QIN Le,CHEN Yong,HUANG Guidong,et al.Effects of Isodon ternifolius extract on TLR4/NF-κB/NLRP3 pathway in hepatic stellate cells and hepatocytes[J].ZHONGGUO YAOFANG,2022,33(20):2448-2453.
extract on Toll-like receptor 4 (TLR4)/nuclear factor-κB (NF-κB)/NOD-like receptor protein 3 (NLRP3) pathway in hepatic stellate cells and hepatocytes.
METHODS
2
Using primary hepatic stellate cells and primary hepatocytes of rats as subjects, inflammatory injury model was induced by lipopolysaccharide (LPS, 100 ng/mL). Using colchicine (1 μmol/L) as positive control and TLR4 inhibitor (TAK-242, 1 μmol/L) as reference, the contents of transforming growth factor-β
1
(TGF-β
1
),
α
-smooth muscle actin (
α
-SMA), type Ⅰ collagen (COL-Ⅰ), COL-Ⅲ in the supernatant of hepatic stellate cells, and the contents of alanine aminotransferase (ALT), aspartate aminotransferase (AST), interleukin-1β (IL-1β) and IL-18 in the supernatant of hepatocytes were detected after intervention with
I. ternifolius
extract (1 mg/mL). The mRNA expressions of TLR4, inhibitor α
of NF-κB (IκBα), NF-κB p65, NLRP3, Gasdermin D (GSDMD), apoptosis-associated speck-like protein containing CARD(ASC) and protein expressions of TLR4, phosphorylated IκBα (p-IκBα), NF-κB p65, NLRP3, GSDMD, ASC in the above cells were determined.
RESULTS
2
Compared with LPS model group, the contents of TGF-β
1
,
α
-SMA, COL-Ⅰ and COL-Ⅲ in the supernatant of hepatic stellate cells and the contents of ALT, AST, IL-1β and IL-18 in the supernatant of hepatocytes were significantly decreased; the mRNA expressions of TLR4, NF-κB p65, NLRP3, GSDMD, ASC and the protein expressions of TLR4, p-IκBα, NF-κB p65, NLRP3, GSDMD, ASC in the two kinds of cells were significantly down-regulated, and the mRNA expression of IκBα was significantly up-regulated in all administration groups (
P
<0.05). Compared with TLR4 inhibitor group, the improvement of most of above indexes was more significant in the TLR4 inhibitor+
I. ternifolius
extract group (
P
<0.05).
CONCLUTIONS
I. ternifolius
extract could inhibit the activation of TLR4/NF-κB/NLRP3 pathway, reduce the release of fibrosis factors and inflammatory factors, alleviate the inflammatory injury of liver cells, and inhibit the activation of hepatic stellate cells, so as to protect liver cells and resist liver fibrosis.
ZHANG Y J , WANG K , CHEN H C , et al . Anti-inflammatory lignans and phenylethanoid glycosides from the root of Isodon ternifolius (D.Don)Kudo [J ] . Phytoche-mistry , 2018 , 153 : 36 - 47 .
ZHANG F , JIN H H , WU L , et al . Ligustrazine disrupts lipopolysaccharide-activated NLRP3 inflammasome pathway associated with inhibition of Toll-like receptor 4 in hepatocytes [J ] . Biomed Pharmacother , 2016 , 78 : 204 - 209 .
TU T , CALABRO S R , LEE A M , et al . Hepatocytes in liver injury:victim,bystander,or accomplice in progressive fibrosis? [J ] . J Gastroenterol Hepatol , 2015 , 30 ( 12 ): 1696 - 1704 .
GUPTA G , KHADEM F , UZONNA J E . Role of hepatic stellate cell(HSC)-derived cytokines in hepatic inflammation and immunity [J ] . Cytokine , 2019 , 124 : 154542 .
VASTA J D , RAINES R T . Collagen prolyl 4-hydroxylase as a therapeutic target [J ] . J Med Chem , 2018 , 61 ( 23 ): 10403 - 10411 .
FABREGAT I , MORENO-CÀCERES J , SÁNCHEZ A , et al . TGF-β signalling and liver disease [J ] . FEBS J , 2016 , 283 ( 12 ): 2219 - 2232 .
GHAFOORY S , VARSHNEY R , ROBISON T , et al . Platelet TGF-β 1 deficiency decreases liver fibrosis in a mouse model of liver injury [J ] . Blood Adv , 2018 , 2 ( 5 ): 470 - 480 .
PUCHE J E , SAIMAN Y , FRIEDMAN S L . Hepatic stellate cells and liver fibrosis [J ] . Compr Physiol , 2013 , 3 ( 4 ): 1473 - 1492 .
ALEGRE F , PELEGRIN P , FELDSTEIN A E . Inflam-masomes in liver fibrosis [J ] . Semin Liver Dis , 2017 , 37 ( 2 ): 119 - 127 .
GARCIA-MARTINEZ I , SANTORO N , CHEN Y L , et al . Hepatocyte mitochondrial DNA drives nonalcoholic steatohepatitis by activation of TLR9 [J ] . J Clin Invest , 2016 , 126 ( 3 ): 859 - 864 .
BOARU S G , BORKHAM-KAMPHORST E , VAN DE LEUR E , et al . NLRP3 inflammasome expression is driven by NF-κB in cultured hepatocytes [J ] . Biochem Biophys Res Commun , 2015 , 458 ( 3 ): 700 - 706 .
PAROLA M , PINZANI M . Liver fibrosis:Pathophysiology,pathogenetic targets and clinical issues [J ] . Mol Aspects Med , 2019 , 65 : 37 - 55 .
WU J , LIN S , WAN B , et al . pyroptosis in liver disease:new insights into disease mechanisms [J ] . Aging Dis , 2019 , 10 ( 5 ): 1094 - 1108 .
SEKI E , BRENNER D A . Recent advancement of mole-cular mechanisms of liver fibrosis [J ] . J Hepatobiliary Pancreat Sci , 2015 , 22 ( 7 ): 512 - 518 ..
STROWIG T , HENAO-MEJIA J , ELINAV E , et al . Inflammasomes in health and disease [J ] . Nature , 2012 , 481 ( 7381 ): 278 - 286 .