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Fernández-Serra R, Lekouaghet A, Peracho L, Yonesi M, Alcázar A, Chioua M, Marco-Contelles J, Pérez-Rigueiro J, Rojo FJ, Panetsos F, Guinea GV, González-Nieto D. Permselectivity of Silk Fibroin Hydrogels for Advanced Drug Delivery Neurotherapies. Biomacromolecules 2024; 25:5233-5250. [PMID: 39018332 PMCID: PMC11323009 DOI: 10.1021/acs.biomac.4c00629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2024] [Revised: 05/20/2024] [Accepted: 05/21/2024] [Indexed: 07/19/2024]
Abstract
A promising trend in tissue engineering is using biomaterials to improve the control of drug concentration in targeted tissue. These vehicular systems are of specific interest when the required treatment time window is higher than the stability of therapeutic molecules in the body. Herein, the capacity of silk fibroin hydrogels to release different molecules and drugs in a sustained manner was evaluated. We found that a biomaterial format, obtained by an entirely aqueous-based process, could release molecules of variable molecular weight and charge with a preferential delivery of negatively charged molecules. Although the theoretical modeling suggested that drug delivery was more likely to be driven by Fickian diffusion, the external media had a considerable influence on the release, with lipophilic organic solvents such as acetonitrile-methanol (ACN-MeOH) intensifying the release of hydrophobic molecules. Second, we found that silk fibroin could be used as a vehicular system to treat a variety of brain disorders as this biomaterial sustained the release of different factors with neurotrophic (brain-derived neurotrophic factor) (BDNF), chemoattractant (C-X-C motif chemokine 12) (CXCL12), anti-inflammatory (TGF-β-1), and angiogenic (VEGF) capacities. Finally, we demonstrated that this biomaterial hydrogel could release cholesteronitrone ISQ201, a nitrone with antioxidant capacity, showing neuroprotective activity in an in vitro model of ischemia-reoxygenation. Given the slow degradation rate shown by silk fibroin in many biological tissues, including the nervous system, our study expands the restricted list of drug delivery-based biomaterial systems with therapeutic capacity for both short- and especially long-term treatment windows and has merit for use with brain pathologies.
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Affiliation(s)
- Rocío Fernández-Serra
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
| | - Amira Lekouaghet
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
| | - Lorena Peracho
- Department
of Research, Hospital Universitario Ramón
y Cajal, Madrid 28034, Spain
- Proteomics
Unit, Instituto Ramón y Cajal de
Investigación Sanitaria (IRYCIS), Madrid 28034, Spain
| | - Mahdi Yonesi
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
| | - Alberto Alcázar
- Department
of Research, Hospital Universitario Ramón
y Cajal, Madrid 28034, Spain
- Proteomics
Unit, Instituto Ramón y Cajal de
Investigación Sanitaria (IRYCIS), Madrid 28034, Spain
| | - Mourad Chioua
- Laboratory
of Medicinal Chemistry, Institute of General
Organic Chemistry (CSIC), Madrid 28006, Spain
| | - José Marco-Contelles
- Laboratory
of Medicinal Chemistry, Institute of General
Organic Chemistry (CSIC), Madrid 28006, Spain
- Center
for
Biomedical Network Research on Rare Diseases (CIBERER), CIBER, ISCIII, Madrid 28029, Spain
| | - José Pérez-Rigueiro
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
- Departamento
de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid 28040, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, Madrid 28029, Spain
- Biomaterials
and Regenerative Medicine Group, Instituto de Investigación
Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, Madrid 28040, Spain
| | - Francisco J. Rojo
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
- Departamento
de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid 28040, Spain
- Biomaterials
and Regenerative Medicine Group, Instituto de Investigación
Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, Madrid 28040, Spain
| | - Fivos Panetsos
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
- Biomaterials
and Regenerative Medicine Group, Instituto de Investigación
Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, Madrid 28040, Spain
- Neurocomputing
and Neurorobotics Research Group, Faculty of Biology and Faculty of
Optics, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Gustavo V. Guinea
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
- Departamento
de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, Madrid 28040, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, Madrid 28029, Spain
- Biomaterials
and Regenerative Medicine Group, Instituto de Investigación
Sanitaria del Hospital Clínico San Carlos (IdISSC), Calle Prof. Martín Lagos s/n, Madrid 28040, Spain
| | - Daniel González-Nieto
- Center
for Biomedical Technology, Universidad Politécnica
de Madrid, Pozuelo de Alarcón 28223, Spain
- Silk
Biomed SL, Calle Navacerrada
18, Urb. Puerto Galapagar. Galapagar 28260, Spain
- Centro
de Investigación Biomédica en Red de Bioingeniería,
Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, Madrid 28029, Spain
- Departamento de
Tecnología Fotónica y Bioingeniería,
ETSI Telecomunicaciones, Universidad Politécnica
de Madrid, Madrid 28040, Spain
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2
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Rotaru-Zăvăleanu AD, Dinescu VC, Aldea M, Gresita A. Hydrogel-Based Therapies for Ischemic and Hemorrhagic Stroke: A Comprehensive Review. Gels 2024; 10:476. [PMID: 39057499 PMCID: PMC11276304 DOI: 10.3390/gels10070476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 07/12/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Stroke remains the second leading cause of death and a major cause of disability worldwide, significantly impacting individuals, families, and healthcare systems. This neurological emergency can be triggered by ischemic events, including small vessel arteriolosclerosis, cardioembolism, and large artery atherothromboembolism, as well as hemorrhagic incidents resulting from macrovascular lesions, venous sinus thrombosis, or vascular malformations, leading to significant neuronal damage. The resultant motor impairment, cognitive dysfunction, and emotional disturbances underscore the urgent need for effective therapeutic interventions. Recent advancements in biomaterials, particularly hydrogels, offer promising new avenues for stroke management. Hydrogels, composed of three-dimensional networks of hydrophilic polymers, are notable for their ability to absorb and retain substantial amounts of water. Commonly used polymers in hydrogel formulations include natural polymers like alginate, chitosan, and collagen, as well as synthetic polymers such as polyethylene glycol (PEG), polyvinyl alcohol (PVA), and polyacrylamide. Their customizable characteristics-such as their porosity, swelling behavior, mechanical strength, and degradation rates-make hydrogels ideal for biomedical applications, including drug delivery, cell delivery, tissue engineering, and the controlled release of therapeutic agents. This review comprehensively explores hydrogel-based approaches to both ischemic and hemorrhagic stroke therapy, elucidating the mechanisms by which hydrogels provide neuroprotection. It covers their application in drug delivery systems, their role in reducing inflammation and secondary injury, and their potential to support neurogenesis and angiogenesis. It also discusses current advancements in hydrogel technology and the significant challenges in translating these innovations from research into clinical practice. Additionally, it emphasizes the limited number of clinical trials utilizing hydrogel therapies for stroke and addresses the associated limitations and constraints, underscoring the need for further research in this field.
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Affiliation(s)
- Alexandra-Daniela Rotaru-Zăvăleanu
- Department of Epidemiology, University of Medicine and Pharmacy of Craiova, 2-4 Petru Rares Str., 200349 Craiova, Romania;
- Experimental Research Centre for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
| | - Venera Cristina Dinescu
- Department of Health Promotion and Occupational Medicine, University of Medicine and Pharmacy of Craiova, 2–4 Petru Rares Str., 200349 Craiova, Romania
| | - Madalina Aldea
- Psychiatry Department, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania
| | - Andrei Gresita
- Experimental Research Centre for Normal and Pathological Aging, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania;
- Department of Biomedical Sciences, New York Institute of Technology, College of Osteopathic Medicine, Old Westbury, NY 115680, USA
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3
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Ghosh S, Ghosh S, Sharma H, Bhaskar R, Han SS, Sinha JK. Harnessing the power of biological macromolecules in hydrogels for controlled drug release in the central nervous system: A review. Int J Biol Macromol 2024; 254:127708. [PMID: 37923043 DOI: 10.1016/j.ijbiomac.2023.127708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 10/20/2023] [Accepted: 10/25/2023] [Indexed: 11/07/2023]
Abstract
Hydrogels have immense potential in revolutionizing central nervous system (CNS) drug delivery, improving outcomes for neurological disorders. They serve as promising tools for controlled drug delivery to the CNS. Available hydrogel types include natural macromolecules (e.g., chitosan, hyaluronic acid, alginate), as well as hybrid hydrogels combining natural and synthetic polymers. Each type offers distinct advantages in terms of biocompatibility, mechanical properties, and drug release kinetics. Design and engineering considerations encompass hydrogel composition, crosslinking density, porosity, and strategies for targeted drug delivery. The review emphasizes factors affecting drug release profiles, such as hydrogel properties and formulation parameters. CNS drug delivery applications of hydrogels span a wide range of therapeutics, including small molecules, proteins and peptides, and nucleic acids. However, challenges like limited biodegradability, clearance, and effective CNS delivery persist. Incorporating 3D bioprinting technology with hydrogel-based CNS drug delivery holds the promise of highly personalized and precisely controlled therapeutic interventions for neurological disorders. The review explores emerging technologies like 3D bioprinting and nanotechnology as opportunities for enhanced precision and effectiveness in hydrogel-based CNS drug delivery. Continued research, collaboration, and technological advancements are vital for translating hydrogel-based therapies into clinical practice, benefiting patients with CNS disorders. This comprehensive review article delves into hydrogels for CNS drug delivery, addressing their types, design principles, applications, challenges, and opportunities for clinical translation.
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Affiliation(s)
- Shampa Ghosh
- GloNeuro, Sector 107, Vishwakarma Road, Noida, Uttar Pradesh 201301, India; ICMR - National Institute of Nutrition, Tarnaka, Hyderabad, Telangana 500007, India
| | - Soumya Ghosh
- GloNeuro, Sector 107, Vishwakarma Road, Noida, Uttar Pradesh 201301, India
| | - Hitaishi Sharma
- GloNeuro, Sector 107, Vishwakarma Road, Noida, Uttar Pradesh 201301, India
| | - Rakesh Bhaskar
- School of Chemical Engineering, Yeungnam University, Gyeonsang 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeonsang 38541, Republic of Korea.
| | - Sung Soo Han
- School of Chemical Engineering, Yeungnam University, Gyeonsang 38541, Republic of Korea; Research Institute of Cell Culture, Yeungnam University, Gyeonsang 38541, Republic of Korea.
