Anti-GAD antibody targeted non-viral gene delivery to islet beta cells

作者: Ji Hoon Jeong , Minhyung Lee , Won Jong Kim , James W. Yockman , Tae Gwan Park

DOI: 10.1016/J.JCONREL.2005.07.010

关键词:

摘要: An islet cell targeting polymeric gene carrier was synthesized by conjugating anti-GAD Fab' fragment to PEI via PEG linker (PEI-PEG-Fab'). The prepared from a murine monoclonal antibody against glutamic acid decarboxylase (GAD), which has been identified as one of the major auto-antigens expressed in cells, and used moiety for targeting. electrophoretic migration plasmid DNA (pCMVLuc)/PEI-PEG-Fab' complexes agarose gel completely retarded above N/P ratio 2. demonstrated size 100-275 nm with an almost neutral surface charge. Confocal microscopy revealed that PEI-PEG-Fab' showed much higher cellular binding uptake efficiency compared PEI-PEG complexes. about 10-fold transfection (relative luciferase activity) than GAD-expressing mouse insulinoma cells (MIN6), however reduced GAD negative (293) presence competitive free Fab'. Considering charge its DNA, selectivity toward expressing specific antigen, conjugate could be thought potential candidate systemic therapy treatment type I diabetes.

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