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Tissue Adhesive Catechol-Modified Hyaluronic Acid Hydrogel for Effective, Minimally Invasive Cell Therapy

机译:组织粘附性邻苯二酚修饰的透明质酸水凝胶,可有效用于微创细胞治疗

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摘要

Current hyaluronic acid (HA) hydrogel systems often cause cytotoxicity to encapsulated cells and lack the adhesive property required for effective localization of transplanted cells in vivo. In addition, the injection of hydrogel into certain organs (e.g., liver, heart) induces tissue damage and hemorrhage. In this study, we describe a bioinspired, tissue-adhesive hydrogel that overcomes the limitations of current HA hydrogels through its improved biocompatibility and potential for minimally invasive cell transplantation. HA functionalized with an adhesive catecholamine motif of mussel foot protein forms HA-catechol (HA-CA) hydrogel via oxidative crosslinking. HA-CA hydrogel increases viability, reduces apoptosis, and enhances the function of two types of cells (human adipose-derived stem cells and hepatocytes) compared with a typical HA hydrogel crosslinked by photopolymerization. Due to the strong tissue adhesiveness of the HA-CA hydrogel, cells are easily and efficiently transplanted onto various tissues (e.g., liver and heart) without the need for injection. Stem cell therapy using the HA-CA hydrogel increases angiogenesis in vivo, leading to improved treatment of ischemic diseases. HA-CA hydrogel also improved hepatic functions of transplanted hepatocytes in vivo. Thus, this bioinspired, tissue-adhesive HA hydrogel can enhance the efficacy of minimally invasive cell therapy.
机译:当前的透明质酸(HA)水凝胶系统通常对包封的细胞引起细胞毒性,并且缺乏体内有效定位移植细胞所需的粘附特性。另外,将水凝胶注入某些器官(例如,肝,心脏)会引起组织损伤和出血。在这项研究中,我们描述了一种受生物启发的组织粘附水凝胶,该凝胶通过改善的生物相容性和微创细胞移植的潜力克服了当前HA水凝胶的局限性。用贻贝足蛋白的粘附性儿茶酚胺基序官能化的HA通过氧化交联形成HA-儿茶酚(HA-CA)水凝胶。与通过光聚合作用交联的典型HA水凝胶相比,HA-CA水凝胶可提高活力,减少细胞凋亡并增强两种类型的细胞(人脂肪干细胞和肝细胞)的功能。由于HA-CA水凝胶具有很强的组织粘附性,因此无需注射即可轻松有效地将细胞移植到各种组织(例如肝脏和心脏)上。使用HA-CA水凝胶的干细胞疗法可增加体内血管生成,从而改善缺血性疾病的治疗。 HA-CA水凝胶还可以改善体内移植肝细胞的肝功能。因此,这种受生物启发的,具有组织粘附力的HA水凝胶可以增强微创细胞治疗的功效。

著录项

  • 来源
    《Advanced Functional Materials》 |2015年第25期|3814-3824|共11页
  • 作者单位

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Dept Chem, Taejon 305701, South Korea;

    Konkuk Univ, Dept Stem Cell Biol, Sch Med, Seoul 143701, South Korea;

    Konkuk Univ, Dept Stem Cell Biol, Sch Med, Seoul 143701, South Korea;

    Konkuk Univ, Dept Stem Cell Biol, Sch Med, Seoul 143701, South Korea;

    Dankook Univ, Dept Nanobiomed Sci, Cheonan 330714, South Korea|Dankook Univ, PLUS NBM Global Res Ctr Regenerat Med BK21, Cheonan 330714, South Korea;

    Sungkyunkwan Univ, Sch Chem Engn, Suwon 440746, South Korea|Sungkyunkwan Univ, SKKU Adv Inst Nanotechnol SAINT, Suwon 440746, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea;

    Sungkyunkwan Univ, Sch Med, Div Vasc Surg, Samsung Med Ctr, Seoul 135710, South Korea;

    Korea Adv Inst Sci & Technol, Grad Sch Nanosci & Technol, Dept Chem, Taejon 305701, South Korea;

    Yonsei Univ, Dept Biotechnol, Seoul 120749, South Korea|Yonsei Univ, Coll Med, Dept Neurosurg, Seoul 120750, South Korea;

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  • 正文语种 eng
  • 中图分类
  • 关键词

    adhesive hydrogels; catechol; cell therapy; hyaluronic acid; tissue reconstruction;

    机译:粘性水凝胶;儿茶酚;细胞疗法;透明质酸;组织重建;

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