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Developing Hybrid Polymer Scaffolds Using Peptide Modified Biopolymers for Cell Implantation
ACS Biomaterials Science & Engineering ( IF 5.4 ) Pub Date : 2017-08-30 00:00:00 , DOI: 10.1021/acsbiomaterials.7b00383
Sinoj Abraham 1 , Purushothaman Kuppan , Shammy Raj 1 , Bassem Salama , Gregory S. Korbutt , Carlo D. Montemagno 1
Affiliation  

Polymeric scaffolds containing biomimics offer exciting therapies with broad potential impact for cellular therapies and thereby potentially improve success rates. Here we report the designing and fabrication of a hybrid scaffold that can prevent a foreign body reaction and maintain cell viability. A biodegradable acrylic based cross-linkable polycaprolactone based polymer was developed and using a multihead electrospinning station to fabricate hybrid scaffolds. This consists of cell growth factor mimics and factors to prevent a foreign body reaction. Transplantation studies were performed subcutaneously and in epididymal fat pad of immuno-competent Balb/c mice and immuno-suppressed B6 Rag1 mice and we demonstrated extensive neo-vascularization and maintenance of islet cell viability in subcutaneously implanted neonatal porcine islet cells for up to 20 weeks of post-transplant. This novel approach for cell transplantation can improve the revascularization and allow the integration of bioactive molecules such as cell adhesion molecules, growth factors, etc.

中文翻译:

使用肽修饰的生物聚合物开发用于细胞植入的杂化聚合物支架。

含有仿生生物的聚合物支架提供了令人兴奋的疗法,对细胞疗法具有广泛的潜在影响,从而有可能提高成功率。在这里,我们报告设计和制造的混合支架,可以防止异物反应并保持细胞活力。开发了一种可生物降解的丙烯酸基可交联聚己内酯基聚合物,并使用多头静电纺丝台制造了混合支架。这由细胞生长因子模拟物和防止异物反应的因素组成。在具有免疫功能的Balb / c小鼠和免疫抑制的B6 Rag1小鼠的皮下和附睾脂肪垫中进行了移植研究,我们证明了皮下植入的新生猪胰岛细胞中广泛的新血管形成和胰岛细胞活力的维持长达20周移植后。这种用于细胞移植的新方法可以改善血运重建,并允许整合生物活性分子,例如细胞粘附分子,生长因子等。
更新日期:2017-08-30
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