Inbred Strains of Mice: 129
129Inbr and colour depends on substrain (see below). Origin: Dunn 1928 from crosses of coat colour stocks from English fanciers and a chinchilla stock from Castle. This strain has a common origin with strain 101. Most substrains carry the white-bellied agouti gene A
Wthough only a subset have the agouti pattern as many carry albino or chinchilla and/or the pink-eyed dilution gene,
p, which is derived from Asian mice of the
Mus musculustype (see also strains SJL, P/J and FS/Ei) (
Brilliant et al, 1994).
It is known for the high incidence of spontaneous testicular teratomas, though the incidence differs between substrains, but more recently it has been the most widely used strain in the production of targeted mutations due to the availability of several lines of embryonic stem cells. Two recent studies show that there is major genetic variation within the 129 "family", at least some of which must be attributed to genetic contamination (Threadgill et al, 1997,Simpson et al, 1997). Strain 129/SvJ was genetically contaminated in about 1978 by an unknown strain, and differs from other 129 substrains at about 25% of SSLP genetic markers. Threadgill et al suggest that it is equivalent to a recombinant congenic strain and suggest that it is designated 129cX/Sv. Simpson et al recognised three major groups of substrains: parental substrains, steel substrains and "ter" substrains. Threadgill et al identified substrains 129/Ola, 129/J, 129/Sv, 129/ReJ and 129/RrRk, and the associated embryonic stem cells.
Studies of 129 genealogy and genetics have resulted in major nomenclature changes for 129 substrains. See Mouse Strain 129 Substrain Nomenclature.
"Parental" substrains
129/J 129/ReJ129/ReJ-Lama2
dy 129/OlaHsd 129/Sv 129/SvJ 129/ReInbr (J) 89. Pale yellow:
Aw,cch,p.Non-dystrophic substrain of 129/Re-
dy.Maint. by Ola.
129/RrJ.Inbr (J) 97. Pale yellow, or albino.
Aw, cch(or
c),
p. Origin: Jackson Laboratory 1948. Maint. by J.
129/Sv-ter/+Inbr (Sv) N8 F49. Agouti with light belly:
Aw, cch, p+.Also carries a gene
tercausing a high incidence of testicular teratomas. Origin: A substrain to determine the effect of the
Wgene on incidence of testicular teratomas. The
Wgene was backcrossed repeatedly to 129, and at generation N8 a female produced 38 male offspring of which 8 had testicular teratomas. All subsequent members derived from that mating. The
Wgene has been eliminated. Incidence of testicular teratomas now 30% (
Stevens, 1973). Maint. by J.
BehaviourLow avoidance conditionability (8/9) (
Royce, 1972). Low shock-avoidance learning (6/6 in males, 5/6 in females) (
Royce et al., 1971., 1971). Low preference for sweet tasting substances (saccharin, sucrose, dulcin and acesulfame, averaged, Sv substrain) (25/26) (
Lush 1988). Prefers moderate concentrations of saline (contrast C57BL/6) (
Beauchamp and Fisher, 1993, Gannon and Contreras, 1995).
Life-span and spontaneous disease
Long life-span in conventional conditions (18/22 = 679 days in males, 15/22 = 648 days in females) (Storer, 1966). Long life-span in SPF fostered conditions (16/17 = 699 days in males, 11/1 7 = 666 days in females) (Festing and Blackmore, 1971). Low overall tumour incidence (7% in males, 21% in females), including lymphoma 2% in males and 7% in females, soft tissue sarcomas 2% in males and 1% in females and benign tumours 2% in males and 3% in females (Smith et al., 1973., 1973). Lung tumours 4-46% (Festing and Blackmore, 1971). Testicular teratomas about 1% in most substrains, but 30% in the terSv substrain (Stevens, 1973). Incidence of teratomas increased in p53-deficient mice (Harvey et al, 1993). The Ter gene has been mapped to chromosome 18 (Asada et al, 1994). Congenital malformations about 4% in RrSvKt-jt substrain (Kalter, 1968). High incidence of urinary calculi (Russell and Meier, 1966).
