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- W2007506390 abstract "To establish an efficient method of transferring the human brain-derived neurotrophic-factor (hBDNF) gene into human iris pigment epithelial (hIPE) cells by using recombinant adeno-associated virus type 2 (rAAV2).Cultured hIPE cells were treated with either hydroxyurea-sodium butyrate (HUSB; DNA synthesis inhibitor), or tyrphostin-1 (Tyr; epidermal growth factor receptor [EGFR] tyrosine kinase inhibitor), or a combination of HUSB and Tyr (HUSB-Tyr). After each treatment, cells were exposed to rAAV2 (rAAV-LacZ or rAAV-hBDNF). The levels of BDNF were measured by ELISA and also determined by Western blot analysis. Southern blot analysis was performed on each type of treated cell. The neuroprotective effect of BDNF on the retinal ganglion cells (RGCs) was quantitatively assessed by culturing rAAV-hBDNF-hIPE with RGCs.The infection of hIPE cells was significantly lower than ARPE and HT1080 cells, which are highly permissive cells for rAAV2. The treatment of HUSB-Tyr enhanced the transgene expression more than that after treatment with one of these agents in rAAV-hIPE cells. Southern hybridization revealed that the amount of replicative form monomer (RFm) was less in Tyr than in HUSB or HUSB-Tyr treatment and there was no difference in conversion of virus genome to double stranded form after HUSB and HUSB-Tyr treatment. However, adding Tyr treatment stimulated the JNK1/2 and p38 pathways and modified the target transgene expression. BDNF had a significantly greater rescue effect of RGCs with the HUSB-Tyr-treated rAAV-hBDNF-hIPE cells (P < 0.01) than that with the HUSB-treated rAAV-hBDNF-hIPE cells (P > 0.05) compared with noninfected hIPE cells.The combined treatment of HUSB-Try is an effective method of increasing transgene expression with the AAV-mediated gene transfer. The role of HUSB and Tyr in the increase of gene expression may be different and related to the conversion of virus into the host genome and the enhancement of the transcription, respectively." @default.
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- W2007506390 date "2005-09-01" @default.
- W2007506390 modified "2023-10-16" @default.
- W2007506390 title "Establishment of Effective Methods for Transducing Genes into Iris Pigment Epithelial Cells by Using Adeno-associated Virus Type 2" @default.
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- W2007506390 doi "https://doi.org/10.1167/iovs.04-1351" @default.
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