Project description:Tcl1 is known to be involved in survival, proliferation and differentiation of human lymphocytes and mouse embryonic stem cells. Loss of Tcl1 gene in the KO mouse model affects skin integrity inducing alopecia and ulcerations. The study used epidermal keratinocytes from wild type (WT), Tcl1 knock down (KO) and K14-driven TCL1 transgenic (TGKO) mouse models to investigate the role of Tcl1 gene in the skin homeostasis. Our data indicate that Tcl1 loss mainly induces a decrease in the gene expression of keratinocytes, which is largely rescued by K14-TCL1. GO analysis revealed Tcl1 to be involved in the proliferation and differentiation of mouse keratinocytes. Moreover, pathway analysis identifies growth factor and MAPK signaling to be highly implicated.
Project description:Tcl1 tg mice develop a chronic lymphocytic leukemia (CLL) -like disease. To investigate the contribution of the adhesion molecule CD44 to CLL pathophysiology, we developed a CD19Cre CD44flox/flox Tcl1 tg mouse with a B cell specific CD44 deficiency (CD44ΔB Tcl1 tg). We used the Clariom S mouse microarray from Affymetrix to investigate transcriptional differeneces between Tcl1 tg and CD44ΔB Tcl1 tg mice