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4
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Zhang YN, Wu Q, Zhang NN, Chen HS. Ischemic Preconditioning Alleviates Cerebral Ischemia-Reperfusion Injury by Interfering With Glycocalyx. Transl Stroke Res 2023; 14:929-940. [PMID: 36168082 DOI: 10.1007/s12975-022-01081-w] [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: 06/23/2022] [Revised: 08/08/2022] [Accepted: 09/12/2022] [Indexed: 10/14/2022]
Abstract
Ischemic preconditioning (IPC) could protect the blood-brain barrier (BBB), but the underlying mechanism is not well understood. This preclinical study aimed to investigate whether glycocalyx could be involved in the neuroprotective effect of IPC on cerebral ischemia-reperfusion injury (IRI) and the possible mechanism in rat middle cerebral artery occlusion/reperfusion (MCAO/R) model. Neurological deficit scores, infarct volume, and brain edema were measured to assess the neuroprotection of IPC. Several serum biomarkers related to glycocalyx damage, such as hyaluronic acid (HA), heparan sulfate (HS), and syndecan-1 (SYND1), were evaluated, and their changes were normalized to the ratio of postoperative/preoperative concentration. Western blot and immunofluorescence were used to evaluate the content and cellular location of HA-related metabolic enzymes. This study found that (1) IPC improved brain infarction and edema, neurological impairment, and BBB disruption in IRI rats; (2) IPC significantly up-regulated HA ratio and down-regulated HS ratio, but did not affect SYND1 ratio compared with the IRI group. Moreover, the increased HA ratio was negatively related to brain edema and neurological deficit score. (3) IPC affected HA metabolism by up-regulating hyaluronate synthase-1 and matrix metalloproteinase-2, and down-regulating hyaluronidase-1 in brain tissue. Together, this is the first report that the neuroprotective effect of IPC on IRI may be mediated through interfering with glycocalyx in the MCAO/R model.
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Affiliation(s)
- Yi-Na Zhang
- Department of Neurology, General Hospital of Northern Theater Command, 83 Wen Hua Road, Shenyang, 110016, China
- Department of Neurology, General Hospital of Northern Theater Command of China Medical University, Shenyang, 110013, China
| | - Qiong Wu
- Department of Neurology, General Hospital of Northern Theater Command, 83 Wen Hua Road, Shenyang, 110016, China
| | - Nan-Nan Zhang
- Department of Neurology, General Hospital of Northern Theater Command, 83 Wen Hua Road, Shenyang, 110016, China
| | - Hui-Sheng Chen
- Department of Neurology, General Hospital of Northern Theater Command, 83 Wen Hua Road, Shenyang, 110016, China.
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5
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Gu C, Li Y, Liu J, Liu S, Long J, Zhang Q, Duan W, Feng T, Huang J, Qiu Y, Ahmed W, Cai H, Hu Y, Wu Y, Chen L. Neural stem cell-derived exosomes-loaded adhesive hydrogel controlled-release promotes cerebral angiogenesis and neurological function in ischemic stroke. Exp Neurol 2023; 370:114547. [PMID: 37743000 DOI: 10.1016/j.expneurol.2023.114547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/31/2023] [Accepted: 09/21/2023] [Indexed: 09/26/2023]
Abstract
OBJECTIVE Ischemic stroke has become one of the leading diseases for international death, which brings burden to the economy and society. Exosomes (Exos) derived following neural stem cells (NSCs) stimulation promote neurogenesis and migration of NSCs. However, Exos themselves are easily to be removed in vivo. Our study is to investigate whether adhesive hyaluronic acid (HAD) hydrogel loading NSCs-derived-Exo (HAD-Exo) would promote the recovery of ischemic stroke. METHODS A mouse model of middle cerebral artery occlusion (MCAO) was established. PBS, Exo, HAD, and HAD-Exo groups were independently stereotactically injected in mice, respectively. The modified neurological severity score scale and behaviour tests were used to evaluate neurological improvement. Neuroimagings were used to observe the improvement of cerebral infarct volume and vessels. Immunofluorescence staining was used to verify the expression of vascular and cell proliferation-related proteins. RESULTS The structural and mechanical property of HAD and HAD-Exo were detected. Behavioral results showed that HAD-Exo significantly improved neurological functions, especially motor function. Neuroimagings showed that HAD-Exo significantly promoted infarct volume and angiogenesis. Immunofluorescence staining showed that HAD-Exo significantly promoted the cerebral angiogenesis and anti-inflammation. CONCLUSION NSCs derived exosomes-loaded adhesive HAD hydrogel controlled-release could promote cerebral angiogenesis and neurological function for ischemic stroke.
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Affiliation(s)
- Chenyang Gu
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China; Department of Neurology, Affiliated Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, PR China
| | - Yajing Li
- The Tenth Affiliated Hospital of Southern Medical University (Dongguan People's Hospital), Dongguan 523059, PR China
| | - Jiale Liu
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Sitian Liu
- Guangdong Engineering Research Centre for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, PR China
| | - Jun Long
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Qiankun Zhang
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Wenjie Duan
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Tingle Feng
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Jiajun Huang
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Yunhui Qiu
- Department of Pathology, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China
| | - Waqas Ahmed
- Department of Neurology, Affiliated Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, PR China
| | - Hengsen Cai
- Department of Neurosurgery, The Second People's Hospital of Pingnan, Pingnan 537300, PR China
| | - Yong Hu
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hongkong 999077, PR China
| | - Yaobin Wu
- Guangdong Engineering Research Centre for Translation of Medical 3D Printing Application, Guangdong Provincial Key Laboratory of Medical Biomechanics, Department of Human Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, PR China.
| | - Lukui Chen
- Department of Neurosurgery, Neuroscience Centre, Integrated Hospital of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510310, PR China.
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Min K, Sahu A, Jeon SH, Tae G. Emerging drug delivery systems with traditional routes - A roadmap to chronic inflammatory diseases. Adv Drug Deliv Rev 2023; 203:115119. [PMID: 37898338 DOI: 10.1016/j.addr.2023.115119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 07/17/2023] [Accepted: 10/23/2023] [Indexed: 10/30/2023]
Abstract
Inflammation is prevalent and inevitable in daily life but can generally be accommodated by the immune systems. However, incapable self-healing and persistent inflammation can progress to chronic inflammation, leading to prevalent or fatal chronic diseases. This review comprehensively covers the topic of emerging drug delivery systems (DDSs) for the treatment of chronic inflammatory diseases (CIDs). First, we introduce the basic biology of the chronic inflammatory process and provide an overview of the main CIDs of the major organs. Next, up-to-date information on various DDSs and the associated strategies for ensuring targeted delivery and stimuli-responsiveness applied to CIDs are discussed extensively. The implementation of traditional routes of drug administration to maximize their therapeutic effects against CIDs is then summarized. Finally, perspectives on future DDSs against CIDs are presented.
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Affiliation(s)
- Kiyoon Min
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Abhishek Sahu
- Department of Biotechnology, National Institute of Pharmaceutical Education & Research (NIPER), Hajipur, 844102, India
| | - Sae Hyun Jeon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
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7
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Damle EB, Morrison VE, Cioma J, Volic M, Bix GJ. Co-administration of extracellular matrix-based biomaterials with neural stem cell transplantation for treatment of central nervous system injury. Front Neurosci 2023; 17:1177040. [PMID: 37255752 PMCID: PMC10225608 DOI: 10.3389/fnins.2023.1177040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 04/28/2023] [Indexed: 06/01/2023] Open
Abstract
Injuries and disorders of the central nervous system (CNS) present a particularly difficult challenge for modern medicine to address, given the complex nature of the tissues, obstacles in researching and implementing therapies, and barriers to translating efficacious treatments into human patients. Recent advancements in neural stem cell (NSC) transplantation, endogenous neurogenesis, and in vivo reprogramming of non-neural cells into the neuronal lineage represent multiple approaches to resolving CNS injury. However, we propose that one practice that must be incorporated universally in neuroregeneration studies is the use of extracellular matrix (ECM)-mimicking biomaterials to supply the architectural support and cellular microenvironment necessary for partial or complete restoration of function. Through consideration of developmental processes including neurogenesis, cellular migration, and establishment of functional connectivity, as well as evaluation of process-specific interactions between cells and ECM components, insights can be gained to harness and modulate native and induced neurobiological processes to promote CNS tissue repair. Further, evaluation of the current landscape of regenerative medicine and tissue engineering techniques external to the neurosciences provides key perspectives into the role of the ECM in the use of stem cell-based therapies, and the potential directions future neuroregenerative approaches may take. If the most successful of these approaches achieve wide-spread adoption, innovative paired NSC-ECM strategies for neuroregeneration may become prominent in the near future, and with the rapid advances these techniques are poised to herald, a new era of treatment for CNS injury may dawn.
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Affiliation(s)
- Eshan B. Damle
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
- Tulane Brain Institute, Tulane University, New Orleans, LA, United States
- Department of Cell and Molecular Biology, Tulane University, New Orleans, LA, United States
| | - Vivianne E. Morrison
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
| | - Jozef Cioma
- Faculty of Biology, Medicine, and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Milla Volic
- Faculty of Biology, Medicine, and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Gregory J. Bix
- Clinical Neuroscience Research Center, Tulane University School of Medicine, New Orleans, LA, United States
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8
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Yu W, Gong E, Liu B, Zhou L, Che C, Hu S, Zhang Z, Liu J, Shi J. Hydrogel-mediated drug delivery for treating stroke. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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9
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Advancements in Hydrogel Application for Ischemic Stroke Therapy. Gels 2022; 8:gels8120777. [PMID: 36547301 PMCID: PMC9778209 DOI: 10.3390/gels8120777] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/18/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Ischemic stroke is a major cause of death and disability worldwide. There is almost no effective treatment for this disease. Therefore, developing effective treatment for ischemic stroke is urgently needed. Efficient delivery of therapeutic drugs to ischemic sites remained a great challenge for improved treatment of strokes. In recent years, hydrogel-based strategies have been widely investigated for new and improved therapies. They have the advantage of delivering therapeutics in a controlled manner to the poststroke sites, aiming to enhance the intrinsic repair and regeneration. In this review, we discuss the pathophysiology of stroke and the development of injectable hydrogels in the application of both stroke treatment and neural tissue engineering. We also discuss the prospect and the challenges of hydrogels in the treatment of ischemic strokes.
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10
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Faria P, Pacheco C, Moura RP, Sarmento B, Martins C. Multifunctional nanomedicine strategies to manage brain diseases. Drug Deliv Transl Res 2022; 13:1322-1342. [PMID: 36344871 DOI: 10.1007/s13346-022-01256-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/30/2022] [Indexed: 11/09/2022]
Abstract
Brain diseases represent a substantial social and economic burden, currently affecting one in six individuals worldwide. Brain research has been focus of great attention in order to unravel the pathogenesis and complexity of brain diseases at the cellular, molecular, and microenvironmental levels. Due to the intrinsic nature of the brain, the presence of the highly restrictive blood-brain barrier (BBB), and the pathophysiology of most diseases, therapies can hardly be considered successful purely by the administration of one drug to a patient. Apart from improving pharmacokinetic parameters, tailoring biodistribution, and reducing the number of side effects, nanomedicines are able to actively co-target the therapeutics to the brain parenchyma and brain lesions, as well as to achieve the delivery of multiple cargos with therapeutic, diagnostic, and theranostic properties. Among other multivalent effects that can be personalized according to the disease needs, this represents a promising class of novel nanosystems, termed multifunctional nanomedicines. Herein, we review the principal mechanisms of therapeutic resistance of the most prevalent brain diseases, how to overcome this therapeutic resistance through the use of multifunctional nanomedicines that tackle multiple fronts of the disease microenvironment, and the promising therapeutic responses achieved by some of the most cutting-edge multifunctional nanomedicines reported in literature.
