Selective gene delivery in dendritic cells with mannosylated and histidylated lipopolyplexes

J Drug Target. 2011 Jun;19(5):315-25. doi: 10.3109/1061186X.2010.504262. Epub 2010 Jul 23.

Abstract

We report for the first time preparation of mannosylated and histidylated lipopolyplexes (Man-LPD100) with uptake and transfection selectivity for dendritic cells (DCs). Man-LPD100 were prepared by addition of mannosylated and histidylated liposomes (Man-Lip100) on preformed PEGylated histidylated polylysine/DNA polyplexes. Man-Lip100 comprised a cationic [O,O-dioleyl-N-(3N-(N-methylimidazolium iodide)propylene) phosphoramidate)] lipid, a neutral [O,O-dioleyl-N-histamine Phosphoramidate] co-lipid and β-D-mannopyranosyl-N-dodecylhexadecanamide (Man-lipid). At the best, Man-Lip100 containing 11 mol % Man-lipid was obtained. We found that dialysis of liposomes completely abolished cytotoxicity. We showed that the uptake of Man(11)-LPD100 by the murine DC line (DC2.4 cells) was at least 10-fold higher than that of Lac(6)-LPD100. A confocal microscopy study with DC2.4 cells expressing Rab5-EGFP or Rab7-EGFP, revealed that DNA uptake occurred through clathrin-mediated endocytosis. The transfection of DC2.4 cells with Man(11)-LPD100 containing DNA encoding luciferase gene gave luciferase activity two to three times higher (9 × 10(5) RLU/mg protein) than with non-mannosylated LPD100. In contrast to the latter, it was inhibited by 90% in the presence of mannose. Overall, the results indicate that mannosylated and histidylated LPD is a promising system for a selective DNA delivery in DCs.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Cell Culture Techniques
  • Cell Line
  • Cell Survival / drug effects
  • DNA / administration & dosage*
  • DNA / genetics
  • Dendritic Cells / metabolism*
  • Drug Carriers / chemistry*
  • Drug Carriers / toxicity
  • Drug Compounding
  • Endocytosis
  • Endosomes / metabolism
  • Gene Transfer Techniques*
  • Green Fluorescent Proteins / genetics
  • Histidine / chemistry*
  • Liposomes
  • Luciferases, Firefly / genetics
  • Luciferases, Firefly / metabolism
  • Mannose / chemistry*
  • Mice
  • Microscopy, Confocal
  • Particle Size
  • Plasmids
  • Transfection
  • rab GTP-Binding Proteins / genetics
  • rab5 GTP-Binding Proteins / genetics
  • rab7 GTP-Binding Proteins

Substances

  • Drug Carriers
  • Liposomes
  • enhanced green fluorescent protein
  • rab7 GTP-Binding Proteins
  • rab7 GTP-binding proteins, mouse
  • Green Fluorescent Proteins
  • Histidine
  • DNA
  • Luciferases, Firefly
  • rab GTP-Binding Proteins
  • rab5 GTP-Binding Proteins
  • Mannose