These mice contain loxP sites on either side of exon 23 of the Dicer1 gene. Cre-mediated recombination in the germline leads to developmental arrest. Mutant mice can be used to generate cell/tissue-specific deletions of the endogenous gene for applications in embryonic development, translation, protein processing and miRNA/siRNA regulation of gene expression.
Brian D Harfe, University of Florida
These mice contain loxP sites on either side of exon 23. Homozygous mice are viable and fertile with no gross phenotypic or behavioral abnormalities. Expression of the targeted allele is indistinguishable from wild-type despite the frt-flanked neomycin cassette. Cre-mediated recombination (resulting in deletion of exon 23) in the germline leads to developmental arrest at embryonic day 7.5 (E7.5). Tissue specific deletion has been shown to result in loss of microRNA (miRNA) processing. Mutant mice can be used to generate cell/tissue-specific deletions of the endogenous gene for applications in embryonic development, translation, protein processing and miRNA/siRNA regulation of gene expression.
For example, when crossed to a strain expressing Cre recombinase in mesenchyme (see Stock No. 005584), this mutant mouse strain may be useful in studies of limb morphogenesis.
When bred to a strain expressing Cre recombinase in the neural tube (see Stock No. 009107 for example), this mutant mouse strain may be useful in studies of DiGeorge syndrome, miRNA biogenesis and neural crest cell development.
When bred to a strain expressing Cre recombinase in the distal posterior region of E10-E12 embryos (see Stock No. 005622 for example), this mutant mouse strain may be useful in studies of lung epithelial morphogenesis.
When bred to a strain expressing Cre recombinase in Foxp3+ cells from the lymph nodes, spleen and thymus (see Stock No. 23161 for example), this mutant mouse strain may be useful in studies of miRNA and the function of T reg cells.
When bred to a strain expressing Cre recombinase in Foxp3+ regulatory T cells (Foxp3tm4(YFP/cre)Ayr; see Stock No. 016959 for example), this mutant mouse strain may be useful in studies inflammation and the function of T reg cells.
In an attempt to offer alleles on well-characterized or multiple genetic backgrounds, alleles are frequently moved to a genetic background different from that on which an allele was first characterized. It should be noted that the phenotype could vary from that originally described. We will modify the strain description if necessary as published results become available.
A targeting vector was used to flank exon 23 (encoding most of the second RNaseIII domain) of the endogenous gene with loxP sites. The vector also contained an frt-flanked neomycin resistance cassette between the exon and downstream loxP site. This construct was electroporated into "129" embryonic stem (ES) cells. Correctly targeted cells were injected into C57BL/6J blastocysts and chimeric mice were bred to C57BL/6J for germline transmission. Heterozygous offspring were bred to generate homozygotes. At some point, homozygotes were bred to mutant Gt(ROSA)26Sor mice on an unknown background. Upon arrival at The Jackson Laboratory, mice on the mixed genetic background were bred to select for the "Dicer-flox" allele and against the Gt(ROSA)26Sor reporter allele, resulting in Stock No. 006001. Mice from that colony were subsequently backcrossed to C57BL/6J for at least five generations to create these mice (Stock No. 006366).
|Allele Name||targeted mutation 1, Brian D Harfe|
|Allele Type||Targeted (Conditional ready (e.g. floxed), No functional change)|
|Allele Synonym(s)||Dcrflox; Dcrfx; Dicer1fl; Dicerflox; Dicerlox; dicerfl|
|Gene Symbol and Name||Dicer1, dicer 1, ribonuclease type III|
|Gene Synonym(s)||1110006F08Rik; 1110006F08Rik; D12Ertd7e; D12Ertd7e; DCR1; DNA segment, Chr 12, ERATO Doi 7, expressed; Dicer; Dicer1, Dcr-1 homolog (Drosophila); Dicer1e; HERNA; K12H4.8-LIKE; MNG1; RIKEN cDNA 1110006F08 gene; RMSE2; mKIAA0928|
|Strain of Origin||129|
|Mutations Made By|| |
Brian D. Harfe and Mike McManus, UFlorida and UCSF
When maintaining a live colony, mutant mice can be bred to C57BL/6J or bred together to create a homozygous colony.
The average number of mice provided from recovery of our cryopreserved strains is 10. The total number of animals provided,
their gender and genotype will vary. We will fulfill your order by providing at least two pair of mice, at least one animal of
each pair carrying the mutation of interest. Please inquire if larger numbers of animals with specific genotype and genders
are needed. Animals typically ship between 10 and 14 weeks from the date of your order. If a second cryorecovery is needed in
order to provide the minimum number of animals, animals will ship within 25 weeks.
The genotypes of animals provided may not reflect the mating scheme utilized by The Jackson Laboratory prior to cryopreservation, or that discussed in the strain description. Please inquire about possible genotypes which will be recovered for this specific strain. The Jackson Laboratory cannot guarantee the reproductive success of mice shipped to your facility. If the mice are lost after the first three days (post-arrival) or do not produce progeny at your facility, a new order and fee will be necessary.
