Transglutaminase 2 mediates UVB‐induced matrix metalloproteinase‐1 expression by inhibiting nuclear p65 degradation in dermal fibroblasts

2021 ◽  
Author(s):  
Seok‐Jin Lee ◽  
Ki Baek Lee ◽  
Ah‐Young Hong ◽  
Young Hoon Son ◽  
Dong Hun Lee ◽  
...  
2018 ◽  
Vol 19 (9) ◽  
pp. 2503 ◽  
Author(s):  
Ah-Ram Han ◽  
Tae-Gyu Lim ◽  
Young-Ran Song ◽  
Mi Jang ◽  
Young Rhee ◽  
...  

Opuntia humifusa is a type of cactus whose fruits have been used in folk medicine for the treatment of several diseases. In the present study, we aimed to determine whether O. humifusa fruit water extract (OHE) has inhibitory effects against solar ultraviolet (sUV)-induced matrix metalloproteinase-1 (MMP-1) expression. In ex vivo human skin, we found that OHE suppressed sUV radiation-induced MMP-1 expression. The inhibitory effect of OHE was confirmed in human dermal fibroblasts. OHE treatment reduced sUV-induced MMP-1 expression by suppressing reactive oxygen species (ROS) generation and phosphorylation of c-Jun, a component of transcription factor activator protein 1 (AP-1). On the other hand, OHE recovered the tissue inhibitor of matrix metalloproteinase 1 (TIMP-1) and type 1 collagen production attenuated by sUV. As upstream signaling pathways for AP-1, MKK4-JNK, MEK-ERK, and MKK3/6-p38 phosphorylation were downregulated by OHE treatment. In addition, OHE exhibited DPPH radical scavenging activity. These findings demonstrate that OHE has a preventive effect against sUV-induced skin damage via suppression of pathways triggered by ROS.


2014 ◽  
Vol 134 (3) ◽  
pp. 643-650 ◽  
Author(s):  
Yunyuan Li ◽  
Ruhangiz T. Kilani ◽  
Elham Rahmani-Neishaboor ◽  
Reza B. Jalili ◽  
Aziz Ghahary

Sign in / Sign up

Export Citation Format

Share Document