Abstract
It is clear that the dermal papilla cell (DPC), which is located at the bottom of the hair follicle, is a special mesenchymal component, and it plays a leading role in regulating hair follicle development and periodic regeneration. Recent studies showed that the Wnt signaling pathway through β-catenin (canonical Wnt signaling pathway) is an essential component in maintaining the hair-inducing activity of the dermal papilla and growth of hair papilla cells. However, the intrinsic pathways and regulating mechanism are largely unknown. In the previous work, we constructed a cDNA subtractive library of DPC and first found that the TCF4 gene, as a key factor of Wnt signaling pathway, was expressed as the upregulated gene of the hair follicle in low-passage DPC. This study was to explore the role of TCF4 in regulating the proliferation and secretory activity of DPC. We constructed a pcDNA3.0-TCF4 expression vector and transfected it into DPC to achieve stable expression by bangosome 2000. Furthermore, we used the method of chemosynthesis to synthesize three pairs of TCF4 siRNA and transfected them into DPC. Meanwhile, we compared the transfection group and non-transfection group. We first proposed that there was expression difference...Continue Reading
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