Magnetic micelles for DNA delivery to rat brains after mild traumatic brain injury.
Magnetic micelles for DNA delivery to rat brains after mild traumatic brain injury.
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DOI:
10.1016/j.nano.2014.01.003
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发表时间:
2014-10
影响因子:
5.4
通讯作者:
Mohapatra, Subhra
中科院分区:
文献类型:
--
作者:
Das, Mahasweta;Wang, Chunyan;Bedi, Raminder;Mohapatra, Shyam S.;Mohapatra, Subhra
Traumatic brain injury (TBI) causes significant mortality, long term disability and psychological symptoms. Gene therapy is a promising approach for treatment of different pathological conditions. Here we tested chitosan and polyethyleneimine (PEI)-coated magnetic micelles (CPmag micelles or CPMMs), a potential MRI contrast agent, to deliver a reporter DNA to the brain after mild TBI (mTBI). CPMM - tomato plasmid (ptd) conjugate expressing a red-fluorescent protein (RFP) was administered intranasally immediately after mTBI or sham surgery in male SD rats. Evans blue extravasation following mTBI suggested CPMM-ptd entry into the brain via the compromised blood-brain barrier. Magnetofection increased the concentration of CPMMs in the brain. RFP expression was observed in the brain (cortex and hippocampus), lung and liver 48 hours after mTBI. CPMM did not evoke any inflammatory response by themselves and were excreted from the body. These results indicate the possibility of using intranasally administered CPMM as a theranostic vehicle for mTBI.
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通讯作者:
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