These double knock-out mutant mice have no mature T or B lymphocytes, no detectable NK cell cytotoxic activity, and lack serum immunoglobulin. They also develop thymic lymphomas.
Dr. Leonard D. Shultz, The Jackson Laboratory
Mice that are homozygous for both targeted mutations are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities when housed under specific pathogen free conditions. These double homozygote mutant mice have no mature T or B lymphocytes, no detectable NK cell cytotoxic activity, and lack serum immunoglobulin. The number of nucleated spleen cells is significantly reduced in double mutant mice, when compared to the single homozygote, NOD.129S7(B6)-Rag1tm1Mom/J (Stock No. 003729). Although an increased number of DX5+CD122+ NK cells are found in the spleens of double mutants, these NK cells have impaired cytotoxic activity. The disruption of Prf1 ablates NK cell cytotoxic activity resulting in increased engraftment levels over that observed with Stock No. 003729. All mutant mice develop thymic lymphomas. This double mutant mouse strain may be useful in studies involving engraftment of human hematolymphoid cells.
Please see strain entries Stock No. 002407 and Stock No. 003729 for details regarding the construction of each mutant allele. This strain was produced by crossing female NOD.129S7(B6)-Rag1tm1Mom/J (Stock No. 003729) to male C57BL/6-Prf1tm1Sdz (Stock No. 002407). Resulting female progeny heterozygous for both mutant alleles were crossed to male NOD.129S7(B6)-Rag1tm1Mom/J (Stock No. 003729). Mice homozygous for the Rag1 mutant allele and heterozygous for the Prf1 allele were crossed to NOD.129S7(B6)-Rag1tm1Mom/J (Stock No. 003729) mice for 10 generations, and then intercrossed to produce double homozygotes.
|Allele Name||targeted mutation 1, Peter Mombaerts|
|Allele Type||Targeted (Null/Knockout)|
|Allele Synonym(s)||Rag-; Rag1tm1Mom; RAG-1-; Rag1-; RAG1null; Rag-1KO|
|Gene Symbol and Name||Rag1, recombination activating gene 1|
|Site of Expression||expression is seen in bone marrow derived cell lines.|
|Strain of Origin||129S7/SvEvBrd-Hprt+|
|Molecular Note||A 1356 bp genomic fragment of the Rag1 gene, encoding the nuclear localization signal and the zinc-finger motif, was replaced by a neomycin cassette. A mutant transcript expressed from this allele was detected by Northern blot in bone marrow derived cell lines from homozygous mice.|
|Mutations Made By|| |
Peter Mombaerts, Max Planck Research Unit for Neurogenetics
|Allele Name||targeted mutation 1, Sandoz Pharmaceuticals|
|Allele Type||Targeted (Null/Knockout)|
|Allele Synonym(s)||P0; perf-; perforin-; perforin 0; Pfn-; pfp-; Pfptm1Sdz; pfpKO; pko; Prf-; Prf1-; Prf1tm/Sdz; prf1tm1|
|Gene Symbol and Name||Prf1, perforin 1 (pore forming protein)|
|Strain of Origin||C57BL/6J|
|Molecular Note||A neomycin selection cassette was inserted into exon 3. RT-PCR analysis on RNA derived from homozygous mice demonstrated that an abnormal transcript was produced from this allele. However, immunocytochemistry experiments on activated spleen cells derived from homozygous mice confirmed that no detectable protein was made from this allele.|
|Mutations Made By|| |
Dr. Birgit Lederman, University of Zurich
This strain is maintained as a homozygote for both mutant alleles, under specific pathogen free conditions.
When using the NOD/LtSz-Rag1nullPfpnull mouse strain in a publication, please cite the originating article(s) and include JAX stock #004848 in your Materials and Methods section.
"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.