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首页> 外文期刊>Biomaterials Science >An injectable collagen/poly(gamma-glutamic acid) hydrogel as a scaffold of stem cells and alpha-lipoic acid for enhanced protection against renal dysfunction
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An injectable collagen/poly(gamma-glutamic acid) hydrogel as a scaffold of stem cells and alpha-lipoic acid for enhanced protection against renal dysfunction

机译:作为干细胞的支架和α-硫辛酸的可注射胶原/聚(γ-谷氨酸)水凝胶,可提高肾功能障碍的保护

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摘要

Mesenchymal stem cells (MSCs) can ameliorate renal injury and accelerate repair of acute kidney injury. Herein, we developed a collagen/poly(gamma-glutamic acid) (gamma-PGA) hydrogel as an injectable scaffold for the delivery of mouse MSCs (mMSCs) and anti-oxidant drugs into injured sites. By the introduction of gamma-PGA into conventional collagen, the viscosity of collagen was reduced at ambient temperature for easy handling, while the elastic and viscous moduli of collagen were increased and a new porous structure was generated near body temperature. When in situ gel-forming collagen/gamma-PGA hydrogels loaded with mMSCs and alpha-lipoic acid (LA) were administered to a mouse model of renal dysfunction, they significantly attenuated the level of blood urea nitrogen and creatinine, which resulted from the increased retention of therapeutic mMSCs and the controlled release of anti-oxidant drugs at the injured site. These findings suggested that this novel type of hydrogel could be applied as an injectable scaffold for use in regenerative medicine.
机译:间充质干细胞(MSCs)可以改善肾损伤并加速急性肾损伤的修复。在此,我们开发了胶原/聚(γ-谷氨酸)(γ-PGA)水凝胶作为可注射支架,用于将小鼠MSCs(MMSCs)和抗氧化药物输送到受伤的位点。通过将γ-PGA引入常规胶原蛋白,在环境温度下降低胶原蛋白的粘度以便于处理,而胶原的弹性和粘性模量增加,并且在体温附近产生了新的多孔结构。当使用MMSCs和α-硫辛酸(LA)的原位凝胶形成胶原/γ-PGA水凝胶中施用到肾功能紊乱的小鼠模型中时,它们显着减弱了血尿尿素氮和肌酐的水平,这是由增加产生的保留治疗MMSCs和受伤部位抗氧化药物的控制释放。这些发现表明,这种新型水凝胶可以作为可注射支架应用以用于再生药物。

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  • 来源
    《Biomaterials Science》 |2017年第2期|共10页
  • 作者单位

    Sungkyunkwan Univ Sch Chem Engn SKKU Adv Inst Nanotechnol SAINT Suwon 16419 South Korea;

    KRIBB Lab Anim Resource Ctr 125 Gwahak Ro Daejeon 305806 South Korea;

    Sungkyunkwan Univ Sch Chem Engn SKKU Adv Inst Nanotechnol SAINT Suwon 16419 South Korea;

    KRIBB Lab Anim Resource Ctr 125 Gwahak Ro Daejeon 305806 South Korea;

    KRIBB Lab Anim Resource Ctr 125 Gwahak Ro Daejeon 305806 South Korea;

    Sungkyunkwan Univ Sch Chem Engn SKKU Adv Inst Nanotechnol SAINT Suwon 16419 South Korea;

    Sungkyunkwan Univ Sch Chem Engn SKKU Adv Inst Nanotechnol SAINT Suwon 16419 South Korea;

    KRIBB Lab Anim Resource Ctr 125 Gwahak Ro Daejeon 305806 South Korea;

    Sungkyunkwan Univ Sch Chem Engn SKKU Adv Inst Nanotechnol SAINT Suwon 16419 South Korea;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分子生物学;
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