical Engineering
- University of Florida
- Gainesville
- USA
| | - James H. Park
- College of Medicine
- University of Florida
- Gainesville
- USA
| | - Shangjing Xin
- Department of Materials Science and Engineering
- University of Florida
- Gainesville
- USA
| | | | - Kuan H. Lee
- Department of Neurobiology
- University of Pittsburgh School of Medicine
- Pittsburgh
- USA
| | - Yung-Jen Huang
- Department of Psychology
- Texas A&M University
- College Station
- USA
| | | | | | - James W. Grau
- Department of Psychology
- Texas A&M University
- College Station
- USA
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42
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Zhuang Y, Shen H, Yang F, Wang X, Wu D. Synthesis and characterization of PLGA nanoparticle/4-arm-PEG hybrid hydrogels with controlled porous structures. RSC Adv 2016. [DOI: 10.1039/c6ra08404d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Here, we constructed PLGA NP crosslinked 4-arm-PEG hybrid hydrogels with adjustable porous structures, surface properties and mechanical properties.
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Affiliation(s)
- Yaping Zhuang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hong Shen
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory of Polymer Physics & Chemistry
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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43
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Trimaille T, Pertici V, Gigmes D. Recent advances in synthetic polymer based hydrogels for spinal cord repair. CR CHIM 2016. [DOI: 10.1016/j.crci.2015.03.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Zhao F, Yao D, Guo R, Deng L, Dong A, Zhang J. Composites of Polymer Hydrogels and Nanoparticulate Systems for Biomedical and Pharmaceutical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2015; 5:2054-2130. [PMID: 28347111 PMCID: PMC5304774 DOI: 10.3390/nano5042054] [Citation(s) in RCA: 198] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 11/18/2015] [Accepted: 11/20/2015] [Indexed: 12/25/2022]
Abstract
Due to their unique structures and properties, three-dimensional hydrogels and nanostructured particles have been widely studied and shown a very high potential for medical, therapeutic and diagnostic applications. However, hydrogels and nanoparticulate systems have respective disadvantages that limit their widespread applications. Recently, the incorporation of nanostructured fillers into hydrogels has been developed as an innovative means for the creation of novel materials with diverse functionality in order to meet new challenges. In this review, the fundamentals of hydrogels and nanoparticles (NPs) were briefly discussed, and then we comprehensively summarized recent advances in the design, synthesis, functionalization and application of nanocomposite hydrogels with enhanced mechanical, biological and physicochemical properties. Moreover, the current challenges and future opportunities for the use of these promising materials in the biomedical sector, especially the nanocomposite hydrogels produced from hydrogels and polymeric NPs, are discussed.
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Affiliation(s)
- Fuli Zhao
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Dan Yao
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Ruiwei Guo
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Liandong Deng
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Anjie Dong
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
| | - Jianhua Zhang
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
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45
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Zuidema JM, Provenza C, Caliendo T, Dutz S, Gilbert RJ. Magnetic NGF-releasing PLLA/iron oxide nanoparticles direct extending neurites and preferentially guide neurites along aligned electrospun microfibers. ACS Chem Neurosci 2015; 6:1781-8. [PMID: 26322376 DOI: 10.1021/acschemneuro.5b00189] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Nerve growth factor releasing composite nanoparticles (NGF-cNPs) were developed to direct the extension of neurite outgrowth from dorsal root ganglia (DRG). Iron oxide magnetic nanoparticles were incorporated into poly-l-lactic acid (PLLA) nanoparticles in order to position the NGF-cNPs in a culture dish. Neurites growing from DRG extended toward the NGF released from the NGF-cNPs. DRG were then cultured on aligned PLLA microfibers in the presence of NGF-cNPs, and these biomaterials combined to align DRG neurite extension along one axis and preferentially toward the NGF-cNPs. This combinatorial biomaterial approach shows promise as a strategy to direct the extension of regenerating neurites.
