Mice homozygous for this Fc epsilon RI alpha chain targeted mutation have an abnormal type I hypersensitivity reaction and may be useful in studies of anaphylaxis, and immunological response to allergens.
IMR Colony, The Jackson Laboratory
Mice that are homozygous for the targeted mutation are viable, fertile, normal in size and do not display any gross physical or behavioral abnormalities. Cultured bone marrow-derived mast cells from homozygotes, that have been activated with interleukin-3, do not bind to monomeric IgE as analyzed by flow cytometry. Mice homozygous for the mutant allele are resistant to IgE induced passive cutaneous and systemic anaphylaxis and are more susceptible to IgG1-dependent passive and active systemic anaphylaxis treatments.
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. This is the case for the strain above. 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.
For the Fcer1atm1Knt allele, a targeting vector containing neomycin resistance and herpes simplex virus thymidine kinase genes was used to disrupt exon 4, which encodes an immunoglobulin domain. The construct was electroporated into 129S2/SvPas derived D3 embryonic stem (ES) cells. Correctly targeted ES cells were injected into C57BL/6 blastocysts. The resulting chimeric animals were crossed to BALB/cJ mice, and then backcrossed to the same for 20 generations. The mice were then crossed to transgenic mice carrying Tg(FCER1A)1Bhk. This double mutant was backcrossed to C57BL/6 for more than 8 generations.
The double mutant B6.Cg-Fcer1atm1Knt Tg(FCER1A)1Bhk/J strain arrived at The Jackson Laboratory (as Stock No. 010506). Upon arrival, some mice were selectively bred with C57BL/6J inbred mice (Stock No. 000664) to remove the transgene and harbor only the Fcer1atm1Knt mutation (Stock No. 010512).
|Allele Name||targeted mutation 1, Jean-Pierre Kinet|
|Allele Type||Targeted (Null/Knockout)|
|Allele Synonym(s)||Fc epsilon RI alpha chain-; FcepsilonR1alpha-; FcepsilonRI-; Fcer1a-; Fcer1atm1Rav; FcerIa-|
|Gene Symbol and Name||Fcer1a, Fc receptor, IgE, high affinity I, alpha polypeptide|
|Gene Synonym(s)||FCE1A; Fc epsilon high affinity receptor alpha; FcERI; Fce1a; Fce1a; Fcr-5; Fcr-5; Iger01; RATIGER01|
|Strain of Origin||129|
|General Note||ES cell line = D3 (129S2/SvPas) or E14TG2a (129P2/OlaHsd).|
|Molecular Note||Exon 4, encoding an immunoglobulin domain, was disrupted by the insertion of a neomycin selection cassette. The absence of a functional encoded protein on the cell surface was determined by fluorescence activated cell sorting analysis of bone marrow mast cells obtained from homozygous mutant mice.|
|Mutations Made By|| |
Devin Turner, Beth Israel Deaconess Medical Center
When maintaining Fcer1atm1Knt mutant mice as a live colony, homozygous mice may be bred together.
When using the B6.129S2(Cg)-Fcer1atm1Knt/J mouse strain in a publication, please cite the originating article(s) and include JAX stock #010512 in your Materials and Methods section.
|Heterozygous for Fcer1a<tm1Knt>|
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.
"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.