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11
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Yanev P, van Tilborg GA, van der Toorn A, Kong X, Stowe AM, Dijkhuizen RM. Prolonged release of VEGF and Ang1 from intralesionally implanted hydrogel promotes perilesional vascularization and functional recovery after experimental ischemic stroke. J Cereb Blood Flow Metab 2022; 42:1033-1048. [PMID: 34986707 PMCID: PMC9125493 DOI: 10.1177/0271678x211069927] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Injectable hydrogels can generate and support pro-repair environments in injured tissue. Here we used a slow-releasing drug carrying in situ-forming hydrogel to promote post-stroke recovery in a rat model. Release kinetics were measured in vitro and in vivo with MRI, using gadolinium-labeled albumin (Galbumin), which demonstrated prolonged release over multiple weeks. Subsequently, this hydrogel was used for long-term delivery of vascular endothelial growth factor (VEGF) and angiopoietin-1 (Ang1) (Gel VEGF + Ang1, n = 14), in a photothrombotically induced cortical stroke lesion in rats. Control stroke animals were intralesionally injected with saline (Saline, n = 10), non-loaded gel (Gel, n = 10), or a single bolus of VEGF + Ang1 in saline (Saline VEGF + Ang1, n = 10). MRI was executed to guide hydrogel injection. Functional recovery was assessed with sensorimotor function tests, while tissue status and vascularization were monitored by serial in vivo MRI. Significant recovery from sensorimotor deficits from day 28 onwards was only measured in the Gel VEGF + Ang1 group. This was accompanied by significantly increased vascularization in the perilesional cortex. Histology confirmed (re)vascularization and neuronal sparing in perilesional areas. In conclusion, intralesional injection of in situ-forming hydrogel loaded with pro-angiogenic factors can support prolonged brain tissue regeneration and promote functional recovery in the chronic phase post-stroke.
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Affiliation(s)
- Pavel Yanev
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Geralda Af van Tilborg
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Annette van der Toorn
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Xiangmei Kong
- Department of Neurology, University of Kentucky, Lexington, Kentucky, USA
| | - Ann M Stowe
- Department of Neurology, University of Kentucky, Lexington, Kentucky, USA
| | - Rick M Dijkhuizen
- Biomedical MR Imaging and Spectroscopy Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
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12
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Gallego I, Villate-Beitia I, Saenz-Del-Burgo L, Puras G, Pedraz JL. Therapeutic Opportunities and Delivery Strategies for Brain Revascularization in Stroke, Neurodegeneration, and Aging. Pharmacol Rev 2022; 74:439-461. [PMID: 35302047 DOI: 10.1124/pharmrev.121.000418] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 01/18/2022] [Accepted: 01/22/2022] [Indexed: 12/25/2022] Open
Abstract
Central nervous system (CNS) diseases, especially acute ischemic events and neurodegenerative disorders, constitute a public health problem with no effective treatments to allow a persistent solution. Failed therapies targeting neuronal recovery have revealed the multifactorial and intricate pathophysiology underlying such CNS disorders as ischemic stroke, Alzheimeŕs disease, amyotrophic lateral sclerosis, vascular Parkisonism, vascular dementia, and aging, in which cerebral microvasculature impairment seems to play a key role. In fact, a reduction in vessel density and cerebral blood flow occurs in these scenarios, contributing to neuronal dysfunction and leading to loss of cognitive function. In this review, we provide an overview of healthy brain microvasculature structure and function in health and the effect of the aforementioned cerebral CNS diseases. We discuss the emerging new therapeutic opportunities, and their delivery approaches, aimed at recovering brain vascularization in this context. SIGNIFICANCE STATEMENT: The lack of effective treatments, mainly focused on neuron recovery, has prompted the search of other therapies to treat cerebral central nervous system diseases. The disruption and degeneration of cerebral microvasculature has been evidenced in neurodegenerative diseases, stroke, and aging, constituting a potential target for restoring vascularization, neuronal functioning, and cognitive capacities by the development of therapeutic pro-angiogenic strategies.
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Affiliation(s)
- Idoia Gallego
- NanoBioCel Research Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P); Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine, Institute of Health Carlos III, Madrid, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.); and Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.)
| | - Ilia Villate-Beitia
- NanoBioCel Research Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P); Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine, Institute of Health Carlos III, Madrid, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.); and Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.)
| | - Laura Saenz-Del-Burgo
- NanoBioCel Research Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P); Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine, Institute of Health Carlos III, Madrid, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.); and Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.)
| | - Gustavo Puras
- NanoBioCel Research Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P); Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine, Institute of Health Carlos III, Madrid, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.); and Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.)
| | - José Luis Pedraz
- NanoBioCel Research Group, Laboratory of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, University of the Basque Country UPV/EHU, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P); Networking Research Centre of Bioengineering, Biomaterials and Nanomedicine, Institute of Health Carlos III, Madrid, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.); and Bioaraba, NanoBioCel Research Group, Vitoria-Gasteiz, Spain (I.G., I.V.-B., L.S.-B., G.P., J.L.P.)
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13
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Fakhri S, Abdian S, Zarneshan SN, Moradi SZ, Farzaei MH, Abdollahi M. Nanoparticles in Combating Neuronal Dysregulated Signaling Pathways: Recent Approaches to the Nanoformulations of Phytochemicals and Synthetic Drugs Against Neurodegenerative Diseases. Int J Nanomedicine 2022; 17:299-331. [PMID: 35095273 PMCID: PMC8791303 DOI: 10.2147/ijn.s347187] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/24/2021] [Indexed: 12/12/2022] Open
Abstract
As the worldwide average life expectancy has grown, the prevalence of age-related neurodegenerative diseases (NDDs) has risen dramatically. A progressive loss of neuronal function characterizes NDDs, usually followed by neuronal death. Inflammation, apoptosis, oxidative stress, and protein misfolding are critical dysregulated signaling pathways that mainly orchestrate neuronal damage from a mechanistic point. Furthermore, in afflicted families with genetic anomalies, mutations and multiplications of α-synuclein and amyloid-related genes produce some kinds of NDDs. Overproduction of such proteins, and their excessive aggregation, have been proven in various models of neuronal malfunction and death. In this line, providing multi-target therapies carried by novel delivery systems would pave the road to control NDDs through simultaneous modulation of such dysregulated pathways. Phytochemicals are multi-target therapeutic agents, which employ several mechanisms towards neuroprotection. Besides, the blood-brain barrier (BBB) is a critical issue in managing NDDs since it inhibits the accessibility of drugs to the brain in sufficient concentration. Besides, discovering novel delivery systems is vital to improving the efficacy, bioavailability, and pharmacokinetic of therapeutic agents. Such novel formulations are also employed to improve the drug's biodistribution, allow for the co-delivery of several medicines, and offer targeted intracellular delivery against NDDs. The present review proposes nanoformulations of phytochemicals and synthetic agents to combat NDDs by modulating neuroinflammation, neuroapoptosis, neuronal oxidative stress pathways and protein misfolding.
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Affiliation(s)
- Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sadaf Abdian
- Student Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | | | - Seyed Zachariah Moradi
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center (PSRC), The Institute of Pharmaceutical Sciences (TIPS), Tehran University of Medical Sciences, Tehran, Iran
- Department of Toxicology and Pharmacology, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
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14
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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: 33] [Impact Index Per Article: 11.0] [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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15
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Ejma M, Madetko N, Brzecka A, Alster P, Budrewicz S, Koszewicz M, Misiuk-Hojło M, Tomilova IK, Somasundaram SG, Kirkland CE, Aliev G. The Role of Stem Cells in the Therapy of Stroke. Curr Neuropharmacol 2021; 20:630-647. [PMID: 34365923 PMCID: PMC9608230 DOI: 10.2174/1570159x19666210806163352] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/19/2021] [Accepted: 06/03/2021] [Indexed: 11/22/2022] Open
Abstract
Background: Stroke is a major challenge in neurology due to its multifactorial genesis and irreversible consequences. Processes of endogenous post-stroke neurogenesis, although insufficient, may indicate possible direction of future therapy. Multiple research considers stem-cell-based approaches in order to maximize neuroregeneration and minimize post-stroke deficits. Objective: Aim of this study is to review current literature considering post-stroke stem-cell-based therapy and possibilities of inducing neuroregeneration after brain vascular damage. Methods: Papers included in this article were obtained from PubMed and MEDLINE databases. The following medical subject headings (MeSH) were used: “stem cell therapy”, “post-stroke neurogenesis”, “stem-cells stroke”, “stroke neurogenesis”, “stroke stem cells”, “stroke”, “cell therapy”, “neuroregeneration”, “neurogenesis”, “stem-cell human”, “cell therapy in human”. Ultimate inclusion was made after manual review of the obtained reference list. Results: Attempts of stimulating neuroregeneration after stroke found in current literature include supporting endogenous neurogenesis, different routes of exogenous stem cells supplying and extracellular vesicles used as a method of particle transport. Conclusion: Although further research in this field is required, post stroke brain recovery supported by exogenous stem cells seems to be promising future therapy revolutionizing modern neurology.
