文献检索文档翻译深度研究
Suppr Zotero 插件Zotero 插件
邀请有礼套餐&价格历史记录

新学期,新优惠

限时优惠:9月1日-9月22日

30天高级会员仅需29元

1天体验卡首发特惠仅需5.99元

了解详情
不再提醒
插件&应用
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
高级版
套餐订阅购买积分包
AI 工具
文献检索文档翻译深度研究
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2025

用于无缝合修复深层前角膜缺损的复制人眼角膜基质结构的水凝胶补片。

Corneal stromal structure replicating humanized hydrogel patch for sutureless repair of deep anterior-corneal defect.

机构信息

Eye Institute of Shandong First Medical University, State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, 266071, China.

Eye Institute of Shandong First Medical University, Eye Hospital of Shandong First Medical University (Shandong Eye Hospital), Jinan, 250021, China.

出版信息

Biomaterials. 2025 Feb;313:122754. doi: 10.1016/j.biomaterials.2024.122754. Epub 2024 Aug 14.


DOI:10.1016/j.biomaterials.2024.122754
PMID:39197237
Abstract

A critical shortage of donor corneas exists worldwide. Hydrogel patches with a biological architecture and functions that simulate those of native corneas have garnered considerable attention. This study introduces a stromal structure replicating corneal patch (SRCP) composed of a decellularized cornea-templated nanotubular skeleton, recombinant human collagen, and methacrylated gelatin, exhibiting a similar ultrastructure and transmittance (above 80 %) to natural cornea. The SRCP is superior to the conventional recombinant human collagen patch in terms of biomechanical properties and resistance to enzymatic degradation. Additionally, SRCP promotes corneal epithelial and stromal cell migration while preventing the trans-differentiation of stromal cells into myofibroblasts. When applied to an ocular surface (37 °C), SRCP releases methacrylated gelatin, which robustly binds SRCP to the corneal stroma after activation by 405 nm light. Compared to gelatin-based photocurable hydrogel, the SRCP better supports the restoration of normal corneal curvature and withstands deformation under an elevated intraocular pressure (100 mmHg). In an in vivo deep anterior-corneal defect model, SRCP facilitated epithelial healing and vision recovery within 2 weeks, maintained graft structural stability, and inhibited stromal scarring at 4 weeks post-operation. The ideal performance of the SRCP makes it a promising humanized corneal equivalent for sutureless clinical applications.

摘要

全世界都存在供体角膜严重短缺的问题。具有模拟天然角膜生物结构和功能的水凝胶贴片引起了广泛关注。本研究介绍了一种由脱细胞角膜模板纳米管状骨架、重组人胶原蛋白和甲基丙烯酰化明胶组成的基质结构复制角膜贴片(SRCP),其具有类似于天然角膜的超微结构和透光率(超过 80%)。与传统的重组人胶原蛋白贴片相比,SRCP 在生物力学性能和抗酶降解方面具有优势。此外,SRCP 促进角膜上皮和基质细胞迁移,同时防止基质细胞向肌成纤维细胞的转分化。当应用于眼表面(37°C)时,SRCP 释放甲基丙烯酰化明胶,在 405nm 光激活后,甲基丙烯酰化明胶可使 SRCP 牢固地结合到角膜基质上。与基于明胶的光固化水凝胶相比,SRCP 更有利于恢复正常的角膜曲率,并在 100mmHg 的高眼压下耐受变形。在体内深层前角膜缺损模型中,SRCP 可在 2 周内促进上皮愈合和视力恢复,在术后 4 周时保持移植物结构稳定,并抑制基质瘢痕形成。SRCP 的理想性能使其成为一种有前途的、适合于无缝线临床应用的人源化角膜等效物。

相似文献

[1]
Corneal stromal structure replicating humanized hydrogel patch for sutureless repair of deep anterior-corneal defect.

Biomaterials. 2025-2

[2]
Enhanced regeneration of corneal tissue via a bioengineered collagen construct implanted by a nondisruptive surgical technique.

Tissue Eng Part A. 2015-3

[3]
A "T.E.S.T." hydrogel bioadhesive assisted by corneal cross-linking for in situ sutureless corneal repair.

Bioact Mater. 2023-2-11

[4]
ECM-based bioadhesive hydrogel for sutureless repair of deep anterior corneal defects.

Biomater Sci. 2024-4-30

[5]
Hydrogels derived from acellular porcine corneal stroma enhance corneal wound healing.

Acta Biomater. 2021-10-15

[6]
Human cornea-derived extracellular matrix hydrogel for prevention of post-traumatic corneal scarring: A translational approach.

Acta Biomater. 2023-11

[7]
Decellularized porcine cornea-derived hydrogels for the regeneration of epithelium and stroma in focal corneal defects.

Ocul Surf. 2020-10

[8]
A double-crosslinked nanocellulose-reinforced dexamethasone-loaded collagen hydrogel for corneal application and sustained anti-inflammatory activity.

Acta Biomater. 2023-12

[9]
Bio-orthogonally crosslinked hyaluronate-collagen hydrogel for suture-free corneal defect repair.

Biomaterials. 2020-10

[10]
Methacrylated gelatin hydrogels as corneal stroma substitutes: study.

J Biomater Sci Polym Ed. 2019-9-23

引用本文的文献

[1]
Self-healing adhesive oxidized guar gum hydrogel loaded with mesenchymal stem cell exosomes for corneal wound healing.

J Nanobiotechnology. 2025-4-28

文献AI研究员

20分钟写一篇综述,助力文献阅读效率提升50倍

立即体验

用中文搜PubMed

大模型驱动的PubMed中文搜索引擎

马上搜索

推荐工具

医学文档翻译智能文献检索