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用于糖尿病兔角膜上皮损伤的基于壳聚糖的四维打印支架携带的角膜缘干细胞

Limbal stem cells carried by a four-dimensional -printed chitosan-based scaffold for corneal epithelium injury in diabetic rabbits.

作者信息

Wang Mengyuan, Liu Kaibin, Wang Xiaomin, Shang Zhen, Liu Yiming, Pan Nailong, Sun Xueqing, Xu Wenhua

机构信息

Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao, China.

Department of Thoracic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China.

出版信息

Front Physiol. 2024 Jun 3;15:1285850. doi: 10.3389/fphys.2024.1285850. eCollection 2024.

Abstract

Herein, we obtained and characterized deltaN p63- and adenosine triphosphate-binding cassette subfamily G member 2-expressing limbal stem cells (LSCs). Chitosan and carboxymethyl chitosan (CTH) were cross-linked to be an in situ thermosensitive hydrogel (ACH), which was printed through four-dimensional (4D) printing to obtain a porous carrier with uniform pore diameter (4D-CTH). Rabbits were injected with alloxan to induce diabetes mellitus (DM). Following this, the LSC-carrying hydrogel was spread on the surface of the cornea of the diabetic rabbits to cure corneal epithelium injury. Compared with the control group (LSCs only), rapid wound healing was observed in rabbits treated with LSC-carrying 4D-CTH. Furthermore, the test group also showed better corneal nerve repair ability. The results indicated the potential of LSC-carrying 4D-CTH in curing corneal epithelium injury. 4D-CTH holds potential as a useful tool for studying regenerative processes occurring during the treatment of various diabetic corneal epithelium pathologies with the use of stem cell-based technologies.

摘要

在此,我们获取并鉴定了表达ΔN p63和三磷酸腺苷结合盒亚家族G成员2的角膜缘干细胞(LSCs)。壳聚糖和羧甲基壳聚糖(CTH)交联形成原位热敏水凝胶(ACH),通过四维(4D)打印将其制成孔径均匀的多孔载体(4D - CTH)。给兔子注射四氧嘧啶诱导糖尿病(DM)。随后,将携带LSCs的水凝胶铺展在糖尿病兔的角膜表面以治愈角膜上皮损伤。与对照组(仅LSCs)相比,用携带LSCs的4D - CTH治疗的兔子伤口愈合迅速。此外,试验组还表现出更好的角膜神经修复能力。结果表明携带LSCs的4D - CTH在治愈角膜上皮损伤方面具有潜力。4D - CTH作为一种有用的工具,对于利用基于干细胞的技术研究各种糖尿病角膜上皮病变治疗过程中发生的再生过程具有潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ec1a/11180886/548f3b9aa1f0/fphys-15-1285850-g001.jpg

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