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Affiliation(s)
- Maria Ejma
- Department of Neurology, Wroclaw Medical University, 50-556 Wrocław, Borowska 213. Poland
| | - Natalia Madetko
- Department of Neurology, Medical University of Warsaw, Kondratowicza 8, 03-242 Warszawa. Poland
| | - Anna Brzecka
- Department of Pulmonology and Lung Oncology, Wroclaw Medical University, Grabiszynska 105, 53-439 Wroclaw. Poland
| | - Piotr Alster
- Department of Neurology, Medical University of Warsaw, Kondratowicza 8, 03-242 Warszawa. Poland
| | - Sławomir Budrewicz
- Department of Neurology, Wroclaw Medical University, 50-556 Wrocław, Borowska 213. Poland
| | - Magdalena Koszewicz
- Department of Neurology, Wroclaw Medical University, 50-556 Wrocław, Borowska 213. Poland
| | - Marta Misiuk-Hojło
- Department of Ophthalmology, Wroclaw Medical University, 50-556 Wroclaw, Borowska 213. Poland
| | - Irina K Tomilova
- Department of Biochemistry, Ivanovo State Medical Academy, Avenue Sheremetyevsky 8, Ivanovo, 153012. Russian Federation
| | - Siva G Somasundaram
- Department of Biological Sciences, Salem University, Salem, WV, 26426. United States
| | - Cecil E Kirkland
- Department of Biological Sciences, Salem University, Salem, WV, 26426. United States
| | - Gjumrakch Aliev
- Wroclaw Medical University, Department of Pulmonology and Lung Oncology, Wroclaw. Poland
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16
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Therapeutic Nanoparticles for the Different Phases of Ischemic Stroke. Life (Basel) 2021; 11:life11060482. [PMID: 34073229 PMCID: PMC8227304 DOI: 10.3390/life11060482] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/23/2021] [Accepted: 05/24/2021] [Indexed: 12/27/2022] Open
Abstract
Stroke represents the second leading cause of mortality and morbidity worldwide. Ischemic strokes are the most prevalent type of stroke, and they are characterized by a series of pathological events prompted by an arterial occlusion that leads to a heterogeneous pathophysiological response through different hemodynamic phases, namely the hyperacute, acute, subacute, and chronic phases. Stroke treatment is highly reliant on recanalization therapies, which are limited to only a subset of patients due to their narrow therapeutic window; hence, there is a huge need for new stroke treatments. Nonetheless, the vast majority of promising treatments are not effective in the clinical setting due to their inability to cross the blood-brain barrier and reach the brain. In this context, nanotechnology-based approaches such as nanoparticle drug delivery emerge as the most promising option. In this review, we will discuss the current status of nanotechnology in the setting of stroke, focusing on the diverse available nanoparticle approaches targeted to the different pathological and physiological repair mechanisms involved in each of the stroke phases.
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17
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Zheng J, Wei Z, Yang K, Lu Y, Lu P, Zhao J, Du Y, Zhang H, Li R, Lei S, Lv H, Chen X, Liu Y, Chen YM, Zhang Q, Zhang P. Neural Stem Cell-Laden Self-Healing Polysaccharide Hydrogel Transplantation Promotes Neurogenesis and Functional Recovery after Cerebral Ischemia in Rats. ACS APPLIED BIO MATERIALS 2021; 4:3046-3054. [PMID: 35014393 DOI: 10.1021/acsabm.0c00934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exploring a strategy to effectively repair cerebral ischemic injury is a critical requirement for neuroregeneration. Herein, we transplanted a neural stem cell (NSC)-laden self-healing and injectable hydrogel into the brains of ischemic rats and evaluated its therapeutic effects. We observed an improvement in neurological functions in rats transplanted with the NSC-laden hydrogel. This strategy is sufficiently efficient to support neuroregeneration evidenced by NSC proliferation, differentiation, and athletic movement recovery of rats. This therapeutic effect relates to the inhibition of the astrocyte reaction and the increased expression of vascular endothelial growth factor. This work provides a novel approach to repair cerebral ischemic injury.
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Affiliation(s)
- Juan Zheng
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Zhao Wei
- School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, P. R. China
| | - Kuan Yang
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Yang Lu
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Pan Lu
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Jingyi Zhao
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Yin Du
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Hong Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Rong Li
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Shan Lei
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
| | - Haixia Lv
- Institute of Neurobiology, National Key Academic Subject of Physiology, Xi'an Jiaotong University, Xi'an 710016, P. R. China
| | - Xinlin Chen
- Institute of Neurobiology, National Key Academic Subject of Physiology, Xi'an Jiaotong University, Xi'an 710016, P. R. China
| | - Yong Liu
- Institute of Neurobiology, National Key Academic Subject of Physiology, Xi'an Jiaotong University, Xi'an 710016, P. R. China
| | - Yong Mei Chen
- College of Bioresources Chemical and Materials Engineering, National Demonstration Center for Experimental Light Chemistry Engineering Education, Shaanxi University of Science & Technology, Xi'an 710021, P. R. China
| | - Qiqing Zhang
- Institute of Biomedical Engineering, The Second Clinical Medical College (Shenzhen People's Hospital) of Jinan University, Shenzhen 518020, P. R. China
| | - Pengbo Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, P. R. China
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18
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Understanding angiogenesis and the role of angiogenic growth factors in the vascularisation of engineered tissues. Mol Biol Rep 2021; 48:941-950. [PMID: 33393005 DOI: 10.1007/s11033-020-06108-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 12/18/2020] [Indexed: 12/20/2022]
Abstract
Tissue engineering is a rapidly developing field with many potential clinical applications in tissue and organ regeneration. The development of a mature and stable vasculature within these engineered tissues (ET) remains a significant obstacle. Currently, several growth factors (GFs) have been identified to play key roles within in vivo angiogenesis, including vascular endothelial growth factor (VEGF), platelet derived growth factor (PDGF), FGF and angiopoietins. In this article we attempt to build on in vivo principles to review the single, dual and multiple GF release systems and their effects on promoting angiogenesis. We conclude that multiple GF release systems offer superior results compared to single and dual systems with more stable, mature and larger vessels produced. However, with more complex release systems this raises other problems such as increased cost and significant GF-GF interactions. Upstream regulators and pericyte-coated scaffolds could provide viable alternative to circumnavigate these issues.
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19
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Shen S, Zhang Y, Zhang S, Wang B, Shang L, Shao J, Lin M, Cui Y, Sun S, Ge S. 6-Bromoindirubin-3'-oxime Promotes Osteogenic Differentiation of Periodontal Ligament Stem Cells and Facilitates Bone Regeneration in a Mouse Periodontitis Model. ACS Biomater Sci Eng 2020; 7:232-241. [PMID: 33320531 DOI: 10.1021/acsbiomaterials.0c01078] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Effective bone tissue engineering is important to overcome the unmet clinical challenges of periodontal tissue regeneration. Successful bone tissue engineering comprises three key factors: stem cells, growth factors, and scaffolds. 6-Bromoindirubin-3'-oxime (BIO) is an inhibitor of glycogen synthase kinase-3 (GSK-3) that can activate the Wnt signaling pathway by enhancing β-catenin activity. In this study, the effects of BIO on the proliferation, migration, and osteogenic differentiation of periodontal ligament stem cells (PDLSCs) were investigated. Poly(lactic-co-glycolic acid) (PLGA) and hyaluronic acid (HA) emerged as promising biomaterials; thus, we developed a novel HA hydrogel embedded with BIO-encapsulated PLGA microspheres and injected the formulation into the gingival sulcus of mice with experimental periodontitis. The release speed of this system was fast in the first week and followed a sustained release phase until week 4. In vivo experiments showed that this PLGA-BIO-HA hydrogel system can inhibit periodontal inflammation, promote bone regeneration, and induce the expression of bone-forming markers alkaline phosphatase (ALP), runt-related transcription factor 2 (Runx2), and osteocalcin (OCN) in a mouse periodontitis model. Therefore, this PLGA-BIO-HA hydrogel system provides a promising therapeutic strategy for periodontal bone regeneration.
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Affiliation(s)
- Song Shen
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Yilin Zhang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021 Jinan, Shandong, China
| | - Songmei Zhang
- Eastman Institute for Oral Health, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, 14642 New York, United States
| | - Bing Wang
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Lingling Shang
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Jinlong Shao
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Meng Lin
- School of Chemistry and Chemical Engineering, Shandong University, 250012 Jinan, Shandong, China
| | - Yating Cui
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Shengjun Sun
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
| | - Shaohua Ge
- Department of Periodontology & Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Shandong University, 250012 Jinan, Shandong, China
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20
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Lacalle-Aurioles M, Cassel de Camps C, Zorca CE, Beitel LK, Durcan TM. Applying hiPSCs and Biomaterials Towards an Understanding and Treatment of Traumatic Brain Injury. Front Cell Neurosci 2020; 14:594304. [PMID: 33281561 PMCID: PMC7689345 DOI: 10.3389/fncel.2020.594304] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Accepted: 10/19/2020] [Indexed: 12/12/2022] Open
Abstract
Traumatic brain injury (TBI) is the leading cause of disability and mortality in children and young adults and has a profound impact on the socio-economic wellbeing of patients and their families. Initially, brain damage is caused by mechanical stress-induced axonal injury and vascular dysfunction, which can include hemorrhage, blood-brain barrier disruption, and ischemia. Subsequent neuronal degeneration, chronic inflammation, demyelination, oxidative stress, and the spread of excitotoxicity can further aggravate disease pathology. Thus, TBI treatment requires prompt intervention to protect against neuronal and vascular degeneration. Rapid advances in the field of stem cells (SCs) have revolutionized the prospect of repairing brain function following TBI. However, more than that, SCs can contribute substantially to our knowledge of this multifaced pathology. Research, based on human induced pluripotent SCs (hiPSCs) can help decode the molecular pathways of degeneration and recovery of neuronal and glial function, which makes these cells valuable tools for drug screening. Additionally, experimental approaches that include hiPSC-derived engineered tissues (brain organoids and bio-printed constructs) and biomaterials represent a step forward for the field of regenerative medicine since they provide a more suitable microenvironment that enhances cell survival and grafting success. In this review, we highlight the important role of hiPSCs in better understanding the molecular pathways of TBI-related pathology and in developing novel therapeutic approaches, building on where we are at present. We summarize some of the most relevant findings for regenerative therapies using biomaterials and outline key challenges for TBI treatments that remain to be addressed.
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Affiliation(s)
- María Lacalle-Aurioles
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Camille Cassel de Camps
- Department of Biological and Biomedical Engineering, McGill University, Montreal, QC, Canada
| | - Cornelia E Zorca
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Lenore K Beitel
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
| | - Thomas M Durcan
- Early Drug Discovery Unit, Montreal Neurological Institute-Hospital, McGill University, Montreal, QC, Canada
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Rey F, Barzaghini B, Nardini A, Bordoni M, Zuccotti GV, Cereda C, Raimondi MT, Carelli S. Advances in Tissue Engineering and Innovative Fabrication Techniques for 3-D-Structures: Translational Applications in Neurodegenerative Diseases. Cells 2020; 9:cells9071636. [PMID: 32646008 PMCID: PMC7407518 DOI: 10.3390/cells9071636] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 12/11/2022] Open
Abstract
In the field of regenerative medicine applied to neurodegenerative diseases, one of the most important challenges is the obtainment of innovative scaffolds aimed at improving the development of new frontiers in stem-cell therapy. In recent years, additive manufacturing techniques have gained more and more relevance proving the great potential of the fabrication of precision 3-D scaffolds. In this review, recent advances in additive manufacturing techniques are presented and discussed, with an overview on stimulus-triggered approaches, such as 3-D Printing and laser-based techniques, and deposition-based approaches. Innovative 3-D bioprinting techniques, which allow the production of cell/molecule-laden scaffolds, are becoming a promising frontier in disease modelling and therapy. In this context, the specific biomaterial, stiffness, precise geometrical patterns, and structural properties are to be considered of great relevance for their subsequent translational applications. Moreover, this work reports numerous recent advances in neural diseases modelling and specifically focuses on pre-clinical and clinical translation for scaffolding technology in multiple neurodegenerative diseases.