Cryorecovery to establish a Dedicated Supply for greater quantities of mice. Mice recovered can be used to establish a dedicated colony to contractually supply you mice according to your requirements. Price by quotation.
Terms are granted by individual review and stated on the customer invoice(s) and account statement. These transactions are payable in U.S. currency within the granted terms. Payment for services, products, shipping containers, and shipping costs that are rendered are expected within the payment terms indicated on the invoice or stated by contract. Invoices and account balances in arrears of stated terms may result in The Jackson Laboratory pursuing collection activities including but not limited to outside agencies and court filings.
The Jackson Laboratory has rigorous genetic quality control and mutant gene genotyping programs to ensure the genetic background of JAX® Mice strains as well as the genotypes of strains with identified molecular mutations. JAX® Mice strains are only made available to researchers after meeting our standards. However, the phenotype of each strain may not be fully characterized and/or captured in the strain data sheets. Therefore, we cannot guarantee a strain's phenotype will meet all expectations. To ensure that JAX® Mice will meet the needs of individual research projects or when requesting a strain that is new to your research, we suggest ordering and performing tests on a small number of mice to determine suitability for your particular project.
"MICE" means mouse strains, their progeny derived by inbreeding or crossbreeding, unmodified derivatives from mouse strains or their progeny supplied by The Jackson Laboratory ("JACKSON"). "PRODUCT(S)" means biological materials supplied by JACKSON, and their derivatives. "SERVICES" means projects conducted by JACKSON for other parties that may include but are not limited to the use of MICE or PRODUCTS. "RECIPIENT" means each recipient of MICE, PRODUCTS, or SERVICES provided by JACKSON including each institution, its employees and other researchers under its control. MICE or PRODUCTS shall not be: (i) used for any purpose other than internal research, (ii) sold or otherwise provided to any third party for any use, or (iii) provided to any agent or other third party to provide breeding or other services. Acceptance of MICE, PRODUCTS or SERVICES from JACKSON shall be deemed as agreement by RECIPIENT to these conditions, and departure from these conditions requires JACKSON’s prior written authorization.
MICE, PRODUCTS AND SERVICES ARE PROVIDED "AS IS". JACKSON EXTENDS NO WARRANTIES OF ANY KIND, EITHER EXPRESS, IMPLIED, OR STATUTORY, WITH RESPECT TO MICE, PRODUCTS OR SERVICES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY WARRANTY OF NON-INFRINGEMENT OF ANY PATENT, TRADEMARK, OR OTHER INTELLECTUAL PROPERTY RIGHTS.
In case of dissatisfaction for a valid reason and claimed in writing by a purchaser within ninety (90) days of receipt of, PRODUCTS or SERVICES, JACKSON will, at its option, provide credit or replacement for the PRODUCT received or the SERVICES provided; JACKSON makes no other representations and this shall be the exclusive remedy of the purchaser. Please note specific policy for live mice.
Consistent with the requirement for a written understanding regarding animal care and use, the JACKSON Animal Care and Use Committee will review the animal care and use protocol(s) associated with any SERVICES to be performed at JACKSON, and JACKSON shall have ultimate responsibility and authority for the care of animals while on site or in JACKSON custody.
In no event shall JACKSON, its trustees, directors, officers, employees, and affiliates be liable for any causes of action or damages, including any direct, indirect, special, or consequential damages, arising out of the provision of MICE, PRODUCTS, or SERVICES, including economic damage or injury to property and lost profits, and including any damage arising from acts or negligence on the part of JACKSON, its agents or employees. Unless prohibited by law, in purchasing or receiving MICE, PRODUCTS, or SERVICES from JACKSON, purchaser or recipient, or any party claiming by or through them, expressly releases and discharges JACKSON from all such causes of action or damages, and further agrees to defend and indemnify JACKSON from any costs or damages arising out of any third party claims.
MICE, PRODUCTS or SERVICES are to be used in a safe manner and in accordance with all applicable governmental rules and regulations.
The foregoing represents the General Terms and Conditions applicable to JACKSON’s MICE, PRODUCTS or SERVICES. In addition, special terms and conditions of sale of certain MICE, PRODUCTS, or SERVICES may be set forth separately in JACKSON web pages, catalogs, price lists, contracts, and/or other documents, and these special terms and conditions shall also govern the sale of these MICE, PRODUCTS and SERVICES by JACKSON, and by its licensees and distributors.
Acceptance of delivery of MICE, PRODUCTS or SERVICES shall be deemed agreement to these terms and conditions. No purchase order or other document transmitted by purchaser or recipient that may modify the terms and conditions hereof, shall be in any way binding on JACKSON, and instead the terms and conditions set forth herein, including any special terms and conditions set forth separately, shall govern the sale of MICE, PRODUCTS or SERVICES by JACKSON.