RNA-seq of Smarca5-deficient CD4/CD8 double-positive thymocytes isolated from 6-week mouse thymi and their comparison with wild-type and TP53-null controls.

Here we utilized a conditional knock-out mouse model to investigate the role of Smarca5, an ISWI subfamily chromatin remodeling ATPase, during thymocyte development using hCD2-iCre transgene. We did transcriptional profiling of FACS-sorted CD4/CD8 double-positive thymocytes as this thymic population was persistent yet strongly underrepresented in adult 6-week mutant thymi. Controls included age-matched CD4/CD8 double-positive thymocytes from wild-type and tumor suppressor protein Trp53-null mice. For comparison, the Smarca5/Trp53-double-deficient thymocytes included in the experiment were partially rescued upon loss of Trp53.