Qing Hua Chang Yin attenuates lipopolysaccharide-induced inflammatory response in human intestinal cells by inhibiting NF-κB activation.
Ulcerative colitis (UC) is a major form of inflammatory bowel disease (IBD), which is tightly regulated by the nuclear factor κB (NF-κB) pathway. Thus, the suppression of NF-κB signaling may provide a promising strategy for the treatment of UC. Qing Hua Chang Yin (QHCY) is a traditional Chinese formulation, which has been used for a number of years to clinically treat UC. However, little is known with regard to its anti-inflammatory properties. In the present study, lipopolysaccharide (LPS)-stimulated Caco-2 cells were used as anin vitroinflammatory model of the human intestinal epithelium to evaluate the anti-inflammatory effects of QHCY and its underlying molecular mechanisms. We observed that QHCY inhibited the inflammatory response in intestinal epithelial cells as it significantly and concentration-dependently reduced the LPS-induced secretion of pro-inflammatory TNF-α and IL-8 in Caco-2 cells. Furthermore, QHCY treatment inhibited the phosphorylation of IκB and the nuclear translocation of NF-κB in Caco-2 cells in a concentration-dependent manner, indicating that QHCY suppressed the activation of the NF-κB signaling pathway. Collectively, our results suggest that the inhibition of NF-κB-mediated inflammation may constitute a potential mechanism by which QHCY treats UC.
Department of Gastroenterology, Second Affiliated Hospital of Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350003;
Xiao
X
Ke
Jingtuan
J
Chen
Xin
X
Zhang
Wenyi
W
Fang
Chunbo
C
Yang
Jun
J
Peng
Youqin
Y
Chen
Thomas J
TJ
Sferra
NF-κB pathway; Qing Hua Chang Yin; inflammation; traditional Chinese medicine; ulcerative colitis