The promoter of the HaCaT keratinocyte differentiation-related gene keratin 4 contains a functional AP-2 binding site

1997 ◽  
Vol 289 (12) ◽  
pp. 705-708 ◽  
Author(s):  
R. Wanner ◽  
Juan Zhang ◽  
Tomislav Dorbic ◽  
Dietmar Mischke ◽  
Beate M. Henz ◽  
...  
Biology ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 121
Author(s):  
Seigo Usuki ◽  
Noriko Tamura ◽  
Tomohiro Tamura ◽  
Kohei Yuyama ◽  
Daisuke Mikami ◽  
...  

Histamines suppress epidermal keratinocyte differentiation. Previously, we reported that konjac ceramide (kCer) suppresses histamine-stimulated cell migration of HaCaT keratinocytes. kCer specifically binds to Nrp1 and does not interact with histamine receptors. The signaling mechanism of kCer in HaCaT cells is also controlled by an intracellular signaling cascade activated by the Sema3A-Nrp1 pathway. In the present study, we demonstrated that kCer treatment induced HaCaT keratinocyte differentiation after migration of immature cells. kCer-induced HaCaT cell differentiation was accompanied by some features of keratinocyte differentiation markers. kCer induced activating phosphorylation of p38MAPK and c-Fos, which increased the protein levels of involucrin that was the latter differentiation marker. In addition, we demonstrated that the effects of both kCer and histamines are regulated by an intracellular mechanism of Rac1 activation/RhoA inhibition downstream of the Sema3A/Nrp1 receptor and histamine/GPCR pathways. In summary, the effects of kCer on cell migration and cell differentiation are regulated by cascade crosstalk between downstream Nrp1 and histamine-GPCR pathways in HaCaT cells.


2006 ◽  
Vol 172 (1) ◽  
pp. 141-146 ◽  
Author(s):  
H. Yagihara ◽  
Y. Terada ◽  
S. Sugimoto ◽  
F. Hidaka ◽  
O. Yamada ◽  
...  

2002 ◽  
Vol 277 (19) ◽  
pp. 16403-16411 ◽  
Author(s):  
Liliana Pardo-Lopez ◽  
Mei Zhang ◽  
Jie Liu ◽  
Min Jiang ◽  
Lourival D. Possani ◽  
...  

2008 ◽  
Vol 479 (2) ◽  
pp. 153-157 ◽  
Author(s):  
Yong Geng ◽  
Yingang Feng ◽  
Tao Xie ◽  
Yuanyuan Dai ◽  
Jinfeng Wang ◽  
...  

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