Galactosylated gelatin nanovectors of doxorubicin inhibit cell proliferation and induce apoptosis in hepatocarcinoma cells.

Abstract:

:We have synthesized and characterized doxorubicin (DOX)-loaded galactosylated gelatin nanovectors using in vitro and in vivo for targeting liver cells including hepatocarcinoma cells. Galactosylated and nongalactosylated gelatin nanovectors (GL-GN-DOX and GN-DOX) were spherical in shape and had mean sizes of about 95.1 and 88.3 nm, respectively. In-vitro release of DOX from nanovectors followed first-order kinetics and was pH dependent. Galactosylated formulation released 95.2% of DOX compared with 86.6% by nongalactosylated formulation at pH 5.8. However, the release rate was suppressed at pH 7.4. Further, we showed that GL-GN-DOX had greater growth inhibitory effect on HepG2 in terms of low inhibitory concentration (IC(50); 0.35 µg/ml) compared with GN-DOX (0.75 µg/ml) and induced caspase-3-mediated apoptosis in HepG2 cells. This might be due to efficient internalization of galactosylated nanovectors by HepG2 cells compared with unmodified formulation. Pharmacokinetic and biodistribution analyses show that galactosylated formulation deposits 24.5 µg/g of DOX in targeted tissue (liver) in comparison with heart (0.3 µg/g) at a single dose of 10 mg/kg. These results suggest that DOX-loaded galactosylated gelatin nanovectors warrant future in-depth antitumor study to scale-up technology and may be used for the management of hepatocarcinoma.

journal_name

Anticancer Drugs

journal_title

Anti-cancer drugs

authors

Garg M,Madan J,Pandey RS,Sardana S,Katyal A,Chandra R

doi

10.1097/CAD.0b013e328351424f

subject

Has Abstract

pub_date

2012-09-01 00:00:00

pages

836-45

issue

8

eissn

0959-4973

issn

1473-5741

journal_volume

23

pub_type

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