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| TH-Cre transgenic mice have the rat tyrosine hydroxylase (TH) promoter directing expression of Cre recombinase to catecholaminergic cells, and may be useful for generating conditional mutations in these cells for studying dopaminergic cell function, Parkinson's disease, and other neurodegenerative disorders. | |||||||||||||||
Type Congenic; Transgenic; Additional information on Genetically Engineered and Mutant Mice. Visit our online Nomenclature tutorial. Additional information on Congenic nomenclature. Mating System Noncarrier x Hemizygote (Female x Male) 09-JUN-09 Species laboratory mouse Generation N6+ (08-JUN-09) Donating Investigator Ted Dawson, Johns Hopkins Univ School of Medicine Description
Mice hemizygous for the TH-Cre transgene are viable and fertile, with the rat tyrosine hydroxylase (TH) promoter directing expression of Cre recombinase to catecholaminergic cells. Using crosses to reporter strains, cre activity is confirmed in catecholaminergic cells and is present in many of the projection areas of these neuronal populations. A mosaic of cre activity is noted in TH-positive neurons. Several other areas that are not typically thought to have active TH expression, including the lateral septal nucleus, accessory olfactory bulb, suparafascicular thalamus, and pretectal area, also exhibit Cre recombinase activity (possibly as a result of TH promoter activity in precursor cell populations or ectopic expression from the exogenous TH promoter). Some TH-negative cells closely clustered around and within TH-positive nuclei demonstrate cre activity. When bred with mice containing a loxP-flanked sequence of interest, Cre-mediated recombination will result in deletion of the floxed sequence(s) in the offspring. These TH-Cre transgenic mice are a tool for generating conditional mutations in catecholaminergic cells and may be useful for studying dopaminergic cell function, Parkinson's disease, and other neurodegenerative disorders.Development
The TH-Cre transgene was designed with a 9.0 kb fragment of the rat tyrosine hydroxylase (TH) promoter, synthetic 5' UTR intron, cre cDNA, and SV40 late region polyadenylation site. The transgene was microinjected into the pronuclei of fertilized B6/SJLF2 oocytes. Chimeric mice were bred to C57BL/6NCrl to confirm germline transmission and establish founder line 1 (TH-Cre 1). The resulting TH-Cre 1 transgenic mice were subsequently maintained by backcrossing to C57BL/6NCrl mice for greater than 5 generations prior to arrival at The Jackson Laboratory Repository. Upon arrival, transgenic mice were bred to C57BL/6NJ inbred mice (Stock No. 005304) to establish the colony.
| Control | ||
|---|---|---|
| Noncarrier | ||
| 005304 C57BL/6NJ | (approximate) | |
| Considerations for Choosing Controls | ||
Strains carrying other alleles of Th
008750 B6.Cg-Tg(Th-Oprm1)4Jtw/J View Strains carrying other alleles of Th (1 strain)
Strains carrying other alleles of cre
View Strains carrying other alleles of cre (162 strains)
Introduction to Cre-lox technology
View Research Applications
Research Applications
This mouse can be used to support research in many areas including:
cre relatedNeurobiology Research
Cre-lox System
Cre Recombinase expression in neural tissue
Parkinson's Disease
strains expressing cre
Research Tools
Cre-lox System
Cre Recombinase Expression
Genetics Research
Mutagenesis and Transgenesis: Cre-lox System
Tissue/Cell Markers: Cre-lox System
Research Tools
Cre-lox System
Genetics Research
Mutagenesis and Transgenesis: Cre-lox System
| Allele Symbol | Tg(Th-cre)1Tmd | ||
|---|---|---|---|
| Allele Name | transgene insertion 1, Ted M Dawson | ||
| Allele Type | Transgenic (Cre/Flp) | ||
| Common Name(s) | TH-cre; | ||
| Mutation Made By | Ted Dawson, Johns Hopkins Univ School of Medicine | ||
