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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Metastatic prostate cancer cell-specific phage-like particles as a targeted gene-delivery system
Journal of Nanobiotechnology, Volume 11, No. 1, Article 31, Year 2013
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Description
Background: One of the cardinal requirements for effective therapeutic management of tumors is the selective delivery of cancer drugs to the right site by ligand-decorated nanomedicines. Screening of 2 × 109 clone landscape phage library provides a reliable avenue for generating protein ligands specific for tumor cells. It was shown that selective phage proteins derived from landscape phage libraries against breast and prostate cancer cells are able to navigate drug or siRNA loaded liposomes to corresponding cancer cells with minimal toxicity to non-neoplastic cells. In an alternative platform, glioma cell-specific phage proteins were used for assembling in vivo cancer-specific phage-like particles, named 'phagemid infective particles' as targeted gene-delivery vehicles.Methods: To extend the panel of anticancer cell phages, we have screened a 2 × 109 clone landscape phage library f8/8 to select phage clones specific for metastatic prostate cancer cell PC-3M. The phage clones were characterized for their selective interaction with PC-3M cells using phage capture assay, immunofluorescence microscopy and electron microscopy. A prostate cancer selective phage was converted to phage-like particles harboring emerald green fluorescent protein.Results: Phage clone EPTHSWAT (designated by the sequence of inserted peptide) was found to be most selective for PC-3M cells and was observed to internalize PC-3M cells as revealed by immunofluorescence microscopy and electron microscopy. Conversion of this phage to phage-like particles harboring emerald green fluorescent protein and the expression of emerald green fluorescent protein in the phage-like particles treated PC-3M cells showed potential of adoption of this phage-like particle in prostate cancer therapeutic gene delivery.Conclusion: Successful employment of phage-like particles expressing emerald green fluorescent protein genes targeted to prostate cancer cells PC-3M confirms a prospect of their use for targeted delivery of therapeutic genes to cancer cells. © 2013 Fagbohun et al.; licensee BioMed Central Ltd.
Authors & Co-Authors
Fagbohun, O. A.
United States, Columbia
Cancer Research Center
United States, Columbia
University of Missouri
Nigeria, Ibadan
University of Ibadan
Kazmierczak, Robert A.
United States, Columbia
Cancer Research Center
United States, Columbia
University of Missouri
Petrenko, Valery A.
United States, Montgomery
Auburn University at Montgomery
Eisenstark, Abraham
United States, Columbia
Cancer Research Center
United States, Columbia
University of Missouri
Statistics
Citations: 13
Authors: 4
Affiliations: 4
Identifiers
Doi:
10.1186/1477-3155-11-31
e-ISSN:
14773155
Research Areas
Cancer
Genetics And Genomics