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Affiliation(s)
- Federica Rey
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
| | - Bianca Barzaghini
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
| | - Alessandra Nardini
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
| | - Matteo Bordoni
- Dipartimento di Scienze Farmacologiche e Biomolecolari (DiSFeB), Centro di Eccellenza sulle Malattie Neurodegenerative, Università degli Studi di Milano, Via Balzaretti 9, 20133 Milano, Italy;
| | - Gian Vincenzo Zuccotti
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
| | - Cristina Cereda
- Genomic and post-Genomic Center, IRCCS Mondino Foundation, Via Mondino 2, 27100 Pavia, Italy;
| | - Manuela Teresa Raimondi
- Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy; (B.B.); (A.N.)
- Correspondence: (M.T.R.); (S.C.); Tel.: +390-223-994-306 (M.T.R.); +390-250-319-825 (S.C.)
| | - Stephana Carelli
- Department of Biomedical and Clinical Sciences “L. Sacco”, University of Milan, Via Grassi 74, 20157 Milan, Italy; (F.R.); (G.V.Z.)
- Pediatric Clinical Research Center Fondazione “Romeo ed Enrica Invernizzi”, University of Milano, Via Grassi 74, 20157 Milano, Italy
- Correspondence: (M.T.R.); (S.C.); Tel.: +390-223-994-306 (M.T.R.); +390-250-319-825 (S.C.)
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Abstract
Stroke is the leading cause of long-term disability with no current treatment addressing post-stroke disability. The complex pathophysiology of stroke and the brain's limited potential for regeneration prevents sufficient endogenous repair for complete recovery. While engineered materials provide an exciting opportunity to augment endogenous repair in conjunction with other therapies that address post-stroke disability, much of the preclinical work in this arena is still in its infancy. Biomaterials can be used to enhance drug- or stem cell-sustained and targeted delivery. Moreover, materials can act as extracellular matrix-mimics and augment a pro-repair environment by addressing astrogliosis, inflammation, neurogenesis, axonal sprouting, and angiogenesis. Lastly, there is a growing need to elucidate stroke repair mechanisms to identify novel targets to inform material design for brain repair after stroke.
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Affiliation(s)
- Kevin Erning
- Duke University Biomedical Engineering Department, 101 Science Drive, CIEMAS, NC 27707
| | - Tatiana Segura
- Duke University Biomedical Engineering Department, 101 Science Drive, CIEMAS, NC 27707
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23
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Esteban-Garcia N, Nombela C, Garrosa J, Rascón-Ramirez FJ, Barcia JA, Sánchez-Sánchez-Rojas L. Neurorestoration Approach by Biomaterials in Ischemic Stroke. Front Neurosci 2020; 14:431. [PMID: 32477053 PMCID: PMC7235425 DOI: 10.3389/fnins.2020.00431] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/08/2020] [Indexed: 12/11/2022] Open
Abstract
Ischemic stroke (IS) is the leading cause of disability in the western world, assuming a high socio-economic cost. One of the most used strategies in the last decade has been biomaterials, which have been initially used with a structural support function. They have been perfected, different compounds have been combined, and they have been used together with cell therapy or controlled release chemical compounds. This double function has driven them as potential candidates for the chronic treatment of IS. In fact, the most developed are in different phases of clinical trial. In this review, we will show the ischemic scenario and address the most important criteria to achieve a successful neuroreparation from the point of view of biomaterials. The spontaneous processes that are activated and how to enhance them is one of the keys that contribute to the success of the therapeutic approach. In addition, the different routes of administration and how they affect the design of biomaterials are analyzed. Future perspectives show where this broad scientific field is heading, which advances every day with the help of technology and advanced therapies.
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Affiliation(s)
- Noelia Esteban-Garcia
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
| | - Cristina Nombela
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain.,Department of Biological and Health Psychology, Universidad Autónoma de Madrid, Madrid, Spain
| | - Javier Garrosa
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
| | | | - Juan Antonio Barcia
- Neurosurgery Department, Clínico San Carlos Hospital, Madrid, Spain.,Chair of Neurosurgery Department, Clínico San Carlos Hospital, Madrid, Spain
| | - Leyre Sánchez-Sánchez-Rojas
- Regenerative Medicine and Advanced Therapies Lab, Instituto de Investigación Sanitaria San Carlos, Clínico San Carlos Hospital, Madrid, Spain
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24
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Therapeutic potential of stem cells for treatment of neurodegenerative diseases. Biotechnol Lett 2020; 42:1073-1101. [DOI: 10.1007/s10529-020-02886-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 04/05/2020] [Indexed: 12/13/2022]
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25
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González-Nieto D, Fernández-Serra R, Pérez-Rigueiro J, Panetsos F, Martinez-Murillo R, Guinea GV. Biomaterials to Neuroprotect the Stroke Brain: A Large Opportunity for Narrow Time Windows. Cells 2020; 9:E1074. [PMID: 32357544 PMCID: PMC7291200 DOI: 10.3390/cells9051074] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 12/14/2022] Open
Abstract
Ischemic stroke represents one of the most prevalent pathologies in humans and is a leading cause of death and disability. Anti-thrombolytic therapy with tissue plasminogen activator (t-PA) and surgical thrombectomy are the primary treatments to recanalize occluded vessels and normalize the blood flow in ischemic and peri-ischemic regions. A large majority of stroke patients are refractory to treatment or are not eligible due to the narrow time window of therapeutic efficacy. In recent decades, we have significantly increased our knowledge of the molecular and cellular mechanisms that inexorably lead to progressive damage in infarcted and peri-lesional brain areas. As a result, promising neuroprotective targets have been identified and exploited in several stroke models. However, these considerable advances have been unsuccessful in clinical contexts. This lack of clinical translatability and the emerging use of biomaterials in different biomedical disciplines have contributed to developing a new class of biomaterial-based systems for the better control of drug delivery in cerebral disorders. These systems are based on specific polymer formulations structured in nanoparticles and hydrogels that can be administered through different routes and, in general, bring the concentrations of drugs to therapeutic levels for prolonged times. In this review, we first provide the general context of the molecular and cellular mechanisms impaired by cerebral ischemia, highlighting the role of excitotoxicity, inflammation, oxidative stress, and depolarization waves as the main pathways and targets to promote neuroprotection avoiding neuronal dysfunction. In the second part, we discuss the versatile role played by distinct biomaterials and formats to support the sustained administration of particular compounds to neuroprotect the cerebral tissue at risk of damage.
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Affiliation(s)
- Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
| | - Rocío Fernández-Serra
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain;
- Brain Plasticity Group, Health Research Institute of the Hospital Clínico San Carlos (IdISSC), 28040 Madrid, Spain
| | | | - Gustavo V. Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain; (R.F.-S.); (J.P.-R.); (G.V.G.)
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28029 Madrid, Spain
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid, 28040 Madrid, Spain
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Shahi M, Mohammadnejad D, Karimipour M, Rasta SH, Rahbarghazi R, Abedelahi A. Hyaluronic Acid and Regenerative Medicine: New Insights into the Stroke Therapy. Curr Mol Med 2020; 20:675-691. [PMID: 32213158 DOI: 10.2174/1566524020666200326095837] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 03/02/2020] [Accepted: 03/03/2020] [Indexed: 11/22/2022]
Abstract
Stroke is known as one of the very important public health problems that are related to societal burden and tremendous economic losses. It has been shown that there are few therapeutic approaches for the treatment of this disease. In this regard, the present therapeutic platforms aim to obtain neuroprotection, reperfusion, and neuro recovery. Among these therapies, regenerative medicine-based therapies have appeared as new ways of stroke therapy. Hyaluronic acid (HA) is a new candidate, which could be applied as a regenerative medicine-based therapy in the treatment of stroke. HA is a glycosaminoglycan composed of disaccharide repeating elements (N-acetyl-Dglucosamine and D-glucuronic acid). Multiple lines of evidence demonstrated that HA has critical roles in normal tissues. It can be a key player in different physiological and pathophysiological conditions such as water homeostasis, multiple drug resistance, inflammatory processes, tumorigenesis, angiogenesis, and changed viscoelasticity of the extracellular matrix. HA has very important physicochemical properties i.e., availability of reactive functional groups and its solubility, which make it a biocompatible material for application in regenerative medicine. Given that HAbased bioscaffolds and biomaterials do not induce inflammation or allergies and are hydrophilic, they are used as soft tissue fillers and injectable dermal fillers. Several studies indicated that HA could be employed as a new therapeutic candidate in the treatment of stroke. These studies documented that HA and HA-based therapies exert their pharmacological effects via affecting stroke-related processes. Herein, we summarized the role of the extracellular matrix in stroke pathogenesis. Moreover, we highlighted the HA-based therapies for the treatment of stroke.
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Affiliation(s)
- Maryam Shahi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Daruosh Mohammadnejad
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Karimipour
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Seyed Hossein Rasta
- Department of Medical Bioengineering, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Reza Rahbarghazi
- Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Abedelahi
- Department of Anatomical Sciences, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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27
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Injectable hydrogel enables local and sustained co-delivery to the brain: Two clinically approved biomolecules, cyclosporine and erythropoietin, accelerate functional recovery in rat model of stroke. Biomaterials 2020; 235:119794. [DOI: 10.1016/j.biomaterials.2020.119794] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 01/06/2020] [Accepted: 01/15/2020] [Indexed: 12/20/2022]
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28
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McCrary MR, Jesson K, Wei ZZ, Logun M, Lenear C, Tan S, Gu X, Jiang MQ, Karumbaiah L, Ping Yu S, Wei L. Cortical Transplantation of Brain-Mimetic Glycosaminoglycan Scaffolds and Neural Progenitor Cells Promotes Vascular Regeneration and Functional Recovery after Ischemic Stroke in Mice. Adv Healthc Mater 2020; 9:e1900285. [PMID: 31977165 PMCID: PMC7358896 DOI: 10.1002/adhm.201900285] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 01/08/2020] [Indexed: 12/14/2022]
Abstract
Stroke causes significant mortality and morbidity. Currently, there are no treatments which can regenerate brain tissue lost to infarction. Neural progenitor cells (NPCs) are at the forefront of preclinical studies for regenerative stroke therapies. NPCs can differentiate into and replace neurons and promote endogenous recovery mechanisms such as angiogenesis via trophic factor production and release. The stroke core is hypothetically the ideal location for replacement of neural tissue since it is in situ and develops into a potential space where injections may be targeted with minimal compression of healthy peri-infarct tissue. However, the compromised perfusion and tissue degradation following ischemia create an inhospitable environment resistant to cellular therapy. Overcoming these limitations is critical to advancing cellular therapy. In this work, the therapeutic potential of mouse-induced pluripotent stem cell derived NPCs is tested encapsulated in a basic fibroblast growth factor (bFGF) binding chondroitin sulfate-A (CS-A) hydrogel transplanted into the infarct core in a mouse sensorimotor cortex mini-stroke model. It is shown that CS-A encapsulation significantly improves vascular remodeling, cortical blood flow, and sensorimotor behavioral outcomes after stroke. It is found these improvements are negated by blocking bFGF, suggesting that the sustained trophic signaling endowed by the CS-A hydrogel combined with NPC transplantation can promote tissue repair.
