期刊
ACS CHEMICAL NEUROSCIENCE
卷 11, 期 2, 页码 197-204出版社
AMER CHEMICAL SOC
DOI: 10.1021/acschemneuro.9b00597
关键词
Superparamagnetic iron oxide nanoparticles; chondroitin sulfate; substantia nigra; neuron cell membranes; distribution
资金
- National Natural Science Foundation of China [51562007]
Localizing nanoparticles on or near cell membranes in vivo remains a big challenge. We present a cell membrane targeting complex based on chondroitin sulfate (CS)-conjugated superparamagnetic iron oxide nanoparticles (CS-SPIONs). After SPIONs were injected into the substantia nigra of rats, the subcellular distributions of SPIONs with and without CS modification have been evaluated by transmission electron microscopy (TEM) analysis. CS-SPIONs exhibited low toxicity and low endocytosis and were highly distributed in the extracellular spaces nearing neuronal cell bodies and synapses. This can be attributed to the nature of CS, one of the main components of perineuronal nets with the tendency to surround neuronal cell bodies, dendrites, and synapses. It is expected that CS-SPIONs have a great potential for therapies requiring targeting of or approach to cell membranes.
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