[HTML][HTML] Tamoxifen-Independent Recombination in the RIP-CreER Mouse
Y Liu, J Suckale, J Masjkur, MG Magro, A Steffen… - PloS one, 2010 - journals.plos.org
Y Liu, J Suckale, J Masjkur, MG Magro, A Steffen, K Anastassiadis, M Solimena
PloS one, 2010•journals.plos.orgBackground The inducible Cre-lox system is a valuable tool to study gene function in a
spatial and time restricted fashion in mouse models. This strategy relies on the limited
background activity of the modified Cre recombinase (CreER) in the absence of its inducer,
the competitive estrogen receptor ligand, tamoxifen. The RIP-CreER mouse (Tg (Ins2-
cre/Esr1) 1Dam) is among the few available β-cell specific CreER mouse lines and thus it
has been often used to manipulate gene expression in the insulin-producing cells of the …
spatial and time restricted fashion in mouse models. This strategy relies on the limited
background activity of the modified Cre recombinase (CreER) in the absence of its inducer,
the competitive estrogen receptor ligand, tamoxifen. The RIP-CreER mouse (Tg (Ins2-
cre/Esr1) 1Dam) is among the few available β-cell specific CreER mouse lines and thus it
has been often used to manipulate gene expression in the insulin-producing cells of the …
Background
The inducible Cre-lox system is a valuable tool to study gene function in a spatial and time restricted fashion in mouse models. This strategy relies on the limited background activity of the modified Cre recombinase (CreER) in the absence of its inducer, the competitive estrogen receptor ligand, tamoxifen. The RIP-CreER mouse (Tg (Ins2-cre/Esr1) 1Dam) is among the few available β-cell specific CreER mouse lines and thus it has been often used to manipulate gene expression in the insulin-producing cells of the endocrine pancreas.
Principal Findings
Here, we report the detection of tamoxifen-independent Cre activity as early as 2 months of age in RIP-CreER mice crossed with three distinct reporter strains.
Significance
Evidence of Cre-mediated recombination of floxed alleles even in the absence of tamoxifen administration should warrant cautious use of this mouse for the study of pancreatic β-cells.
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