Design of hydrogel-based scaffolds for in vitro three-dimensional human skin model reconstruction

被引:39
作者
Tan, Shi Hua [1 ]
Chua, Dun An Cliff [1 ]
Tang, Je Re Jeremiah [1 ]
Bonnard, Carine [1 ,2 ]
Leavesley, David [2 ]
Liang, Kun [1 ]
机构
[1] ASTAR, A STAR Skin Res Labs A SRL, Singapore, Singapore
[2] ASTAR, Skin Res Inst Singapore SRIS, Asian Skin Biobank, Singapore, Singapore
关键词
3D skin model; Hydrogel scaffold; Skin tissue engineering; Bioprinting; DECELLULARIZED EXTRACELLULAR-MATRIX; DERMAL FIBROBLASTS; GROWTH-FACTOR; RAT SKIN; CARBOXYMETHYL CELLULOSE; COLLAGEN SCAFFOLDS; EQUIVALENT TISSUE; BASEMENT-MEMBRANE; GELATIN HYDROGEL; ARTIFICIAL SKIN;
D O I
10.1016/j.actbio.2022.09.068
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
In vitro three-dimensional (3D) skin tissue models are critical tools in advancing our understanding of ba-sic skin physiology and function as well as in specific applications such as toxicity testing of dermatolog-ical compounds. However, the utilization of such skin models is often limited by the structural instability of the construct, lack of physiologically relevant features and weak barrier function. In this review, we highlight the current research effort s in hydrogel biomaterial selection and scaffold design that allow for maturation of engineered skin in vitro , with special emphasis on matured full-thickness (including epi-dermal and dermal compartments) skin. The different types of scaffold biomaterials, broadly categorized as natural, synthetic, or composite will also be discussed. At the same time, we will outline strategies for next-generation biomimetic skin templates incorporating skin appendages or perfusion systems that can more closely reflect the native skin environment.Statement of significance In vitro 3D human skin models are critical tools in advancing our understanding of skin physiology and function. Many of the existing reconstructed models are limited in terms of structure and complexity, thus failing to recapitulate native human skin. In order to address this, hydrogels have been identified as useful scaffold materials for fabricating the dermal equivalent of 3D skin models, allowing for greater flexibility and control in scaffold properties and cellular incorporation. This review aims to provide a critical discussion of the biomaterial selection and design strategies in the construction of hydrogel-based full-thickness skin equivalents. At the same time, we will offer insights into the future developments and technological advances which can accelerate the progress in this field.(c) 2022 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:13 / 37
页数:25
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