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Biomodification of PCL Scaffolds with Matrigel, HA, and SR1 Enhances De Novo Ectopic Bone Marrow Formation Induced by rhBMP-2

机译:基质胶,HA和SR1对PCL支架的生物修饰增强了rhBMP-2诱导的从头异位骨髓形成。

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The de novo formation of ectopic bone marrow was induced using 1.2-mm-thin polycaprolactone (PCL) scaffolds biomodified with several different biomaterials. In vivo investigations of de novo bone and bone marrow formation indicated that subcutaneous implantation of PCL scaffolds coated with recombinant human bone morphogenetic protein-2 (rhBMP-2) plus Matrigel, hydroxyapatite (HA), or StemRegenin 1 (SR1) improved formation of bone and hematopoietic bone marrow as determined by microcomputed tomography, and histological and hematopoietic characterizations. Our study provides evidence that thin PCL scaffolds biomodified with Matrigel, HA, and SR1 mimic the environments of real bone and bone marrow, thereby enhancing the de novo ectopic bone marrow formation induced by rhBMP-2. This ectopic bone marrow model will serve as a unique and essential tool for basic research and for clinical applications of postnatal tissue engineering and organ regeneration.
机译:使用1.2 mm薄的聚己内酯(PCL)支架(经几种不同的生物材料生物修饰)诱导异位骨髓从头形成。对新生骨和骨髓形成的体内研究表明,皮下植入重组人骨形态发生蛋白2(rhBMP-2)加上基质胶,羟基磷灰石(HA)或StemRegenin 1(SR1)涂层的PCL支架可改善骨形成通过微计算机断层扫描以及组织学和造血学特征确定的造血骨髓。我们的研究提供的证据表明,经Matrigel,HA和SR1生物修饰的薄PCL支架可模拟真实骨骼和骨髓的环境,从而增强rhBMP-2诱导的从头异位骨髓形成。这种异位骨髓模型将作为基础研究以及产后组织工程和器官再生的临床应用的独特且必不可少的工具。

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