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Affiliation(s)
- Myles R. McCrary
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Kaleena Jesson
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Zheng Z. Wei
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Meghan Logun
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia, USA
| | - Christopher Lenear
- Regenerative Bioscience Center, University of Georgia, Athens, Georgia, USA
| | - Stephen Tan
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Xiaohuan Gu
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | - Michael Q. Jiang
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
| | | | - Shan Ping Yu
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
- Center for Visual and Neurocognitive Rehabilitation, Atlanta VA Medical Center, Decatur, GA 30033, USA
| | - Ling Wei
- Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia 30322, USA
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29
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Drobnik J, Pietrucha K, Janczar K, Polis L, Polis B, Safandowska M, Szymański J. Intra-cerebral implantation of a variety of collagenous scaffolds with nervous embryonic cells. Exp Ther Med 2019; 18:4758-4764. [PMID: 31772645 PMCID: PMC6862020 DOI: 10.3892/etm.2019.8116] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 08/27/2019] [Indexed: 12/28/2022] Open
Abstract
Collagenous scaffolds provide good conditions for embryonic nerve cell growth. The aim of the current study was to assess the brains reaction to the implantation of 3D sponge-shaped scaffolds. These scaffolds consisted of collagen (Col) and Col with chondroitin sulphate, which is modified by carbodiimide, or Col crosslinked with dialdehyde cellulose. The current study also evaluated the expression of integrins α2 and β1 in embryonic nerve cells. Embryonic nerve cells were isolated from the brains of rat embryos. Acellular scaffolds, or scaffolds populated with embryonic nerve cells, were implanted into the rats brain. The fibers of all the implanted scaffolds remained intact and served as a template for cell infiltration. The implants induced minimal to moderate inflammatory responses and minimal glial scar formations. Immunohistochemical studies did not indicate any microtubule-associated protein 2 or glial fibrillary acidic protein-positive cells inside the scaffolds. Acellular and cell-populated scaffolds yielded similar responses in the brain. The expression of integrin α2 and β1 was observed in embryonic nervous cells. TC-I15, the integrin α2β1 inhibitor, was not demonstrated to modify cell entrapment within the collagenous scaffolds. All applied scaffolds were well tolerated by the tissue and were indicated to support blood vessel formation. Therefore, all tested biomaterials are recommended for further studies. Additional chemical modifications of the material are suggested to protect the seeded cells from apoptosis after implantation into the brain.
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Affiliation(s)
- Jacek Drobnik
- Laboratory of Connective Tissue Metabolism, Department of Pathophysiology, Medical University of Lodz, 90-136 Lodz, Poland
| | - Krystyna Pietrucha
- Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, 90-924 Lodz, Poland
| | - Karolina Janczar
- Department of Pathomorphology, Medical University of Lodz, 92-213 Lodz, Poland
| | - Lech Polis
- Department of Neurosurgery, Polish Mothers' Memorial Hospital-Research Institute, 93-338 Lodz, Poland
| | - Bartosz Polis
- Department of Neurosurgery, Polish Mothers' Memorial Hospital-Research Institute, 93-338 Lodz, Poland
| | - Marta Safandowska
- Department of Material and Commodity Sciences and Textile Metrology, Lodz University of Technology, 90-924 Lodz, Poland
| | - Jacek Szymański
- Central Scientific Laboratory, Medical University of Lodz, 92-215 Lodz, Poland
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30
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Houlton J, Abumaria N, Hinkley SFR, Clarkson AN. Therapeutic Potential of Neurotrophins for Repair After Brain Injury: A Helping Hand From Biomaterials. Front Neurosci 2019; 13:790. [PMID: 31427916 PMCID: PMC6688532 DOI: 10.3389/fnins.2019.00790] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 07/15/2019] [Indexed: 12/17/2022] Open
Abstract
Stroke remains the leading cause of long-term disability with limited options available to aid in recovery. Significant effort has been made to try and minimize neuronal damage following stroke with use of neuroprotective agents, however, these treatments have yet to show clinical efficacy. Regenerative interventions have since become of huge interest as they provide the potential to restore damaged neural tissue without being limited by a narrow therapeutic window. Neurotrophins, such as brain-derived neurotrophic factor (BDNF), and their high affinity receptors are actively produced throughout the brain and are involved in regulating neuronal activity and normal day-to-day function. Furthermore, neurotrophins are known to play a significant role in both protection and recovery of function following neurodegenerative diseases such as stroke and traumatic brain injury (TBI). Unfortunately, exogenous administration of these neurotrophins is limited by a lack of blood-brain-barrier (BBB) permeability, poor half-life, and rapid degradation. Therefore, we have focused this review on approaches that provide a direct and sustained neurotrophic support using pharmacological therapies and mimetics, physical activity, and potential drug delivery systems, including discussion around advantages and limitations for use of each of these systems. Finally, we discuss future directions of biomaterial drug-delivery systems, including the incorporation of heparan sulfate (HS) in conjunction with neurotrophin-based interventions.
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Affiliation(s)
- Josh Houlton
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
| | - Nashat Abumaria
- State Key Laboratory of Medical Neurobiology, MOE Frontiers Center for Brain Science, Institute of Brain Science, Fudan University, Shanghai, China
- Department of Laboratory Animal Science, Shanghai Medical College, Fudan University, Shanghai, China
| | - Simon F. R. Hinkley
- The Ferrier Research Institute, Victoria University of Wellington, Petone, New Zealand
| | - Andrew N. Clarkson
- Brain Health Research Centre, Department of Anatomy, University of Otago, Dunedin, New Zealand
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31
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Dehqan Niri A, Karimi Zarchi AA, Ghadiri Harati P, Salimi A, Mujokoro B. Tissue engineering scaffolds in the treatment of brain disorders in geriatric patients. Artif Organs 2019; 43:947-960. [DOI: 10.1111/aor.13485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/26/2019] [Accepted: 04/29/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Alireza Dehqan Niri
- Nanobiotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran
| | | | - Parisa Ghadiri Harati
- Department of Physiotherapy, School of Rehabilitation Shahid Beheshti University of Medical Sciences Tehran Iran
| | - Ali Salimi
- Nanobiotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran
| | - Basil Mujokoro
- Department of Medical Nanotechnology, School of Advanced Technologies in Medicine Tehran University of Medical Sciences Tehran Iran
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32
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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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33
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Sanchez-Rojas L, Gómez-Pinedo U, Benito-Martin MS, León-Espinosa G, Rascón-Ramirez F, Lendinez C, Martínez-Ramos C, Matías-Guiu J, Pradas MM, Barcia JA. Biohybrids of scaffolding hyaluronic acid biomaterials plus adipose stem cells home local neural stem and endothelial cells: Implications for reconstruction of brain lesions after stroke. J Biomed Mater Res B Appl Biomater 2018; 107:1598-1606. [PMID: 30307108 DOI: 10.1002/jbm.b.34252] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/23/2018] [Accepted: 09/08/2018] [Indexed: 12/25/2022]
Abstract
Endogenous neurogenesis in stroke is insufficient to replace the lost brain tissue, largely due to the lack of a proper biological structure to let new cells dwell in the damaged area. We hypothesized that scaffolds made of hyaluronic acid (HA) biomaterials (BM) could provide a suitable environment to home not only new neurons, but also vessels, glia and neurofilaments. Further, the addition of exogenous cells, such as adipose stem cells (ASC) could increase this effect. Athymic mice were randomly assigned to a one of four group: stroke alone, stroke and implantation of BM, stroke and implantation of BM with ASC, and sham operated animals. Stroke model consisted of middle cerebral artery thrombosis with FeCl3 . After 30 days, animals underwent magnetic resonance imaging (MRI) and were sacrificed. Proliferation and neurogenesis increased at the subventricular zone ipsilateral to the ventricle and neuroblasts, glial, and endothelial cells forming capillaries were seen inside the BM. Those effects increased when ASC were added, while there was less inflammatory reaction. Three-dimensional scaffolds made of HA are able to home newly formed neurons, glia, and endothelial cells permitting the growth neurofilaments inside them. The addition of ASC increase these effects and decrease the inflammatory reaction to the implant. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1598-1606, 2019.
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Affiliation(s)
- Leyre Sanchez-Rojas
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Ulises Gómez-Pinedo
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - María Soledad Benito-Martin
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Gonzalo León-Espinosa
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain.,Instituto Cajal, CSIC; Laboratorio Cajal de Circuitos Corticales (CTB), Universidad Politécnica de Madrid; Facultad de Farmacia, Universidad San Pablo CEU, Madrid, Spain
| | - Fernando Rascón-Ramirez
- Servicio de Neurocirugía, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - Cristina Lendinez
- Laboratorio de Medicina Regenerativa, Instituto de Neurociencias, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Madrid, Spain
| | - Cristina Martínez-Ramos
- Center for Biomaterials and Tissue Engineering, Universitat Politécnica de Valencia, C. de Vera s/n, Valencia, Spain
| | - Jorge Matías-Guiu
- Servicio de Neurología. Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
| | - Manuel Monleón Pradas
- Center for Biomaterials and Tissue Engineering, Universitat Politécnica de Valencia, C. de Vera s/n, Valencia, Spain.,Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, Valencia, Spain
| | - Juan A Barcia
- Servicio de Neurocirugía, Instituto de Investigación Sanitaria San Carlos (IdISSC), Hospital Clínico San Carlos, Universidad Complutense de Madrid, Madrid, Spain
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Rajkovic O, Potjewyd G, Pinteaux E. Regenerative Medicine Therapies for Targeting Neuroinflammation After Stroke. Front Neurol 2018; 9:734. [PMID: 30233484 PMCID: PMC6129611 DOI: 10.3389/fneur.2018.00734] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/13/2018] [Indexed: 12/15/2022] Open
Abstract
Inflammation is a major pathological event following ischemic stroke that contributes to secondary brain tissue damage leading to poor functional recovery. Following the initial ischemic insult, post-stroke inflammatory damage is driven by initiation of a central and peripheral innate immune response and disruption of the blood-brain barrier (BBB), both of which are triggered by the release of pro-inflammatory cytokines and infiltration of circulating immune cells. Stroke therapies are limited to early cerebral blood flow reperfusion, and whilst current strategies aim at targeting neurodegeneration and/or neuroinflammation, innovative research in the field of regenerative medicine aims at developing effective treatments that target both the acute and chronic phase of inflammation. Anti-inflammatory regenerative strategies include the use of nanoparticles and hydrogels, proposed as therapeutic agents and as a delivery vehicle for encapsulated therapeutic biological factors, anti-inflammatory drugs, stem cells, and gene therapies. Biomaterial strategies-through nanoparticles and hydrogels-enable the administration of treatments that can more effectively cross the BBB when injected systemically, can be injected directly into the brain, and can be 3D-bioprinted to create bespoke implants within the site of ischemic injury. In this review, these emerging regenerative and anti-inflammatory approaches will be discussed in relation to ischemic stroke, with a perspective on the future of stroke therapies.
