Innate immunity activation on biomaterial surfaces: a mechanistic model and coping strategies.

Innate immunity activation on biomaterial surfaces: a mechanistic model and coping strategies.
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DOI:
10.1016/j.addr.2011.06.012
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发表时间:
2011-09-16
影响因子:
16.1
通讯作者:
Nilsson, Bo
Nilsson, Bo
中科院分区:
医学1区
文献类型:
--
作者:
Ekdahl, Kristina N.;Lambris, John D.;Elwing, Hans;Ricklin, Daniel;Nilsson, Per H.;Teramura, Yuji;Nicholls, Ian A.;Nilsson, Bo

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当一种人造生物材料(例如支架或可植入泵)暴露于血液中时,血浆蛋白会立即附着在其表面,在生物材料和血液之间形成一个新的界面。血液中的补体以及接触激活/凝血级联系统中的识别蛋白将会结合到这个蛋白膜上,或者插入其中,并产生不同的介质,这些介质会激活多形核白细胞、单核细胞以及血小板。在临床条件下,这些过程的最终结果可能是血栓和炎症反应,因此在表面形成的初始层中蛋白质的组成和构象将在很大程度上决定涉及该生物材料的治疗结果,影响材料的功能性以及患者的生活质量。这篇综述介绍了生物材料诱导的激活过程的模型,并描述了通过将生物活性分子结合到表面或引入纳米结构来减轻潜在不良反应的各种策略。
When an artificial biomaterial (e.g., a stent or implantable pump) is exposed to blood, plasma proteins immediately adhere to the surface, creating a new interface between the biomaterial and the blood. The recognition proteins within the complement and contact activation/coagulation cascade systems of the blood will be bound to, or inserted into, this protein film and generate different mediators that will activate polymorphonuclear leukocytes and monocytes, as well as platelets. Under clinical conditions, the ultimate outcome of these processes may be thrombotic and inflammatory reactions, and consequently the composition and conformation of the proteins in the initial layer formed on the surface will to a large extent determine the outcome of a treatment involving the biomaterial, affecting both the functionality of the material and the patient’s life quality. This review presents models of biomaterial-induced activation processes and describes various strategies to attenuate potential adverse reactions by conjugating bioactive molecules to surfaces or by introducing nanostructures.
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