Basic Information

Strain Name
Stock Number
Common Name
B-Tcf21-iCreERT2 mice
Biocytogen Jiangsu Co., Ltd
Related Genes
Ncr1iCre (wt/mut)


In human, TCF21 encodes a transcription factor of the basic helix-loop-helix family. The TCF21 product is mesoderm specific, and expressed in embryonic epicardium, mesenchyme-derived tissues of lung, gut, gonad, and both mesenchymal and glomerular epithelial cells in the kidney. Two transcript variants encoding the same protein have been found for this gene.

This Tcf-iCre/ERT2 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 natural mesenchyme-derived tissue.

Targeting strategy



 Genotyping PCR Primer

Primer Sequence (5’-3’) Tm (℃) Product Size (bp)

 PCR Reaction System

Reaction Component Volume(µL) Final Concentration
ddH2O 14
10×Taq buffer 2
10 mM dNTPs 0.5 250 mM each
10 mM Primer-F 0.5 0.25 mM
10 mM Primer-R 0.5 0.25 mM
2.5 U/mL Taq DNA Polymerase Polymerase 0.5 0.0625 U/mL
100-200   ng/mL Template DNA 2 10-20 ng/mL

PCR Steps

Step Temp. Time Cycles
1 95℃ 5 min 1
2 95 ℃ 30 s 30
3 61 ℃ 30 s
4 72 ℃ 1 kb / min
5 72 ℃ 10 min 1
6 4℃ hold 1

Determination of Genotypes

Identification of Genotypes According to PCR Results

Primer-WT-F/Primer-WT-R Primer-WT-F /Primer-Mut-R Genotype
Mutation Wild Type Mutation
N* N Y Mut/Mut
N* Y Y Mut/+
N Y N +/+

N*: PCR product was too long to detect Mut/Mut: representing homozygous
N: No expected PCR product detected Mut/+: hemizygous
Y: Expected PCR product detected. +/+: wild type allele

Agarose Gel Electrophoresis

Gene Editing Results

Number Strain Number Genotype
1 1SY2-009 Mut/ +
2 1SY2-011 Mut/ +
3 1SY2-012 Mut/ +
4 1SY2-014 Mut/ +
5 1SY2-015 Mut/ +
6 1SY2-019 Mut/+
7 1SY2-020 Mut/ +
8 1SY2-022 Mut/ +
9 1SY2-026 Mut/ +
10 1SY2-031 Mut/ +
11 1SY2-032 Mut/ +



  1. Chaushu S; Wilensky A; Gur C; Shapira L; Elboim M; Halftek G; Polak D; Achdout H; Bachrach G; Mandelboim O. 2012. Direct recognition of Fusobacterium nucleatum by the NK cell natural cytotoxicity receptor NKp46 aggravates periodontal disease. PLoS Pathog 8(3):e1002601. [PubMed:22457623]
  2. Elboim M; Gazit R; Gur C; Ghadially H; Betser-Cohen G; Mandelboim O. 2010. Tumor immunoediting by NKp46. J Immunol 184(10):5637-44. [PubMed:20404273]
  3. Ghadially H; Horani A; Glasner A; Elboim M; Gazit R; Shoseyov D; Mandelboim O. 2013. NKp46 regulates allergic responses. Eur J Immunol 43(11):3006-16. [PubMed: 23878025]
  4. Ghadially H; Ohana M; Elboim M; Gazit R; Gur C; Nagler A; Mandelboim O. 2014. NK Cell Receptor NKp46 Regulates Graft-versus-Host Disease. Cell Rep 7(6):1809-14. [PubMed: 24882008]
  5. Glasner A; Ghadially H; Gur C; Stanietsky N; Tsukerman P; Enk J; Mandelboim O. 2012. Recognition and Prevention of Tumor Metastasis by the NK Receptor NKp46/NCR1. J Immunol 188(6):2509-15. [PubMed: 22308311]
  6. Gur C; Porgador A; Elboim M; Gazit R; Mizrahi S; Stern-Ginossar N; Achdout H; Ghadially H; Dor Y; Nir T; Doviner V; Hershkovitz O; Mendelson M; Naparstek Y; Mandelboim O. 2010. The activating receptor NKp46 is essential for the development of type 1 diabetes. Nat Immunol 11(2):121-8. [PubMed: 20023661]
  7. 7. Wang F, Meng M, Mo B, et al. Crosstalks between mTORC1 and mTORC2 variagate cytokine signaling to control NK maturation and effector function[J]. Nature communications, 2018, 9(1): 4874