Summary | Mutation origin | Mutation description | Expression | Phenotypes | Disease models | Find Mice (IMSR) | References

Symbol:	Sp4tm3(Sp4)Krc
Name:	trans-acting transcription factor 4; targeted mutation 3, Kenneth R Chien
MGI ID:	MGI:3663671
Synonyms:	Sp4-, Sp4neo-, Sp4tm3Krc
Gene:	Sp4  Location: Chr12:118198668-118265175 bp, - strand  Genetic Position: Chr12, 63.48 cM
Alliance:	Sp4tm3(Sp4)Krc page

Germline Transmission:	Earliest citation of germline transmission: J:110135
Parent Cell Line:	R1 (ES Cell)
Strain of Origin:	(129X1/SvJ x 129S1/Sv)F1-Kitl+

Allele Type:    Targeted (Conditional ready, Hypomorph, Reporter) Mutation:    Insertion   Mutation details: A loxP-flanked, nuclear-targeted lacZ gene, with the exon 3 splice acceptor of the mouse Sp4 gene incorporated at its 5' end and two additional transcription termination signals from SV40 at its 3' end, was inserted into the first intron, and the rat Sp4 cDNA coding region followed by a neomycin resistance cassette and the mouse Sp4 3'UTR was inserted, in-frame, into exon 2 of the endogenous gene. Expression of the rat sequence is blocked by the triple termination signal; semi-quantitative RT-PCR analysis demonstrates leaky expression of the rat transcript at ~2-5% the level of the wild-type mouse gene. The expression pattern of lacZ in heterozygous miutant mice is the same as that observed for the endogenous Sp4 transcript by in situ hybridization. Except for low level expression in the apical ectodermal ridge, lacZ expression is restricted to the embryonic nervous system; in the adult, expression is observed primarly in the hippocampus CA1 and dentate gyrus and is restricted to the hippocampal neuronal cell layers. Full Sp4 expression can be restored and the phenotype rescued by Cre recombinase excision of lacZ in the germline. (J:110135)

View phenotypes and curated references for all genotypes (concatenated display).

In Structures Affected by this Mutation:

2 anatomical structure(s)

Mouse strains and cell lines available from the International Mouse Strain Resource (IMSR)
Carrying this Mutation:	Mouse Strains: 1 strain available      Cell Lines: 0 lines available
Carrying any Sp4 Mutation:	35 strains or lines available

Original:	J:110135 Zhou X, et al., Reduced expression of the Sp4 gene in mice causes deficits in sensorimotor gating and memory associated with hippocampal vacuolization. Mol Psychiatry. 2005 Apr;10(4):393-406
All:	7 reference(s)