Genome-wide tongue epithelia transcriptomic profiles from K14-rtTA;TRE-FLBmi-1 + 4-nitroquinoline 1-oxide (4-NQO), 25 weeks (KrTB-N (25w)), KrTB+Doxycycline+4-NQO, 4 weeks (KrTB-DN (4w)), and KrTB+Doxycycline+4-NQO, 10 weeks (KrTB-DN (10w)).

We developed a transgenic mouse model (truncated K14-rtTA; TRE/Bmi1, KrTB) containing a doxycycline- (dox) controlled, Tet-responsive element system to selectively overexpress BMI1 only in the basal epithelial stem cells (SCs) of the tongue. Here we used this transgenic mouse line to delineate BMI1 actions in early-stage oral squamous cell carcinoma (OSCC). We observed more oncogenic changes in mice with ectopic BMI1 expression after 4 weeks of 4-nitroquinoline 1-oxide (4-NQO) treatment. We detected increased proliferation and oxidative stress, as well as increased expression of multiple transcripts and proteins linked to human OSCCs, in murine tongue epithelia with high BMI1 expression during early carcinogen-induced tumorigenesis. Furthermore, increases in mRNAs encoding multiple metabolic targets, such as SLC16A3, PKM, and GPI1, were accelerated upon BMI1 overexpression in our 4-NQO model. Overall design: Examination of genome-wide transcript levels in mouse tongue epithelia samples. 12 samples were analyzed, 4 biological replicates per condition (KrTB-DN (4w) vs. KrTB-N (25w) and KrTB-DN (10w) vs. KrTB-N (25w)). *************************************************************** The table below lists GEO accessions reused/reanalyzed for this study. ***************************************************************