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Affiliation(s)
- Olivera Rajkovic
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Geoffrey Potjewyd
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Emmanuel Pinteaux
- Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
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Hydrogel Scaffolds: Towards Restitution of Ischemic Stroke-Injured Brain. Transl Stroke Res 2018; 10:1-18. [DOI: 10.1007/s12975-018-0655-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/17/2018] [Accepted: 08/19/2018] [Indexed: 12/27/2022]
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Basuodan R, Basu AP, Clowry GJ. Human neural stem cells dispersed in artificial ECM form cerebral organoids when grafted in vivo. J Anat 2018; 233:155-166. [PMID: 29745426 DOI: 10.1111/joa.12827] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/18/2018] [Indexed: 12/11/2022] Open
Abstract
Human neural stem cells (hNSC) derived from induced pluripotent stem cells can be differentiated into neurons that could be used for transplantation to repair brain injury. In this study we dispersed such hNSC in a three-dimensional artificial extracellular matrix (aECM) and compared their differentiation in vitro and following grafting into the sensorimotor cortex (SMC) of postnatal day (P)14 rat pups lesioned by localised injection of endothelin-1 at P12. After 10-43 days of in vitro differentiation, a few cells remained as PAX6+ neuroprogenitors but many more resembled post-mitotic neurons expressing doublecortin, β-tubulin and MAP2. These cells remained dispersed throughout the ECM, but with extended long processes for over 50 μm. In vivo, by 1 month post grafting, cells expressing human specific markers instead organised into cerebral organoids: columns of tightly packed PAX6 co-expressing progenitor cells arranged around small tubular lumen in rosettes, with a looser network of cells with processes around the outside co-expressing markers of immature neurons including doublecortin, and CTIP2 characteristic of corticofugal neurons. Host cells also invaded the graft including microglia, astrocytes and endothelial cells forming blood vessels. By 10 weeks post-grafting, the organoids had disappeared and the aECM had started to break down with fewer transplanted cells remaining. In vitro, cerebral organoids form in rotating incubators that force oxygen and nutrients to the centre of the structures. We have shown that cerebral organoids can form in vivo; intrinsic factors may direct their organisation including infiltration by host blood vessels.
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Affiliation(s)
- Reem Basuodan
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.,Health and Rehabilitation Sciences, Princess Noura bint Abdulrhman University, Riyadh, Saudi Arabia
| | - Anna P Basu
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin J Clowry
- Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
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Deezagi A, Shomali S. Prostaglandin F-2α Stimulates The Secretion of Vascular Endothelial Growth Factor and Induces Cell Proliferation and Migration of Adipose Tissue Derived Mesenchymal Stem Cells. CELL JOURNAL 2018; 20:259-266. [PMID: 29633604 PMCID: PMC5893298 DOI: 10.22074/cellj.2018.5026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/26/2017] [Indexed: 11/04/2022]
Abstract
Objective Tissue engineering today uses factors that can induce differentiation of mesenchymal stem cells
(MSCs) into other cell types. However, the problem of angiogenesis in this differentiated tissue remains an
unresolved area of research interest. The aim of this study was to investigate the effects of prostaglandin F-2α
(PGF-2α) on the expression of vascular endothelial growth factor (VEGF) in human adipose tissue derived MSCs.
Materials and Methods In this experimental research, human adipose tissue was digested using collagenase.
The isolated MSCs cells were treated with PGF-2α (up to 5 μg/ml) and incubated for 96 hours. Cell proliferation,
secretion of VEGF and cell migration were spontaneously assayed by MTT, BrdU, ELISA, RT-PCR and scratching
methods.
Results Cell growth at 1.0, 2.5, 5 µg/ml of PGF-2α was not significantly reduced compared to control cells,
suggesting that these concentrations of PGF-2α are not toxic to cell growth. The results of the BrdU incorporation
assay indicated that, in comparison to untreated cells, BrdU incorporation was respectively 1.08, 1.96, 2.0 and
1.8 fold among cells treated with 0.1, 1.0, 2.5 and 5.0 µg/ml of PGF-2α. The scratching test also demonstrated a
positive influence on cell proliferation and migration. Cells treated with 1.0 µg/ml of PGF-2α for 12 hours showed
the highest relative migration and coverage in comparison to untreated cells. Quantitative VEGF ELISA and RT-
PCR results indicated an increase in VEGF expression and secretion in the presence of PGF-2α. The amount of
VEGF produced in response to 0.1, 1.0, 2.5 and 5.0 µg/ml of PGF-2α was 62.4 ± 3.2 , 66.3 ± 3.7, 53.1 ± 2.6
and 49.0 ± 2.3 pg/ml, respectively, compared to the 35.2 ± 2.1 pg/ml produced by untreated cells.
Conclusion Stimulation of VEGF secretion by PGF-2α treated MSCs could be useful for the induction of angiogenesis
in tissue engineering in vitro.
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Affiliation(s)
- Abdolkhaleg Deezagi
- Department of Molecular Medicine and Biochemistry, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran.
| | - Samira Shomali
- Department of Molecular Medicine and Biochemistry, National Institute of Genetic Engineering and Biotechnology, Tehran, Iran
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Biomaterial Scaffolds in Regenerative Therapy of the Central Nervous System. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7848901. [PMID: 29805977 PMCID: PMC5899851 DOI: 10.1155/2018/7848901] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/18/2018] [Accepted: 02/21/2018] [Indexed: 02/08/2023]
Abstract
The central nervous system (CNS) is the most important section of the nervous system as it regulates the function of various organs. Injury to the CNS causes impairment of neurological functions in corresponding sites and further leads to long-term patient disability. CNS regeneration is difficult because of its poor response to treatment and, to date, no effective therapies have been found to rectify CNS injuries. Biomaterial scaffolds have been applied with promising results in regeneration medicine. They also show great potential in CNS regeneration for tissue repair and functional recovery. Biomaterial scaffolds are applied in CNS regeneration predominantly as hydrogels and biodegradable scaffolds. They can act as cellular supportive scaffolds to facilitate cell infiltration and proliferation. They can also be combined with cell therapy to repair CNS injury. This review discusses the categories and progression of the biomaterial scaffolds that are applied in CNS regeneration.
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Tang JD, Lampe KJ. From de novo peptides to native proteins: advancements in biomaterial scaffolds for acute ischemic stroke repair. Biomed Mater 2018; 13:034103. [DOI: 10.1088/1748-605x/aaa4c3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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González-Nieto D, Fernández-García L, Pérez-Rigueiro J, Guinea GV, Panetsos F. Hydrogels-Assisted Cell Engraftment for Repairing the Stroke-Damaged Brain: Chimera or Reality. Polymers (Basel) 2018; 10:polym10020184. [PMID: 30966220 PMCID: PMC6415003 DOI: 10.3390/polym10020184] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 02/06/2018] [Accepted: 02/11/2018] [Indexed: 01/07/2023] Open
Abstract
The use of advanced biomaterials as a structural and functional support for stem cells-based therapeutic implants has boosted the development of tissue engineering applications in multiple clinical fields. In relation to neurological disorders, we are still far from the clinical reality of restoring normal brain function in neurodegenerative diseases and cerebrovascular disorders. Hydrogel polymers show unique mechanical stiffness properties in the range of living soft tissues such as nervous tissue. Furthermore, the use of these polymers drastically enhances the engraftment of stem cells as well as their capacity to produce and deliver neuroprotective and neuroregenerative factors in the host tissue. Along this article, we review past and current trends in experimental and translational research to understand the opportunities, benefits, and types of tentative hydrogel-based applications for the treatment of cerebral disorders. Although the use of hydrogels for brain disorders has been restricted to the experimental area, the current level of knowledge anticipates an intense development of this field to reach clinics in forthcoming years.
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Affiliation(s)
- Daniel González-Nieto
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Departamento de Tecnología Fotónica y Bioingeniería, ETSI Telecomunicaciones, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
| | - Laura Fernández-García
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
| | - José Pérez-Rigueiro
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Gustavo V Guinea
- Center for Biomedical Technology, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
- Biomedical Research Networking Center in Bioengineering Biomaterials and Nanomedicine (CIBER-BBN), 28040 Madrid, Spain.
- Departamento de Ciencia de Materiales, ETSI Caminos, Canales y Puertos, Universidad Politécnica de Madrid 28040 Madrid, Spain.
| | - Fivos Panetsos
- Neurocomputing and Neurorobotics Research Group: Faculty of Biology and Faculty of Optics, Universidad Complutense de Madrid, 28040 Madrid, Spain.
- Instituto de Investigación Sanitaria, Hospital Clínico San Carlos Madrid, IdISSC, 28040 Madrid, Spain.
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Singh S, Srivastava A, Srivastava P, Dhuriya YK, Pandey A, Kumar D, Rajpurohit CS. Advances in Stem Cell Research- A Ray of Hope in Better Diagnosis and Prognosis in Neurodegenerative Diseases. Front Mol Biosci 2016; 3:72. [PMID: 27878120 PMCID: PMC5099954 DOI: 10.3389/fmolb.2016.00072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 10/24/2016] [Indexed: 12/13/2022] Open
Abstract
Neurodegeneration and neurodegenerative disorders have been a global health issue affecting the aging population worldwide. Recent advances in stem cell biology have changed the current face of neurodegenerative disease modeling, diagnosis, and transplantation therapeutics. Stem cells also serve the purpose of a simple in-vitro tool for screening therapeutic drugs and chemicals. We present the application of stem cells and induced pluripotent stem cells (iPSCs) in the field of neurodegeneration and address the issues of diagnosis, modeling, and therapeutic transplantation strategies for the most prevalent neurodegenerative disorders. We have discussed the progress made in the last decade and have largely focused on the various applications of stem cells in the neurodegenerative research arena.
