Mice homozygous for the severe combined immune deficiency spontaneous mutation (Prkdcscid, commonly referred to as scid) are characterized by an absence of functional T cells and B cells, lymphopenia, hypogammaglobulinemia, and a normal hematopoietic microenvironment. Normal antigen-presenting cell, myeloid and NK cell functions are strain dependent. scid mice carry a DNA repair defect and a defect in the rearrangement of genes that code for antigen-specific receptors on lymphocytes. Most homozygotes have no detectable IgM, IgG1, IgG2a, IgG2b, IgG3, or IgA. Thymus, lymph nodes, and splenic follicles are virtually devoid of lymphocytes. scid mice accept allogeneic and xenogeneic grafts making them an ideal model for cell transfer experiments. Some scid mice will spontaneously develop partial immune reactivity. scid mice that have serum Ig levels greater than 1 ug/ml are considered "leaky." scid leakiness is highly strain dependent, increases with age, and is higher in mice housed under non SPF conditions. In general, scid leakiness is high on the C57BL/6J and BALB/cBy genetic backgrounds, low on the C3H/HeJ background, and even lower on the NOD/LtSz background. In addition to the effects of the scid mutation, GhrhrlitPrkdcscid /Bm mice are deficient in growth hormone and IGF1 while GhrhhpgPrkdcscid/Bm mice (Stock No. 002038) are deficient in gonadotropins and gonodal steroids. These two double mutant strains are useful for determining endocrine dependence of grafted cells and tissues.
C57BL/6J-Ghrhrlit/Ghrhrlit x C.B-17-Prkdcscid/Prkdcscid offspring were sibling mated. The strain was made homozygous for Prkdcscid and kept segregating for Ghrhrlit and the sibling mating continued to the present.
|Allele Synonym(s)||lit; litm|
|Gene Symbol and Name||Ghrhr, growth hormone releasing hormone receptor|
|Gene Synonym(s)||GHRFR; GHRHREC; GRFR; Ghrfr; Ghrfr; IGHD1B; growth hormone releasing factor receptor; lit; little|
|Strain of Origin||C57BL/6J|
|Molecular Note||The mutation in little mice is a A-to-G transition in codon 60 that is predicted to alter this residue from a aspartate to a glycine in the encoded protein. Reduced levels of mRNA were noted in total RNA derived from pituitary of homozygous mice, and invitro assays demonstrated that no functional protein is made from this allele.|
|Allele Name||severe combined immunodeficiency|
|Allele Synonym(s)||SCID; scid|
|Gene Symbol and Name||Prkdc, protein kinase, DNA activated, catalytic polypeptide|
|Gene Synonym(s)||AI326420; AU019811; DNA-PK; DNA-PKcs; DNAPDcs; DNAPK; DNPK1; DOXNPH; HYRC; HYRC1; IMD26; XRCC7; doxorubicin nephropathy; dxnph; dxnph; expressed sequence AI326420; expressed sequence AU019811; p350; scid; severe combined immunodeficiency; slip|
|Strain of Origin||C.B-17|
|Molecular Note||A T-to-A transversion point mutation at a position corresponding to codon 4095 created a premature stop codon.|
"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.