首页> 外文期刊>Acta biomaterialia >Injectable, self-healable zwitterionic cryogels with sustained microRNA - cerium oxide nanoparticle release promote accelerated wound healing
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Injectable, self-healable zwitterionic cryogels with sustained microRNA - cerium oxide nanoparticle release promote accelerated wound healing

机译:可注射的,自我愈合的两性离子冷冻机,具有持续的MicroRNA - 氧化铈纳米粒子释放促进加速伤口愈合

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摘要

Diabetics are prone to chronic wounds that have slower healing, and methods of accelerating the wound closure and to ensure protection from infections are critically needed. MicroRNA-146a gets dysregulated in diabetic wounds and injection of this microRNA combined with reactive oxygen species-scavenging cerium oxide nanoparticles (CNPs) can reduce inflammation and improve wound healing; however, a better delivery method than intradermal injections is needed. Here we demonstrate a biomaterial system of zwitterionic cryogels (gels formed below freezing temperatures) laden with CNP-miR146a that are topically applicable, injectable, self-healable, and provide sustained release of the therapeutic molecules. These cryogels are comprised of CBMA or SBMA and HEMA, and do not contain chemical crosslinkers. Properties of the gels can be manipulated by changing monomer type and ratio. These materials have demonstrated efficacy and viability in vivo with a diabetic mouse wound healing model. Overall, these materials have a high potential for application in wound treatments due to their ease of production, antifouling characteristics, durability, topical application, and sustained release mechanics.
机译:糖尿病患者容易发生慢性伤口,具有较慢的愈合,以及加速伤口闭合并确保感染保护的方法受到严重需要。 MicroRNA-146A在糖尿病伤口中感到困扰,并注射该MicroRNA与反应性氧物质 - 清除氧化铈纳米颗粒(CNPS)可以降低炎症并改善伤口愈合;然而,需要比皮内注射更好的递送方法。在这里,我们证明了一种具有CNP-MIR146A的两性离子冷冻机(凝胶,下面形成的凝胶),其具有局部适用的,可注射,自我愈合,并提供治疗分子的持续释放。这些冷冻机由CBMA或SBMA和HEMA组成,不含化学交联剂。可以通过改变单体式和比例来操纵凝胶的性质。这些材料具有糖尿病小鼠伤口愈合模型的体内疗效和活力。总体而言,由于它们的易于生产,防污特性,耐用性,局部应用和持续的释放力学,这些材料具有高潜力。

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