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Jakob Reiser

Publications and source records attributed to Jakob Reiser.

4 recordsLinked to original sources
PubMed2003

Dopaminergic trophism after intrastriatal injection of lentivirus-transferred GDNF in Parkinson rat model.

To investigate the effects of lentivirus-mediated transfection of GDNF on Parkinson s disease (PD). The pNL-gdnf plasmid was constructed by replacing the LacZ-coding region present in pNL-lacZ/CMV. Vector particles involved a three-plasmid lentivirus expression system were co-transferred into 293T cells through calcium phosphate method. High-titer virus was collected from infected 293T cells and injected into lesion-side striatum of PD rats, and their apomorphine-induced rotations were assayed at day 14, 30 and 60, respectively. GDNF protein was detected by Western blot analysis, and the expression of lacZ and TH were detected by immunochemistry. Results showed that behavioral recovery gradually appeared after transplantation, and a significant reduction in the rotational response was observed at the 14th day. Meanwhile, gdnf expression maintained for at least 60 d, which had dopaminergic trophism to a certain degree, indicating that lentivirus-mediated transfection gdnf could effectively improve the clinical function of PD rats, which provide a potential attractive tool of gene therapy for PD.

Animals↗
PubMed2002

Lentiviral vectors for sustained transgene expression in human bone marrow-derived stromal cells.

Bone marrow-derived mesenchymal stromal cells (MSCs) have attracted attention as potential platforms for the systemic delivery of therapeutic proteins in vivo following gene transfer using oncogenic retroviruses. However, the major limitations of this strategy include low levels of gene transfer and a general lack of long-term transgene expression. We have investigated the expression of several transgenes in MSCs following HIV-1 lentiviral vector-mediated gene transfer. Vectors containing a variety of strong promoters driving enhanced green fluorescence protein (EGFP) and coral (Discosoma sp.)-derived red fluorescent protein (DsRed) reporter genes pseudotyped with the vesicular stomatitis virus-G (VSV-G) glycoprotein were able to transduce cultured MSCs with high efficiency. Transduction efficiencies and transgene expression levels in MSCs were found to be higher with lentiviral vectors than with a vector based on the murine stem cell virus pseudotyped with VSV-G. Transgene expression was maintained in culture for at least 5 months. HIV-1-based lentiviral vectors were able to transduce clonogenic mesenchymal progenitor cells, which were capable of maintaining transgene expression by their MSC progeny, over several cell divisions and during differentiation into adipocytes, indicating that terminal adipocyte cell differentiation was unaffected by lentivirus-mediated reporter gene transfer. Collectively these results suggest that lentivirus-mediated gene transfer strategies provide an efficient tool for ex vivo modification of MSCs that does not interfere with differentiation.

Bone Marrow Cells↗