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Simple and robust 3D bioprinting of full-thickness human skin tissue

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机构: [1]Hefei Univ, Sch Biol Food & Environm, Hefei 230601, Peoples R China [2]Capital Med Univ, Xuanwu Hosp, Dept Vasc Surg, Beijing, Peoples R China [3]Capital Med Univ, Inst Vasc Surg, Beijing, Peoples R China [4]Dezhou Univ, Inst Biophys, Shandong Key Lab Biophys, Dezhou, Shandong, Peoples R China [5]Xian Childrens Hosp, Dept Cardiovasc Surg, Xian 710003, Peoples R China
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关键词: Full-thickness skin 3D bioprinting bio-inks stratum corneum formation

摘要:
Artificial skins have been used as skin substitutes for wound healing in the clinic, and as in vitro models for safety assessment in cosmetic and pharmaceutical industries. The three-dimensional (3D) bioprinting technique provides a promising strategy in the fabrication of artificial skins. Despite the technological advances, many challenges remain to be conquered, such as the complicated preparation conditions for bio-printed skin and the unavailability of stability and robustness of skin bioprinting. Here, we formulated a novel bio-ink composed of gelatin, sodium alginate and fibrinogen. By optimizing the ratio of components in the bio-ink, the design of the 3D model and the printing conditions, a fibroblasts-containing dermal layer construct was firstly fabricated, on the top of which laminin and keratinocytes were sequentially placed. Through air-liquid interface (ALI) culture by virtue of sterile wire mesh, a full-thickness skin tissue was thus prepared. HE and immunofluorescence staining showed that the bio-printed skin was not only morphologically representative of the human skin, but also expressed the specific markers related to epidermal differentiation and stratum corneum formation. The presented easy and robust preparation of full-thickness skin constructs provides a powerful tool for the establishment of artificial skins, holding critical academic significance and application value.

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出版当年[2021]版:
大类 | 4 区 生物学
小类 | 4 区 生物工程与应用微生物
最新[2023]版:
大类 | 4 区 生物学
小类 | 4 区 生物工程与应用微生物
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出版当年[2020]版:
Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
最新[2023]版:
Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

影响因子: 最新[2023版] 最新五年平均 出版当年[2020版] 出版当年五年平均 出版前一年[2019版] 出版后一年[2021版]

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第一作者机构: [1]Hefei Univ, Sch Biol Food & Environm, Hefei 230601, Peoples R China
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通讯机构: [1]Hefei Univ, Sch Biol Food & Environm, Hefei 230601, Peoples R China [5]Xian Childrens Hosp, Dept Cardiovasc Surg, Xian 710003, Peoples R China [*1]School of Biology, Food and Environment, Hefei University, Hefei 230601, China [*2]Department of Cardiovascular Surgery, Xi’an Children’s Hospital, Xi’an 710003, China
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