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Affiliation(s)
- Jonathan M. Zuidema
- Department
of Chemistry and Biochemistry, University of California—San Diego, La Jolla, California 92093, United States
| | | | | | - Silvio Dutz
- Institute
of Biomedical Engineering and Informatics (BMTI), Technische Universität Ilmenau, G-Kirchhoff-Str. 2, D-98693 Ilmenau, Germany
- Department
of Nano Biophotonics, Leibniz Institute of Photonic Technology (IPHT), A.-Einstein-Str. 9, D-07745 Jena, Germany
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46
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Rezaie Shirmard L, Bahari Javan N, Khoshayand MR, Kebriaee-zadeh A, Dinarvand R, Dorkoosh FA. Nanoparticulate fingolimod delivery system based on biodegradable poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV): design, optimization, characterization and in-vitro evaluation. Pharm Dev Technol 2015; 22:860-870. [DOI: 10.3109/10837450.2015.1108982] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Leila Rezaie Shirmard
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Nika Bahari Javan
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Mohammad Reza Khoshayand
- Department of Drug and Food Control and Pharmaceutical Quality Assurance Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Abbas Kebriaee-zadeh
- Department of Pharmacoeconomy and Pharmaceutical Administration, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran, and
| | - Rassoul Dinarvand
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
| | - Farid A. Dorkoosh
- Department of Pharmaceutics, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran,
- Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, Iran
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47
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Elliott Donaghue I, Shoichet MS. Controlled release of bioactive PDGF-AA from a hydrogel/nanoparticle composite. Acta Biomater 2015; 25:35-42. [PMID: 26257128 DOI: 10.1016/j.actbio.2015.08.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Revised: 07/28/2015] [Accepted: 08/05/2015] [Indexed: 12/23/2022]
Abstract
Polymer excipients, such as low molar mass poly(ethylene glycol) (PEG), have shown contradictory effects on protein stability when co-encapsulated in polymeric nanoparticles. To gain further insight into these effects, platelet-derived growth factor (PDGF-AA) was encapsulated in polymeric nanoparticles with vs. without PEG. PDGF-AA is a particularly compelling protein, as it has been demonstrated to promote cell survival and induce the oligodendrocyte differentiation of neural stem/progenitor cells (NSPCs) both in vitro and in vivo. Here we show, for the first time, the controlled release of bioactive PDGF-AA from an injectable nanoparticle/hydrogel drug delivery system (DDS). PDGF-AA was encapsulated, with high efficiency, in poly(lactide-co-glycolide) nanoparticles, and its release from the drug delivery system was followed over 21 d. Interestingly, the co-encapsulation of low molecular weight poly(ethylene glycol) increased the PDGF-AA loading but, unexpectedly, accelerated the aggregation of PDGF-AA, resulting in reduced activity and detection by enzyme-linked immunosorbent assay (ELISA). In the absence of PEG, released PDGF-AA remained bioactive as demonstrated with NSPC oligodendrocyte differentiation, similar to positive controls, and significantly different from untreated controls. This work presents a novel delivery method for differentiation factors, such as PDGF-AA, and provides insights into the contradictory effects reported in the literature of excipients, such as PEG, on the loading and release of proteins from polymeric nanoparticles. STATEMENT OF SIGNIFICANCE Previously, the polymer poly(ethylene glycol) (PEG) has been used in many biomaterials applications, from surface coatings to the encapsulation of proteins. In this work, we demonstrate that, unexpectedly, low molecular weight PEG has a deleterious effect on the release of the encapsulated protein platelet-derived growth factor AA (PDGF-AA). We also demonstrate release of bioactive PDGF-AA (in the absence of PEG). Specifically, we demonstrate the differentiation of neural stem and progenitor cells to oligodendrocytes, similar to what is observed with the addition of fresh PDGFAA. A differentiated oligodendrocyte population is a key strategy in central nervous system regeneration. This work is the first demonstration of controlled PDGF-AA release, and also brings new insights to the broader field of protein encapsulation.
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Affiliation(s)
- Irja Elliott Donaghue
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada
| | - Molly S Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Canada; Department of Chemistry, University of Toronto, Canada.
