Neurotensin (NTS)-po
lyp
lex is a gene nanocarrier that has potentia
l nanomedicine-based app
lications for the treatment of Parkinson's disease and cancers of ce
lls expressing NTS receptor type 1. We assessed the acute inf
lammatory response to NTS-po
lyp
lex carrying a reporter gene in BALB/c mice. The intravenous injection of NTS-po
lyp
lex caused the specific expression of the reporter gene in gastrointestina
l ce
lls. Six hours after an intravenous injection of propidium iodide
labe
led-NTS-po
lyp
lex, f
luorescent spots were
located in the ce
lls of the organs with a mononuc
lear phagocyte system, suggesting NTS-po
lyp
lex c
learance. In contrast to
lipopo
lysaccharide and carbon tetrach
loride, NTS-po
lyp
lex did not increase the serum
leve
ls of tumor necrosis factor a
lpha, inter
leukin (IL)-1尾, IL-6, bi
lirubin, aspartate transaminase, and a
lanine transaminase. NTS-po
lyp
lex increased the
leve
ls of serum amy
loid A and a
lka
line phosphatase, but these
leve
ls norma
lized after 24 h. Compared to carrageenan, the
loca
l injection of NTS-po
lyp
lex did not produce inf
lammation. Our resu
lts support the safety of NTS-po
lyp
lex.
From the Clinical Editor
This study focuses on the safety of neurotensin (NTS)-polyplex, a gene nanocarrier that has potential in the treatment of Parkinson's disease and cancers of cells expressing NTS receptor type 1. NTS polyplex demonstrates a better safety profile compared with carrageenan, lipopolysaccharide, and carbon tetrachloride in a murine model.