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B-Prrx1-iCre mice
Strain Name

C57BL/6-Prrx1tm1(icre)Bcgen/Bcgen

Stock No.  110130
Common name

B-Prrx1-iCre mice

Gene symbol and name  Prrx1(paired related homeobox 1), K-2; Pmx; mHox
Strain of origin

C57BL/6

Chromosome  1
Coat color Black Dietary information Growth and reproduction diet for experimental mice
NCBI Gene ID
18933

Application

  • Function research of genes
  • This Prrx1iCre model is an efficient tool to study various gene functions when crossed with mice with different loxP site-flanked genes of interest, especially in studies of mesodermal development, such as cardiac, skeletal development and signaling.

Expression


Expressed gene

iCre, improved cre recombinase, bacteriophage P1


Site of expression

The mesoderm of mouse embryos, cardiac, skeletal, and smooth muscle tissues in adults.


Gene editing strategy


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An F2A-iCre sequence cassette was placed between the coding sequence of exon 1 and 5’UTR of the Prrx1 gene in C57BL/6 ES cells. This strain was maintained on a C57BL/6 genetic background



Phenotype Analysis


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ALPL deficiency caused decreased membrane expression of L-type Ca2+ channels in BMSCs. a Ca2+ imaging showed decreased Ca2+ influx in cultured alpl+/− BMSCs and WT BMSCs transfected with shALP (shALP/WT) after they were stimulated with 30 mmol·L−1 KCl for 3 min (n = 10). b No KCl-induced Ca2+ influx was detected in cultured WT, alpl+/−, and shALP/WT BMSCs treated with 10 mmol·L−1 EGTA for 3 min (n = 10). c ALPL overexpression was mediated by a lentivirus in alpl+/− (Lenti-alp/alpl+/−) BMSCs and resulted in an elevated Ca2+ influx following stimulation with 30 mmol·L−1 KCl for 3 min (n = 10). d, e The expression of CaV1.1, CaV1.2, and CaV1.3 was assessed. alpl+/− BMSCs showed decreases in total cell expression (d) and membrane expression of CaV1.2 and CaV1.3 (e) and no significant change in the levels of

cytoplasmic CaV1.2 and CaV1.3 (e). Total CaV1.1 protein expression was not changed (d), and the expression of membrane and cytoplasmic CaV1.1 was not altered in alpl+/− BMSCs (e). f Cell-surface biotinylation assay. Left two lanes: western blot for CaV1.2 and CaV1.3 followingneutravidin pull down from WT and alpl+/− BMSCs; right two lanes: input, not biotinylated cells. h, Representative images of confocal laser scanning microscopy showing the membrane location of CaV1.2 and CaV1.3 (green) in WT and Lenti-alp/alpl+/− BMSCs. The plasma membrane was stained with the marker CellMask™ Deep Red Plasma Membrane Stain (red) (h). Scale bar, 10 μm.

(source: Li B et al.,2020)

reference


1. Durland JL; Sferlazzo M; Logan M; Burke AC. 2008. Visualizing the lateral somitic frontier in the Prx1Cre transgenic mouse. J Anat 212(5):590-602. [PubMed: 18430087]

2. Seo HS; Serra R. 2007. Deletion of Tgfbr2 in Prx1-cre expressing mesenchyme results in defects in development of the long bones and joints. Dev Biol 310(2):304-16. [PubMed: 17822689]

3. Li B, He X, Dong Z, Xuan K, Sun W, Gao L, Liu S, Liu W, Hu C, Zhao Y, Shi S, Jin Y. Ionomycin ameliorates hypophosphatasia via rescuing alkaline phosphatase deficiency-mediated L-type Ca2+ channel internalization in mesenchymal stem cells. Bone Res. 2020 Apr 26;8:19. [PubMed: 32351759]