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48
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Pakulska MM, Vulic K, Tam RY, Shoichet MS. Hybrid Crosslinked Methylcellulose Hydrogel: A Predictable and Tunable Platform for Local Drug Delivery. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:5002-5008. [PMID: 26184559 DOI: 10.1002/adma.201502767] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Indexed: 06/04/2023]
Abstract
Design of experiment is used to develop a hybrid methylcellulose hydrogel that combines physical and chemical crosslinks, resulting in an injectable, in situ stiffening, and long-lasting material with predictable swelling and rheological properties. Chemical crosslinking is complete prior to injection, allowing for ease of use and storage. Controlled release of two relevant protein therapeutics and biocompatibility of the hydrogel are demonstrated.
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Affiliation(s)
- Malgosia M Pakulska
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, ON, M5S 3E5, Canada
- Institute for Biomaterials and Bioengineering, University of Toronto, 164 College St., Rm 407, Toronto, ON, M5S 3G9, Canada
| | - Katarina Vulic
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Roger Y Tam
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, ON, M5S 3E5, Canada
- Institute for Biomaterials and Bioengineering, University of Toronto, 164 College St., Rm 407, Toronto, ON, M5S 3G9, Canada
| | - Molly S Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, ON, M5S 3E5, Canada
- Institute for Biomaterials and Bioengineering, University of Toronto, 164 College St., Rm 407, Toronto, ON, M5S 3G9, Canada
- Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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O’Shea TM, Webber MJ, Aimetti AA, Langer R. Covalent Incorporation of Trehalose within Hydrogels for Enhanced Long-Term Functional Stability and Controlled Release of Biomacromolecules. Adv Healthc Mater 2015; 4:1802-12. [PMID: 26088467 PMCID: PMC4825875 DOI: 10.1002/adhm.201500334] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 05/20/2015] [Indexed: 11/06/2022]
Abstract
Hydrogels with covalently incorporated trehalose are synthesized using thiol-ene Michael addition. Trehalose hydrogels afford prolonged stabilization and -controlled release of model enzymes in vitro and in vivo as well as preservation of protein stability under heat and -lyophilization stressors. Strong and -ordered hydrogen bonding interactions within covalently incorporated trehalose hydrogels represent a possible mechanism for protein stabilization.
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Affiliation(s)
- Timothy M. O’Shea
- Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Matthew J. Webber
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Anesthesiology, Children’s Hospital Boston, 300 Longwood Avenue, Boston, MA 02115, USA
| | - Alex A. Aimetti
- InVivo Therapeutics Corporation, One Kendall Square Building 1400 East, Floor 4, Cambridge, MA 02139, USA
| | - Robert Langer
- Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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50
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Dutta D, Fauer C, Mulleneux HL, Stabenfeldt SE. Tunable Controlled Release of Bioactive SDF-1α via Protein Specific Interactions within Fibrin/Nanoparticle Composites. J Mater Chem B 2015; 3:7963-7973. [PMID: 26660666 DOI: 10.1039/c5tb00935a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The chemokine, stromal cell-derived factor 1α (SDF-1α), is a key regulator of the endogenous neural progenitor/stem cell-mediated regenerative response after neural injury. Increased and sustained bioavailability of SDF-1α in the peri-injury region is hypothesized to modulate this endogenous repair response. Here, we describe poly(lactic-co-glycolic) acid (PLGA) nanoparticles capable of releasing bioactive SDF-1α in a sustained manner over 60days after a burst of 23%. Moreover, we report a biphasic cellular response to SDF-1α concentrations thus the large initial burst release in an in vivo setting may result in supratherapeutic concentrations of SDF-1α. Specific protein-protein interactions between SDF-1α and fibrin (as well as its monomer, fibrinogen) were exploited to control the magnitude of the burst release. Nanoparticles embedded in fibrin significantly reduced the amount of SDF-1α released after 72 hrs as a function of fibrin density. Therefore, the nanoparticle/fibrin composites represented a means to independently tune the magnitude of the burst phase release from the nanoparticles while perserving a bioactive depot of SDF-1α for release over 60days.
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Affiliation(s)
- D Dutta
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - C Fauer
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - H L Mulleneux
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
| | - S E Stabenfeldt
- School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, USA
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