Normal physiology and biochemistry
High plasma cholesterol at 12 and 24 weeks (2/8) (Weibust, 1973). Low plasma triglyceride levels (2/11) (Jiao et al 1990). High Na/K ratio in erythrocytes (1/9) and plasma (4/9) (Waymouth, 1973). High serum ceruloplasmin levels in males (3/26) but low levels in females (24/27) (Meier and MacPike, 1968). High plasma cholinesterase activity (3/22 in males, 8/22 in females) (Angel et al., 1967., 1967). Low mean heart rate (7/7) but high mean heart adaptation rate (2/7) (Blizard and Welty, 1971). High cell turnover in J substrain as estimated by rapid clearance of DNA-bound radioactivity (3/17) (Heiniger et al., 1972., 1972). Venous blood has a high pH (1/10) (Bernstein, 1966). High hepatic microsomal coumarin hydroxylase activity in females (2/8) (Van Iersel et al, 1994). High levels of apoA-IV messenger RNA in liver compared with C57BL/6 (Reue et al, 1993).
Has defective secretory group II phospholipase A2 gene (cf strains C57BL/6 and B10.RIII) (Kennedy et al, 1995).
AnatomyLarge brain/body weight ratio (3/20) (
Roderick et al., 1973., 1973). Small spinal cord (21/25) (
Roderick et al., 1973., 1973). Small forebrain volume (8/9) and neocortex (8/9) (
Wimer et al., 1969., 1969). A large proportion of 129/Ola mice have major shunts between the hepatic portal system and the vena cava, allowing the passage of microspheres up to 50m in diameter.. These shunts are associated with resistance to
Shistosoma japonicumcercariae (
Coulson and Wilson 1989). High retinal ganglion cell number (19/24) in /J substrain (
Williams et al, 1996). Absence of corpus callosum in about 70% of mice of the 129/J substrain. This may be related to retarded formation of the hippocampal commissure in this strain and in BALB/c mice (
Livy and Wahlsten, 1997). High bone density of femur in J substrain (3/11) (
Beamer et al, 1996).
DrugsResistant to skin ulceration by DMBA (cf. 9/22) (
Thomas et al., 1973., 1973). Resistant to induction of subcutaneous tumours by 3-methylcholanthrene (10/14) (
Kouri et al., 1973., 1973). Resistant to X-irradiation (1/27) (
Roderick, 1963), (1/10) (
Storer, 1966). Females have long sleeping time under hexobarbital anaesthetic (14/15) (Lovell, 1976). Resistant to toxic effects of isoniazid (3/10) (Taylor, 1976b). Insensitive (eosinophil response) to cortisone acetate (cf. 3/6) (
Wragg and Speirs, 1952). Sensitive uterine response to oestrogens (1/5) (
Chai and Dickie, 1966; Drasher, 1955). Susceptible (cf 5/8) to ozone-induced decreases of tracheal potential (
Takahashi et al, 1995).
ImmunologyHigh lymphocyte phytohaemagglutinin response (12/43) (
Heiniger et al., 1975., 1975). Responder to synthetic polypeptide (Glu
57, Lys
38, Ala
5) (cf. 3/7) (
Pinchuck and Maurer, 1965). Erythrocytes have a high agglutin ability (cf. 14/25) (
Rubinstein et al., 1974., 1974). High responder to Dextran (cf. 4/10) (
Blomberg et al., 1972., 1972). Experimental systemic lupus erythematosus including severe ocular changes and blepharitis can be induced by injection of human monoclonal anti-DNA antibodies (
Chan et al, 1995).
InfectionCarries no detectable endogenous ecotropic MuLV DNA sequences (
Jenkins et al 1982).
ReproductionPoor breeding performance (19/22), colony output 0.8 young/female/wk, litter size at weaning 4.5 (19/22) (Festing, 1976a).
MiscellaneousRecommended host for transplantable tumour haemangioendothelioma BW6473 (Kaliss, 1972).
Angel C. R., Mahin D. T., Farris R. D., and Woodward K. T. (1967) Heritability of plasma cholinesterase activity in inbred mouse strains. Science 156, 529-530.Kalter H. (1968) Sporadic congenital malformations of newborn inbred mice. Teratology 1, 193-200.
Weibust R. S. (1973) Inheritance of plasma cholesterol levels in mice. Genetics 73, 303-312.
INBRED STRAINS OF MICERetroSearch is an open source project built by @garambo | Open a GitHub Issue
Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4