通过 3D 生物打印技术对慢性伤口的天然生物墨水的人皮肤细胞的细胞相互作用:全面综述。

Cellular Interaction of Human Skin Cells towards Natural Bioink via 3D-Bioprinting Technologies for Chronic Wound: A Comprehensive Review.

机构信息

Centre for Tissue Engineering and Regenerative Medicine, Faculty of Medicine, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia.

Department of Surgery, Hospital Canselor Tuanku Muhriz, Universiti Kebangsaan Malaysia, Cheras, Kuala Lumpur 56000, Malaysia.

出版信息

Int J Mol Sci. 2022 Jan 1;23(1):476. doi: 10.3390/ijms23010476.

Abstract

Skin substitutes can provide a temporary or permanent treatment option for chronic wounds. The selection of skin substitutes depends on several factors, including the type of wound and its severity. Full-thickness skin grafts (SGs) require a well-vascularised bed and sometimes will lead to contraction and scarring formation. Besides, donor sites for full-thickness skin grafts are very limited if the wound area is big, and it has been proven to have the lowest survival rate compared to thick- and thin-split thickness. Tissue engineering technology has introduced new advanced strategies since the last decades to fabricate the composite scaffold via the 3D-bioprinting approach as a tissue replacement strategy. Considering the current global donor shortage for autologous split-thickness skin graft (ASSG), skin 3D-bioprinting has emerged as a potential alternative to replace the ASSG treatment. The three-dimensional (3D)-bioprinting technique yields scaffold fabrication with the combination of biomaterials and cells to form bioinks. Thus, the essential key factor for success in 3D-bioprinting is selecting and developing suitable bioinks to maintain the mechanisms of cellular activity. This crucial stage is vital to mimic the native extracellular matrix (ECM) for the sustainability of cell viability before tissue regeneration. This comprehensive review outlined the application of the 3D-bioprinting technique to develop skin tissue regeneration. The cell viability of human skin cells, dermal fibroblasts (DFs), and keratinocytes (KCs) during in vitro testing has been further discussed prior to in vivo application. It is essential to ensure the printed tissue/organ constantly allows cellular activities, including cell proliferation rate and migration capacity. Therefore, 3D-bioprinting plays a vital role in developing a complex skin tissue structure for tissue replacement approach in future precision medicine.

摘要

皮肤替代物可为慢性创面提供一种临时或永久的治疗选择。皮肤替代物的选择取决于几个因素,包括创面类型及其严重程度。全厚皮片(SGs)需要有一个良好的血管化床,有时会导致收缩和瘢痕形成。此外,如果创面面积较大,全厚皮片的供体部位非常有限,而且与厚和薄断层皮片相比,其存活率最低。组织工程技术在过去几十年中引入了新的先进策略,通过 3D 生物打印方法制造复合支架作为组织替代策略。考虑到目前全球对自体断层皮片(ASSG)的供体短缺,皮肤 3D 生物打印已成为替代 ASSG 治疗的潜在选择。三维(3D)生物打印技术可将生物材料和细胞结合起来制造支架,从而产生支架制造。因此,3D 生物打印成功的关键因素是选择和开发合适的生物墨水来维持细胞活性的机制。这个关键阶段对于模拟天然细胞外基质(ECM)至关重要,以便在组织再生之前维持细胞活力。本综述概述了 3D 生物打印技术在开发皮肤组织再生中的应用。在进行体内应用之前,进一步讨论了人类皮肤细胞、真皮成纤维细胞(DFs)和角质形成细胞(KCs)在体外测试中的细胞活力。确保打印组织/器官不断允许细胞活动,包括细胞增殖率和迁移能力,这一点至关重要。因此,3D 生物打印在未来精准医学中为组织替代方法开发复杂的皮肤组织结构方面发挥着重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/04b8/8745539/dc409c408523/ijms-23-00476-g001.jpg

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