| Strain of Origin | (C57BL/6 x SJL)F2 | ||
| Site of Expression | dopaminergic neurons | ||
| Expressed Gene | cre, cre recombinase, bacteriophage P1 | ||
| Cre recombinase is an enzyme derived from the bacteriophage P1 that specifically recognizes loxP sites. Cre has been shown to effectively mediate the excision of DNA located between loxP sites. After the excision event, the DNA ends recombine leaving a single loxP site in place of the intervening sequence. | |||
| Promoter | Th, tyrosine hydroxylase, rat | ||
| Driver Note | Th | ||
| Molecular Note | Cre recombinase is expressed under the control of the rat tyrosine hydroxylase promoter. Cre recombinase activity is detected in catecholaminergic cells. This is a representative record representing TH-cre1 - TH-cre5 all of which have identical activity.The authors state that TH-cre4 appears to be X-linked. [MGI Ref ID J:99848] | ||
| Gene Symbol and Name | Tg(Th-cre)1Tmd, transgene insertion 1, Ted M Dawson | ||
| Chromosome | UN | ||
| Gene Common Name(s) | TH-cre; | ||
Genotyping Protocols
Generic Cre Melt Curve Analysis, Melt Curve Analysis
Helpful Links
Genotyping resources and troubleshooting
Savitt JM; Jang SS; Mu W; Dawson VL; Dawson TM. 2005. Bcl-x is required for proper development of the mouse substantia nigra. J Neurosci 25(29):6721-8. [PubMed: 16033881] [MGI Ref ID J:99848]
Daher JP; Ying M; Banerjee R; McDonald RS; Dumas Hahn M; Yang L; Beal MF; Thomas B; Dawson VL; Dawson TM; Moore DJ. 2009. Conditional transgenic mice expressing C-terminally truncated human alpha-synuclein (alphaSyn119) exhibit reduced striatal dopamine without loss of nigrostriatal pathway dopaminergic neurons. Mol Neurodegener 4(1):34. [PubMed: 19630976] [MGI Ref ID J:150777]
Tg(Th-cre)1Tmd relatedDaher JP; Ying M; Banerjee R; McDonald RS; Dumas Hahn M; Yang L; Beal MF; Thomas B; Dawson VL; Dawson TM; Moore DJ. 2009. Conditional transgenic mice expressing C-terminally truncated human alpha-synuclein (alphaSyn119) exhibit reduced striatal dopamine without loss of nigrostriatal pathway dopaminergic neurons. Mol Neurodegener 4(1):34. [PubMed: 19630976] [MGI Ref ID J:150777]
Colony Maintenance
Breeding & Husbandry When maintaining a live colony, hemizygous mice may be bred to wildtype (noncarrier) siblings or to C57BL/6NJ (Stock No. 005304) inbred mice. The donating investigator reports that homozygous mice are viable. Mating System Noncarrier x Hemizygote (Female x Male) 09-JUN-09 Diet Information LabDiet® 5K52/5K67
This strain is currently Under Development for Production.
To register your interest in this strain go to the Strain Interest Form.
Estimated Available for Sale Date: 21-DEC-09
Please note: Estimated available for sale dates are provided to keep customers better informed on strains under development. Please note that our Colony Managers routinely monitor the target date and edit it based on breeding performance and other factors. The length of time it takes to make a new strain available for sale depends on genotype, age, number of animals sent by the Donating Investigator, breeding performance, additional strain development (backcrossing, making homozygous), and anticipated demand for the strain/interest registered.
View All Strains Under Development and On Hold
| Standard Supply | Under Development for Distribution Colony |
|---|---|
| Supply Notes |
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| Control | ||
|---|---|---|
| Noncarrier | ||
| 005304 C57BL/6NJ | (approximate) | |
| Considerations for Choosing Controls | ||
| USA, Canada and Mexico - Control Pricing Information for Genetically Engineered Mutant Strains. | ||
| International - Control Pricing Information for Genetically Engineered Mutant Strains. | ||
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