Bioactive injectable hydrogels for on demand molecule/cell delivery and for tissue regeneration in the central nervous system

被引：65
作者：
Grimaudo, M. A. [1 ]
Krishnakumar, G. S. [2 ]
Giusto, E. [1 ]
Furlani, F. [1 ]
Bassi, G. [1 ]
Rossi, A. [1 ]
Molinari, F. [3 ]
Lista, F. [3 ]
Montesi, M. [1 ]
Panseri, S. [1 ]
机构：
[1] Natl Res Council ISTEC CNR, Inst Sci & Technol Ceram, Faenza Ravenna, Italy
[2] PSG Inst Adv Studies, Tissue Engn Lab, Dept Biotechnol, Coimbatore, Tamil Nadu, India
[3] Army Med Ctr, Sci Dept, Rome, Italy
来源：
ACTA BIOMATERIALIA | 2022年 / 140卷
关键词：
Stimuli-responsive material; Central nervous system; Injectable hydrogel; Regenerative medicine; Delivery system; Nanogels; HYALURONIC-ACID HYDROGELS; NEURAL STEM-CELLS; NEURITE OUTGROWTH; COLLAGEN HYDROGEL; ALIGNED COLLAGEN; DRUG-DELIVERY; BRAIN-INJURY; REPAIR; RELEASE; DIFFERENTIATION;
D O I：
10.1016/j.actbio.2021.11.038
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
Currently there are no potential curative therapies that can improve the central nervous system (CNS) regeneration after traumatic injuries or diseases. Indeed, the regeneration of CNS is greatly impaired by limited drug penetration across the blood brain barrier (BBB), poor drug targeting, deficient progeni-tor neural cells and limited proliferation of mature neural cells. To overcome these limitations, bioengi-neered injectable hydrogels in combination with drug and cell therapy have been proposed to mimic the complexity of the CNS microenvironment and architecture. Additionally, to enhance relevant CNS regen-eration, proper biophysical and biochemical cues are needed. Recently, great efforts have been devoted to tailor stimuli-responsive hydrogels as novel carrier systems which are able to guide neural tissue re-generation. This review provides an extensive overview on the most promising injectable hydrogels for neural tissue engineering. A special emphasis is made to highlight the ability of these hydrogels to de-liver bioactive compounds/cells upon the exposure to internal and external stimuli. Bioactive injectable hydrogels have a broad application in central nervous system's (CNS) regeneration. This review gives an overview of the latest pioneering approaches in CNS recovery using stimuli-responsive hydrogels for sev-eral neurodegenerative disorders.Statement of significance This review summarizes the latest innovations on bioactive injectable hydrogels, focusing on tailoring in-ternal/external stimuli-responsive hydrogels for the new injectable systems design, able to guide neural tissue response. The purpose is to highlight the advantages and the limitations of thermo-responsive, photo responsive, magnetic responsive, electric responsive, ultrasound responsive and enzymes-triggered injectable hydrogels in developing customizable neurotherapies. We believe that this comprehensive re-view will help in identifying the strengths and gaps in the existing literature and to further support the use of injectable hydrogels in stimulating CNS regeneration.(c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：88 / 101
页数：14
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