C57BL/6J is the most widely used inbred strain and the first to have its genome sequenced. Although this strain is refractory to many tumors, it is a permissive background for maximal expression of most mutations. C57BL/6J mice are resistant to audiogenic seizures, have a relatively low bone density, and develop age related hearing loss. They are also susceptible to diet-induced obesity, type 2 diabetes, and atherosclerosis. Macrophages from this strain are resistant to the effects of anthrax lethal toxin.
View pricing for C57BL/6J (000664) 16-24 weeks of age.
View pricing aged C57BL/6J (000664) 25-72 weeks of age.
This strain is homozygous for Cdh23ahl, the age related hearing loss 1 mutation, which on this background results in progressive hearing loss with onset after 10 months of age.
C57BL/6 is the most widely used inbred strain. It is commonly used as a general purpose strain and background strain for the generation of congenics carrying both spontaneous and induced mutations. Although this strain is refractory to many tumors, it is a permissive background for maximal expression of most mutations. C57BL/6J mice are used in a wide variety of research areas including cardiovascular biology, developmental biology, diabetes and obesity, genetics, immunology, neurobiology, and sensorineural research. C57BL/6J mice are also commonly used in the production of transgenic mice. Overall, C57BL/6 mice breed well, are long-lived, and have a low susceptibility to tumors. Primitive hematopoietic stem cells from C57BL/6J mice show greatly delayed senescence relative to BALB/c and DBA/2J. This is a dominant trait. Other characteristics include: 1) a high susceptibility to diet-induced obesity, type 2 diabetes, and atherosclerosis; 2) a high incidence of microphthalmia and other associated eye abnormalities; 3) resistance to audiogenic seizures; 4) low bone density; 5) hereditary hydrocephalus (early reports indicate 1 - 4 %); 6) hairloss associated with overgrooming, 7) a preference for alcohol and morphine; 8) late-onset hearing loss; and 9) increased incidence of hydrocephalus and malocclusion.
C57BL/6J mice fed a high-fat diet develop obesity, mild to moderate hyperglycemia, and hyperinsulinemia (see JAX® Diet-induced Obesity (DIO) Models). C57BL/6J mice fed an atherogenic diet (1.25% cholesterol, 0.5% cholic acid and 15% fat) for 14 weeks develop lesions in the range of 4500 to 8000 um2 atherosclerotic aortic lesions/aortic cross-section. The variation in aortic lesions found among various inbred strains has led to the identification of the existence of eight genes affecting atherosclerosis, Ath1 to Ath8. C57BL/6J mice also develop severe and progressive hearing loss later in life. Histopathological changes associated with age-related hearing loss include the disruption of both outer and inner hair cells. C57BL/6 mice are also more susceptible to noise-induced hearing loss. Age related hearing loss 1 (Ahl), a major gene responsible for this hearing loss, was mapped in an intersubspecific backcross by measuring elevated auditory-evoked brainstem response (ABR) thresholds. Ahl is located on Chromosome 10 near marker D10Mit5. A naturally occurring deletion in nicotinamide nucleotide transhydrogenase (Nnt) exons 7-11 occurred in C57BL/6J sometime prior to 1984. This deletion results in the absence of the NNT protein, and is associated with impaired glucose homeostasis control and reduced insulin secretion. This mutation is not found in C57BL/6JEi, C57BL/6N, C57BL/6NJ, C57BL/6ByJ, C57BL/10J, C57L/J, or C58/J (Toye AA, et al, Diabetologia, 2005). Since C57BL/6JEi separated from C57BL/6J in 1976, the Nnt deletion arose sometime between 1976 and 1984. Because of the n-Tr20m1J point mutation, which is also present in C57BL/6JEiJ but not C57BL/6NJ or C57BL/6ByJ, extracts from the cerebellum of C57BL/6J mice have increased ribosomal pausing at AGA codons compared with that of other inbred strains (Ishimura et al., 2014).
C57BL/6J was the DNA source for the international collaboration that generated the first high quality draft sequence of the mouse genome. 5 SNP differences have been identified that distinguish C57BL/6J from C57BL/6ByJ and C57BL/6NJ. Both C57BL/6ByJ and C57BL/6NJ type as follows: 08-015199792-M (rs3709624) is C; 11-004367508-M (rs3659787) is A; 13-041017317-M (rs3722313) is C; 15-057561875-M (rs3702158) is G; 19-049914266-M (rs3724876) is T. C57BL/6J types as follows: 08-015199792-M (rs3709624) is T; 11-004367508-M (rs3659787) is G; 13-041017317-M (rs3722313) is T; 15-057561875-M (rs3702158) is A; 19-049914266-M (rs3724876) is G (Petkov and Wiles, 2004.) Others have subsequently identified further SNP differences between sublines of C57BL/6 (Mekada et al., 2009, Zurita et al., 2010).
The C57BL/6J inbred strain was created by Dr. CC Little from the mating of female 57 with male 52 from Miss Abbie Lathrop's stock. The same cross gave rise to the C57L and C57BR strains.
|Allele Name||b-1 variant|
|Allele Type||Not Applicable (Not Applicable)|
|Allele Synonym(s)||Ah; Ahb-1; Ahb; Ahhi; Ahrb; In|
|Gene Symbol and Name||Ahr, aryl-hydrocarbon receptor|
|Gene Synonym(s)||Ah; Ah; Ahh; Ahh; Ahre; Ahre; In; In; aromatic hydrocarbon responsiveness; aryl hydrocarbon hydroxylase; bHLHe76; dioxin receptor; inflammatory reactivity|
|Strain of Origin||C57BL/6J|
|Allele Name||age related hearing loss 1|
|Allele Synonym(s)||Cdh23753A; mdfw|
|Gene Symbol and Name||Cdh23, cadherin 23 (otocadherin)|
|Gene Synonym(s)||4930542A03Rik; 4930542A03Rik; CDHR23; RIKEN cDNA 4930542A03 gene; USH1D; W; age related hearing loss 1; ahl; ahl; bob; bob; bobby; bus; bustling; mdfw; mdfw; modifier of deaf waddler; neuroscience mutagenesis facility, 112; neuroscience mutagenesis facility, 181; neuroscience mutagenesis facility, 252; nmf112; nmf112; nmf181; nmf181; nmf252; nmf252; sals; sals; salsa; v; waltzer|
|Strain of Origin||multiple strains|
|Gene Symbol and Name||Nnt, nicotinamide nucleotide transhydrogenase|
|Gene Synonym(s)||4930423F13Rik; 4930423F13Rik; AI323702; BB168308; GCCD4; RIKEN cDNA 4930423F13 gene; expressed sequence AI323702; expressed sequence BB168308|
|Strain of Origin||C57BL/6J|
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The average number of mice provided from recovery of our cryopreserved strains is 10. The total number of animals provided,
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Optimize your microinjection workflow using cryopreserved morulae
Standard C57BL/6J DIO Mice fed a high fat diet are readily available up to 26 weeks of age.
Standard C57BL/6J Mice induced to develop hyperglycemia via injections of Streptozotocin
Cohorts of Aged C57BL/6J male mice are available
Order pregnant mice with a defined gestational day for select strains