Namdee Katawut, Sobczynski Daniel J, Onyskiw Peter J, Eniola-Adefeso Omolola
Department of Chemical Engineering, University of Michigan , 2800 Plymouth Road, Ann Arbor, Michigan 48109, United States.
Bioconjug Chem. 2015 Dec 16;26(12):2419-28. doi: 10.1021/acs.bioconjchem.5b00474. Epub 2015 Nov 9.
Vascular-targeted carrier (VTC) interaction with human plasma is known to reduce targeted adhesion efficiency in vitro. However, the role of plasma proteins on the adhesion efficiency of VTCs in laboratory animals remains unknown. Here, in vitro blood flow assays are used to explore the effects of plasma from mouse, rabbit, and porcine on VTC adhesion. Porcine blood exhibited a strong negative plasma effect on VTC adhesion while no significant plasma effect was found with rabbit and mouse blood. A brush density poly(ethylene glycol) (PEG) on VTCs was effective at improving adhesion of microsized, but not nanosized, VTCs in porcine blood. Overall, the results suggest that porcine models, as opposed to mouse, can serve as better models in preclinical research for predicting the in vivo functionality of VTCs for use in humans. These considerations hold great importance for the design of various pharmaceutical products and development of reliable drug delivery systems.
已知血管靶向载体(VTC)与人体血浆相互作用会降低体外靶向黏附效率。然而,血浆蛋白对实验动物体内VTC黏附效率的作用仍不清楚。在此,采用体外血流试验来探究小鼠、兔子和猪的血浆对VTC黏附的影响。猪血浆对VTC黏附表现出强烈的负面作用,而兔子和小鼠血浆未发现显著的血浆效应。VTC上的刷状密度聚乙二醇(PEG)可有效提高微米级而非纳米级VTC在猪血浆中的黏附。总体而言,结果表明与小鼠模型相比,猪模型可作为更好的临床前研究模型,用于预测VTC在人体中的体内功能。这些考量对于各种药品的设计和可靠药物递送系统的开发至关重要。