Targeting choroid plexus epithelia and ventricular ependyma for drug delivery to the central nervous system

Ana M. Gonzalez, Wendy E. Leadbeater, Michael Burg, Karen Sims, Tetsuya Terasaki, Conrad E. Johanson, Edward G. Stopa, Brian P. Eliceiri, Andrew Baird

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

Background: Because the choroid plexus (CP) is uniquely suited to control the composition of cerebrospinal fluid (CSF), there may be therapeutic benefits to increasing the levels of biologically active proteins in CSF to modulate central nervous system (CNS) functions. To this end, we sought to identify peptides capable of ligand-mediated targeting to CP epithelial cells reasoning that they could be exploited to deliver drugs, biotherapeutics and genes to the CNS.Methods: A peptide library displayed on M13 bacteriophage was screened for ligands capable of internalizing into CP epithelial cells by incubating phage with CP explants for 2 hours at 37C and recovering particles with targeting capacity.Results: Three peptides, identified after four rounds of screening, were analyzed for specific and dose dependant binding and internalization. Binding was deemed specific because internalization was prevented by co-incubation with cognate synthetic peptides. Furthermore, after i.c.v. injection into rat brains, each peptide was found to target phage to epithelial cells in CP and to ependyma lining the ventricles.Conclusion: These data demonstrate that ligand-mediated targeting can be used as a strategy for drug delivery to the central nervous system and opens the possibility of using the choroid plexus as a portal of entry into the brain.

Original languageEnglish
Article number4
JournalBMC Neuroscience
Volume12
DOIs
Publication statusPublished - 2011 Jan 7

ASJC Scopus subject areas

  • Neuroscience(all)
  • Cellular and Molecular Neuroscience

Fingerprint Dive into the research topics of 'Targeting choroid plexus epithelia and ventricular ependyma for drug delivery to the central nervous system'. Together they form a unique fingerprint.

Cite this