Article (Scientific journals)
Efficient delivery of Cre-recombinase to neurons in vivo and stable transduction of neurons using adeno-associated and lentiviral vectors.
Ahmed, Bushra Y; Chakravarthy, Sridhara; Eggers, Ruben et al.
2004In BMC Neuroscience, 5, p. 4
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Keywords :
Luminescent Proteins; Recombinant Proteins; Viral Proteins; Green Fluorescent Proteins; EC 2.7.7.- (Cre recombinase); EC 2.7.7.- (Integrases); Animals; Cell Line; Dependovirus/genetics; Gene Expression; Gene Transfer Techniques; Genes, Reporter; Genetic Vectors/administration & dosage/genetics; Hippocampus/metabolism/virology; Integrases/administration & dosage/genetics/metabolism; Lentivirus/genetics; Luminescent Proteins/biosynthesis/genetics; Mice; Mice, Transgenic; Neocortex/metabolism/virology; Neurons/metabolism/virology; Recombinant Proteins/genetics/metabolism; Recombination, Genetic/drug effects/genetics; Transgenes; Viral Proteins/administration & dosage/genetics/metabolism
Abstract :
[en] BACKGROUND: Inactivating genes in vivo is an important technique for establishing their function in the adult nervous system. Unfortunately, conventional knockout mice may suffer from several limitations including embryonic or perinatal lethality and the compensatory regulation of other genes. One approach to producing conditional activation or inactivation of genes involves the use of Cre recombinase to remove loxP-flanked segments of DNA. We have studied the effects of delivering Cre to the hippocampus and neocortex of adult mice by injecting replication-deficient adeno-associated virus (AAV) and lentiviral (LV) vectors into discrete regions of the forebrain. RESULTS: Recombinant AAV-Cre, AAV-GFP (green fluorescent protein) and LV-Cre-EGFP (enhanced GFP) were made with the transgene controlled by the cytomegalovirus promoter. Infecting 293T cells in vitro with AAV-Cre and LV-Cre-EGFP resulted in transduction of most cells as shown by GFP fluorescence and Cre immunoreactivity. Injections of submicrolitre quantities of LV-Cre-EGFP and mixtures of AAV-Cre with AAV-GFP into the neocortex and hippocampus of adult Rosa26 reporter mice resulted in strong Cre and GFP expression in the dentate gyrus and moderate to strong labelling in specific regions of the hippocampus and in the neocortex, mainly in neurons. The pattern of expression of Cre and GFP obtained with AAV and LV vectors was very similar. X-gal staining showed that Cre-mediated recombination had occurred in neurons in the same regions of the brain, starting at 3 days post-injection. No obvious toxic effects of Cre expression were detected even after four weeks post-injection. CONCLUSION: AAV and LV vectors are capable of delivering Cre to neurons in discrete regions of the adult mouse brain and producing recombination.
Disciplines :
Oncology
Author, co-author :
Ahmed, Bushra Y;  Department of Anatomy and Developmental Biology, University College London, Gower Street, London WC1E 6BT, UK. Bushra.Ahmed@ucl.ac.uk
Chakravarthy, Sridhara
Eggers, Ruben
Hermens, Wim T J M C
Zhang, Jing Ying
NICLOU, Simone P. ;  Netherlands Institute for Brain Research, Amsterdam, The Netherlands
Levelt, Christiaan
Sablitzky, Fred
Anderson, Patrick N
Lieberman, A R
Verhaagen, Joost
External co-authors :
yes
Language :
English
Title :
Efficient delivery of Cre-recombinase to neurons in vivo and stable transduction of neurons using adeno-associated and lentiviral vectors.
Publication date :
30 January 2004
Journal title :
BMC Neuroscience
eISSN :
1471-2202
Publisher :
BioMed Central, United Kingdom
Volume :
5
Pages :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 19 February 2024

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