Henrich Dirk, Verboket René, Schaible Alexander, Kontradowitz Kerstin, Oppermann Elsie, Brune Jan C, Nau Christoph, Meier Simon, Bonig Halvard, Marzi Ingo, Seebach Caroline
Department of Trauma, Hand and Reconstructive Surgery, Hospital of the Goethe University, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany.
Department of General and Visceral Surgery, Hospital of the Goethe University, 60590 Frankfurt am Main, Germany.
Biomed Res Int. 2015;2015:762407. doi: 10.1155/2015/762407. Epub 2015 Feb 23.
Bone marrow mononuclear cells (BMCs) are suitable for bone tissue engineering. Comparative data regarding the needs of BMC for the adhesion on biomaterials and biocompatibility to various biomaterials are lacking to a large extent. Therefore, we evaluated whether a surface coating would enhance BMC adhesion and analyze the biocompatibility of three different kinds of biomaterials. BMCs were purified from human bone marrow aspirate samples. Beta tricalcium phosphate (β-TCP, without coating or coated with fibronectin or human plasma), demineralized bone matrix (DBM), and bovine cancellous bone (BS) were assessed. Seeding efficacy on β-TCP was 95% regardless of the surface coating. BMC demonstrated a significantly increased initial adhesion on DBM and β-TCP compared to BS. On day 14, metabolic activity was significantly increased in BMC seeded on DBM in comparison to BMC seeded on BS. Likewise increased VEGF-synthesis was observed on day 2 in BMC seeded on DBM when compared to BMC seeded on BS. The seeding efficacy of BMC on uncoated biomaterials is generally high although there are differences between these biomaterials. Beta-TCP and DBM were similar and both superior to BS, suggesting either as suitable materials for spatial restriction of BMC used for regenerative medicine purposes in vivo.
骨髓单个核细胞(BMCs)适用于骨组织工程。目前在很大程度上缺乏关于BMC在生物材料上黏附需求以及与各种生物材料生物相容性的比较数据。因此,我们评估了表面涂层是否会增强BMC的黏附,并分析了三种不同生物材料的生物相容性。BMCs从人骨髓抽吸样本中纯化而来。对β-磷酸三钙(β-TCP,未涂层或涂有纤连蛋白或人血浆)、脱矿骨基质(DBM)和牛松质骨(BS)进行了评估。无论表面涂层如何,BMC在β-TCP上的接种效率均为95%。与BS相比,BMC在DBM和β-TCP上的初始黏附显著增加。在第14天,接种在DBM上的BMC的代谢活性相比于接种在BS上的BMC显著增加。同样,与接种在BS上的BMC相比,接种在DBM上的BMC在第2天观察到VEGF合成增加。尽管这些生物材料之间存在差异,但BMC在未涂层生物材料上的接种效率总体较高。β-TCP和DBM相似,且均优于BS,表明二者均可作为用于体内再生医学目的的BMC空间限制的合适材料。