Spatial regulation of controlled bioactive factor delivery for bone tissue engineering.

Spatial regulation of controlled bioactive factor delivery for bone tissue engineering.
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用于骨组织工程的受控生物活性因子输送的空间调节。

DOI:
10.1016/j.addr.2014.11.018
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发表时间:
2015-04
影响因子:
16.1
通讯作者:
Alsberg, Eben
Alsberg, Eben
中科院分区:
医学1区
文献类型:
--
作者:
Samorezov, Julia E.;Alsberg, Eben

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目前用于临界尺寸骨缺损的治疗选择的局限性产生了对组织工程骨策略的显著临床需求。这篇综述介绍了如何控制时空传递的生长因子,核酸,药物和小分子可能有助于重现信号存在于骨发育和愈合,再生骨与其他结缔组织的接口,并增强血管化的组织工程骨。国家的最先进的技术,用于创建空间控制模式的生物活性因子的材料的表面上,以建立3D材料与模式的信号呈现在其散装,和模式的生物活性因子输送后,支架制造,突出其在骨组织工程中的应用。随着这些技术在诸如空间分辨率和图案化速度等领域的改进,它们将继续作为用于理解细胞对体外空间调节的生物活性因子信号呈递的响应的模型系统以及作为研究这些信号的限定空间排列的能力以驱动体内骨再生的策略的价值增长。
Limitations of current treatment options for critical size bone defects create a significant clinical need for tissue engineered bone strategies. This review describes how control over the spatiotemporal delivery of growth factors, nucleic acids, and drugs and small molecules may aid in recapitulating signals present in bone development and healing, regenerating interfaces of bone with other connective tissues, and enhancing vascularization of tissue engineered bone. State-of-the-art technologies used to create spatially controlled patterns of bioactive factors on the surfaces of materials, to build up 3D materials with patterns of signal presentation within their bulk, and to pattern bioactive factor delivery after scaffold fabrication are presented, highlighting their applications in bone tissue engineering. As these techniques improve in areas such as spatial resolution and speed of patterning, they will continue to grow in value as model systems for understanding cell responses to spatially regulated bioactive factor signal presentation in vitro, and as strategies to investigate the capacity of the defined spatial arrangement of these signals to drive bone regeneration in vivo.
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