Q130313294 Dotaz Zobrazit nápovědu
Gene therapy is often used in clinical research. It is related to the delivery of nucleic acids and their components to patient by a vector. Most current vector techniques can be divided into viral and nonviral. Nonviral vectors, such as cationic liposomes, are less toxic, less immunogenic, and easier to prepare than viral vectors. Hence they are more attractive for clinical applications. This review focuses on the relations between the cationic lipid structure and its transfection activity. To understand the structure-activity relationships is of great importance for synthesis of novel cationic lipids.
We designed and synthesised a series of new cationic lipids based on spermine linked to various hydrophobic anchors. These lipids could be potentially useful for the preparation of stable cationic liposomes intended for the construction of drug targeting systems applicable in the field of anticancer/antiviral therapy, vaccine carriers, and vectors for the gene therapy. Low in vitro toxicity was found for these compounds, especially for LD1, in several cell lines. The delivery of both a fluorescence marker (calcein) and antiviral drugs into cells has been achieved owing to a large extent of internalization of cationic liposomes (labelled by Lyssamine-Rhodamine PE or fluorescein-PE) as demonstrated by fluorescent microscopy and quantified by flow cytometry. The bovine herpes virus type 1 (BHV-1) virus infection in vitro model using MDBK cells was employed to study the effect of the established antiviral drug HPMPC (Cidofovir®) developed by Prof. A. Holý. Inhibition of BHV-1 virus replication was studied by quantitative RT-PCR and confirmed by both Hoffman modulation contrast microscopy and transmission electron microscopy. We found that in vitro antiviral activity of HPMPC was significantly improved by formulation in cationic liposomes, which decreased the viral replication by about 2 orders of magnitude.
- MeSH
- antivirové látky aplikace a dávkování farmakologie MeSH
- bovinní herpesvirus 1 účinky léků fyziologie MeSH
- buněčné kultury MeSH
- buněčné linie MeSH
- cytopatogenní efekt virový MeSH
- cytosin aplikace a dávkování analogy a deriváty farmakologie MeSH
- fluorescenční mikroskopie MeSH
- kationty MeSH
- kvantitativní polymerázová řetězová reakce MeSH
- ledviny cytologie virologie MeSH
- lipidy chemie MeSH
- liposomy MeSH
- nosiče léků chemie MeSH
- organofosfonáty aplikace a dávkování farmakologie MeSH
- replikace viru účinky léků MeSH
- skot MeSH
- viabilita buněk účinky léků MeSH
- zvířata MeSH
- Check Tag
- skot MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
