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Atelocollagen-based gene transfer in cells allows high-throughput screening of gene functions.
Authors:K Honma  T Ochiya  S Nagahara  A Sano  H Yamamoto  K Hirai  Y Aso  M Terada
Institution:Koken Bioscience Institute, 2-13-10, Ukima, Kita-ku, Tokyo, 115-0051, Japan.
Abstract:We have previously demonstrated that Atelocollagen, used clinically for wound healing, is a reliable safe carrier for gene delivery. To obtain phenotypic changes by gene expression of cDNA, we developed an efficient technique for high-throughput gene transfer and expression screening in mammalian cells in microarrays by precoating a microplate with an Atelocollagen complexed with cDNA to which cells are then seeded. The complexes with a nanoparticle form were efficiently transduced into cells without use of any additional transfection reagent, and they allowed for long-term gene expression without apparent chromosomal integration. The complex spotted onto the well of a microplate was stable for a long period and allowed the cells to transduce and express reporter genes in a dose-dependent manner. We also showed that the present method using Atelocollagen-based gene transfer is applicable to gene medicines such as antisense ODNs and adenovirus vectors. These results suggest that Atelocollagen may be appropriate for general use in high-throughput screening of large sets of gene medicines for functional analyses in mammalian cells.
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