title: Mannosylated solid lipid nanoparticles as vectors for site-specific delivery of an anti-cancer drug.
abstract: The purpose of the present study was to investigate the tumor targeting potential of surface tailored solid lipid nanoparticles (SLNs) loaded with an anti-cancer drug doxorubicin HCl (DOX). DOX encapsulating SLNs were prepared, characterized and further mannosylated. The developed formulations were characterized by Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), particle size/polydispersity index and zeta-potential analysis. The formulations were evaluated for in vitro drug release and hemolytic toxicity. The ex vivo cytotoxicity and cellular uptake studies were performed on A549 cell lines. In vivo studies were conducted to determine pharmacokinetics, tissue distribution pattern and nephrotoxic/hepatotoxic effect of mannosylated SLNs. In vitro, the formulations exhibited a biphasic pattern characterized by initial rapid release of the drug followed by rather slow and prolonged release. Further, the in vitro studies depicted mannose-conjugated SLNs to be least hemolytic and suitable for sustained drug delivery. Mannosylated SLNs were most cytotoxic and were preferably taken up A549 tumor cells as evaluated against uncoated SLNs and plain DOX. Pharmacokinetic studies revealed improved bioavailability, half life and mean residence time of DOX upon mannose conjugation. The biodistribution pattern exhibited that mannosylated SLNs were able to deliver a higher concentration of DOX in the tumor mass. They were also proficient to circumvent damage to renal as well as hepatic tissues. It may therefore be interpreted that mannosylated SLNs are capable to ferry bioactives selectively and specifically to the tumor sites with the interception of minimal side effects, thereby suggesting their potential application in cancer chemotherapy.
authors.affiliation: Pharmaceutics Research Laboratory, Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya, Sagar, MP 470003, India.
authors.forename: Ashay
authors.initials: A
authors.lastname: Jain
authors.forename: Abhinav
authors.initials: A
authors.lastname: Agarwal
authors.forename: Saikat
authors.initials: S
authors.lastname: Majumder
authors.forename: Narendra
authors.initials: N
authors.lastname: Lariya
authors.forename: Anil
authors.initials: A
authors.lastname: Khaya
authors.forename: Himanshu
authors.initials: H
authors.lastname: Agrawal
authors.forename: Subrata
authors.initials: S
authors.lastname: Majumdar
authors.forename: Govind P
authors.initials: GP
authors.lastname: Agrawal
mesh_terms: D000818:Animals; D000903:Antibiotics, Antineoplastic / Q000008:administration & dosage* / Q000493:pharmacokinetics / Q000494:pharmacology; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D004317:Doxorubicin / Q000008:administration & dosage* / Q000493:pharmacokinetics / Q000494:pharmacology; D004337:Drug Carriers / Q000737:chemistry*; D006461:Hemolysis / Q000187:drug effects; D006801:Humans; D007668:Kidney / Q000187:drug effects; D008055:Lipids / Q000737:chemistry*; D008099:Liver / Q000187:drug effects; D008297:Male; D008358:Mannose / Q000737:chemistry*; D051379:Mice; D008807:Mice, Inbred BALB C; D053758:Nanoparticles / Q000737:chemistry*; D009369:Neoplasms / Q000188:drug therapy; D010316:Particle Size
chemical_list: D000903:Antibiotics, Antineoplastic; D004337:Drug Carriers; D008055:Lipids; D004317:Doxorubicin; D008358:Mannose