Title:Coating Matters: Review on Colloidal Stability of Nanoparticles with Biocompatible Coatings in Biological Media, Living Cells and Organisms
Volume: 25
Issue: 35
关键词:
纳米粒子,涂层材料,胶体稳定性,生物介质,生物聚合物,聚合物涂层,蛋白质电晕
摘要: Within the last two decades, the field of nanomedicine has not developed as successfully
as has widely been hoped for. The main reason for this is the immense complexity of
the biological systems, including the physico-chemical properties of the biological fluids as
well as the biochemistry and the physiology of living systems. The nanoparticles’ physicochemical
properties are also highly important. These differ profoundly from those of freshly
synthesized particles when applied in biological/living systems as recent research in this field
reveals. The physico-chemical properties of nanoparticles are predefined by their structural
and functional design (core and coating material) and are highly affected by their interaction
with the environment (temperature, pH, salt, proteins, cells). Since the coating material is the
first part of the particle to come in contact with the environment, it does not only provide biocompatibility,
but also defines the behavior (e.g. colloidal stability) and the fate (degradation,
excretion, accumulation) of nanoparticles in the living systems. Hence, the coating matters,
particularly for a nanoparticle system for biomedical applications, which has to fulfill its task
in the complex environment of biological fluids, cells and organisms. In this review, we
evaluate the performance of different coating materials for nanoparticles concerning their
ability to provide colloidal stability in biological media and living systems.