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Affiliation(s)
- Shripriya Singh
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
- Academy of Scientific and Innovative ResearchLucknow, India
| | - Akriti Srivastava
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
| | - Pranay Srivastava
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
| | - Yogesh K. Dhuriya
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
- Academy of Scientific and Innovative ResearchLucknow, India
| | - Ankita Pandey
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
| | - Dipak Kumar
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
- Academy of Scientific and Innovative ResearchLucknow, India
| | - Chetan S. Rajpurohit
- System Toxicology and Health Risk Assessment Group, Council of Scientific and Industrial Research-Indian Institute of Toxicology ResearchLucknow, India
- Academy of Scientific and Innovative ResearchLucknow, India
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Angiogenic microspheres promote neural regeneration and motor function recovery after spinal cord injury in rats. Sci Rep 2016; 6:33428. [PMID: 27641997 PMCID: PMC5027575 DOI: 10.1038/srep33428] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 08/26/2016] [Indexed: 12/25/2022] Open
Abstract
This study examined sustained co-delivery of vascular endothelial growth factor (VEGF), angiopoietin-1 and basic fibroblast growth factor (bFGF) encapsulated in angiogenic microspheres. These spheres were delivered to sites of spinal cord contusion injury in rats, and their ability to induce vessel formation, neural regeneration and improve hindlimb motor function was assessed. At 2–8 weeks after spinal cord injury, ELISA-determined levels of VEGF, angiopoietin-1, and bFGF were significantly higher in spinal cord tissues in rats that received angiogenic microspheres than in those that received empty microspheres. Sites of injury in animals that received angiogenic microspheres also contained greater numbers of isolectin B4-binding vessels and cells positive for nestin or β III-tubulin (P < 0.01), significantly more NF-positive and serotonergic fibers, and more MBP-positive mature oligodendrocytes. Animals receiving angiogenic microspheres also suffered significantly less loss of white matter volume. At 10 weeks after injury, open field tests showed that animals that received angiogenic microspheres scored significantly higher on the Basso-Beattie-Bresnahan scale than control animals (P < 0.01). Our results suggest that biodegradable, biocompatible PLGA microspheres can release angiogenic factors in a sustained fashion into sites of spinal cord injury and markedly stimulate angiogenesis and neurogenesis, accelerating recovery of neurologic function.
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Systematic optimization of an engineered hydrogel allows for selective control of human neural stem cell survival and differentiation after transplantation in the stroke brain. Biomaterials 2016; 105:145-155. [PMID: 27521617 DOI: 10.1016/j.biomaterials.2016.07.028] [Citation(s) in RCA: 141] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 07/15/2016] [Accepted: 07/23/2016] [Indexed: 12/16/2022]
Abstract
Stem cell therapies have shown promise in promoting recovery in stroke but have been limited by poor cell survival and differentiation. We have developed a hyaluronic acid (HA)-based self-polymerizing hydrogel that serves as a platform for adhesion of structural motifs and a depot release for growth factors to promote transplant stem cell survival and differentiation. We took an iterative approach in optimizing the complex combination of mechanical, biochemical and biological properties of an HA cell scaffold. First, we optimized stiffness for a minimal reaction of adjacent brain to the transplant. Next hydrogel crosslinkers sensitive to matrix metalloproteinases (MMP) were incorporated as they promoted vascularization. Finally, candidate adhesion motifs and growth factors were systemically changed in vitro using a design of experiment approach to optimize stem cell survival or proliferation. The optimized HA hydrogel, tested in vivo, promoted survival of encapsulated human neural progenitor cells (iPS-NPCs) after transplantation into the stroke core and differentially tuned transplanted cell fate through the promotion of glial, neuronal or immature/progenitor states. This HA hydrogel can be tracked in vivo with MRI. A hydrogel can serve as a therapeutic adjunct in a stem cell therapy through selective control of stem cell survival and differentiation in vivo.
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Regenerative repair of Pifithrin-α in cerebral ischemia via VEGF dependent manner. Sci Rep 2016; 6:26295. [PMID: 27212231 PMCID: PMC4876321 DOI: 10.1038/srep26295] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 04/29/2016] [Indexed: 01/01/2023] Open
Abstract
Promoting regenerative repair, including neurogenesis and angiogenesis, may provide a new therapeutic strategy for treatment of stroke. P53, a well-documented transcription factor, has been reported to be involved in cerebral ischemia and also serves as an important regulator of vascular endothelial growth factor (VEGF). However, the role of p53 in endogenous regenerative repair after brain ischemia is poorly understood. In this study, we investigated the effects of PFT-α, a specific p53 inhibitor on neurogenesis and angiogenesis improvement and associated signal pathways in rats impaired by cerebral artery occlusion (MCAo). PFT-α induced neuroprotection, reduced infarct volume and neurological functional impairment after ischemic stroke. More importantly, neurogenesis and angiogenesis were greatly enhanced by PFT-α, and accompanied by increased expression of VEGF. Moreover, we got consistent results in neural stem cells (NSCs) isolated from fetal rats. In contrast, application of the anti-VEGF neutralizing antibody (RB-222) partially reversed PFT-α-induced neuroprotection and rescued p53 expression. Noteworthily, inhibition of p53 after ischemic stroke in these rats improved their outcomes via promotion of regenerative repair. In conclusion, PFT-α could serve as a promising therapeutic strategy for ischemic stroke by promoting regenerative repair.
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Bora M, Mundargi RC, Chee Y, Wong TT, Venkatraman SS. 5-Flurouracil microencapsulation and impregnation in hyaluronic acid hydrogel as composite drug delivery system for ocular fibrosis. COGENT MEDICINE 2016. [DOI: 10.1080/2331205x.2016.1182108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Affiliation(s)
- Meghali Bora
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Raghavendra C. Mundargi
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - YongDe Chee
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
| | - Tina T.L. Wong
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
- Ocular Therapeutics and Drug Delivery, Singapore Eye Research Institute, 11 Third Hospital Avenue, Singapore 168751, Singapore
| | - Subbu S. Venkatraman
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
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Hydrogels for brain repair after stroke: an emerging treatment option. Curr Opin Biotechnol 2016; 40:155-163. [PMID: 27162093 DOI: 10.1016/j.copbio.2016.04.021] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Revised: 04/02/2016] [Accepted: 04/20/2016] [Indexed: 12/23/2022]
Abstract
Stroke disability is the only major disease without an effective treatment. The substantial clinical burden of stroke in disabled survivors and the lack of a medical therapy that promotes recovery provide an opportunity to explore the use of biomaterials to promote brain repair after stroke. Hydrogels can be injected as a liquid and solidify in situ to form a gelatinous solid with similar mechanical properties to the brain. These biomaterials have been recently explored to generate pro-repair environments within the damaged organ. This review highlights the clinical problem of stroke treatment and discusses recent advances in using in situ forming hydrogels for brain repair.
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Ali SA, Yin N, Rehman A, Justilien V. Parkinson Disease-Mediated Gastrointestinal Disorders and Rational for Combinatorial Therapies. Med Sci (Basel) 2016; 4:medsci4010001. [PMID: 29083365 PMCID: PMC5635767 DOI: 10.3390/medsci4010001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 12/24/2015] [Accepted: 01/13/2016] [Indexed: 12/29/2022] Open
Abstract
A gradual loss of dopamine-producing nerve cells gives rise to a common neurodegenerative Parkinson’s disease (PD). This disease causes a neurotransmitter imbalance in the brain and initiates a cascade of complications in the rest of the body that appears as distressing symptoms which include gait problems, tremor, gastrointestinal (GI) disorders and cognitive decline. To aid dopamine deficiency, treatment in PD patients includes oral medications, in addition to other methods such as deep brain stimulation and surgical lesioning. Scientists are extensively studying molecular and signaling mechanisms, particularly those involving phenotypic transcription factors and their co-regulatory proteins that are associated with neuronal stem cell (SC) fate determination, maintenance and disease state, and their role in the pathogenesis of PD. Advancement in scientific research and “personalized medicine” to augment current therapeutic intervention and minimize the side effects of chemotherapy may lead to the development of more effective therapeutic strategies in the near future. This review focuses on PD and associated GI complications and summarizes the current therapeutic modalities that include stem cell studies and combinatorial drug treatment.
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Affiliation(s)
- Syed A Ali
- Department of Cancer Biology, Mayo Clinic Cancer Center, Jacksonville, FL 32224, USA.
| | - Ning Yin
- Department of Cancer Biology, Mayo Clinic Cancer Center, Jacksonville, FL 32224, USA.
| | - Arkam Rehman
- Department of Pain Medicine, Baptist Medical Center, Jacksonville, FL 32258, USA.
| | - Verline Justilien
- Department of Cancer Biology, Mayo Clinic Cancer Center, Jacksonville, FL 32224, USA.
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49
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The effects of cryopreservation on angiogenesis modulation activity of human amniotic membrane. Cryobiology 2015; 71:413-8. [DOI: 10.1016/j.cryobiol.2015.09.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 09/25/2015] [Accepted: 09/28/2015] [Indexed: 02/03/2023]
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50
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Fu MH, Li CL, Lin HL, Chen PC, Calkins MJ, Chang YF, Cheng PH, Yang SH. Stem cell transplantation therapy in Parkinson's disease. SPRINGERPLUS 2015; 4:597. [PMID: 26543732 PMCID: PMC4628010 DOI: 10.1186/s40064-015-1400-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/09/2015] [Accepted: 10/06/2015] [Indexed: 02/06/2023]
Abstract
Ineffective therapeutic treatments and inadequate repair ability in the central nervous system are disturbing problems for several neurological diseases. Fortunately, the development of clinically applicable populations of stem cells has provided an avenue to overcome the failure of endogenous repair systems and substitute new cells into the damaged brain. However, there are still several existing obstacles to translating into clinical application. Here we review the stem-cell based therapies for Parkinson’s disease and discuss the potential advantages and drawbacks. We hope this review may provide suggestions for viable strategies to overcome the current technical and biological issues associated with the application of stem cells in Parkinson’s disease.
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Affiliation(s)
- Mu-Hui Fu
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan.,Department of Neurology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, 83301 Taiwan
| | - Chia-Ling Li
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Hsiu-Lien Lin
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan.,Division of Breeding and Genetics, Livestock Research Institute, Council of Agriculture, Tainan, 71246 Taiwan
| | - Pei-Chun Chen
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan.,Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Marcus J Calkins
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Yu-Fan Chang
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Pei-Hsun Cheng
- Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
| | - Shang-Hsun Yang
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan.,Department of Physiology, College of Medicine, National Cheng Kung University, Tainan, 70101 Taiwan
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