LIU Jia-jing,LI Qiu-yi,MA Pei-guang,et al.Polydatin Ameliorated Colonic Inflammation via Precluding Phosphorylation of PKCθ/STAT3 Pathway to Inhibit Th17 Cells in Mice with Ulcerative Colitis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):40-45.
LIU Jia-jing,LI Qiu-yi,MA Pei-guang,et al.Polydatin Ameliorated Colonic Inflammation via Precluding Phosphorylation of PKCθ/STAT3 Pathway to Inhibit Th17 Cells in Mice with Ulcerative Colitis[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(17):40-45. DOI: 10.13422/j.cnki.syfjx.20211739.
Polydatin Ameliorated Colonic Inflammation via Precluding Phosphorylation of PKCθ/STAT3 Pathway to Inhibit Th17 Cells in Mice with Ulcerative Colitis
To investigate the therapeutic effect of polydatin on ulcerative colitis (UC) in mice and its regulation of protein kinase C
θ
(PKC
θ
)/signal transducer and activator of transcription 3(STAT3) signaling on T helper cell 17(Th17) and its mechanism in the treatment of UC.
Method
2
The 32 male C57BL/6 mice were randomly divided into normal group, model group, polydatin group (0.045 g·kg
-1
) and sulfasalazine group (0.5 g·kg
-1
). The UC model was established by giving 3% dextran sodium sulfate (DSS) solution to free drinking water in mice. Polydatin and sulfasalazine groups were given by gavage 0.5 h before modeling for 7 days. The normal group and model group were given the same amount of normal saline. After the last administration, the colonic tissue was taken and hematoxylin-eosin (HE) was used to observe the pathological changes of colonic tissue. Flow cytometry was used to detect the proportion of Th17 in the lamina propria of colonic mucosa. The expression of interleukin-17A (IL-17A) in serum was detected by enzyme-linked immunosorbent assay (ELISA). Polydatin was added to CD4
+
T cells purified from spleen of C57BL/6 mice by magnetic-activated cell sorting (MACS) under the stimulation of cell stimulation cocktail
in vitro
in order to detect its impact on PKC
θ
and STAT3 phosphorylation.
Result
2
Compared with normal group, the body weight was significantly decreased, and disease activity index (DAI) scores of the model group was significantly increased (
P
<
0.01), the colonic mucosal epithelium was damaged and inflammatory cells infiltration in the mucosa and submucosa was obvious, the proportion of Th17 in the lamina propria of colonic mucosa was significantly increased (
P
<
0.01), and the content of serum IL-17A was significantly increased (
P
<
0.01). Compared with the model group, the weight and DAI score of polydatin and sulfasalazine groups were significantly improved (
P
<
0.01), the degree of colon tissue damage was significantly improved, the proportion of Th17 in colon mucosa lamina propria was significantly decreased (
P
<
0.01), and the content of IL-17A in serum was significantly decreased (
P
<
0.01).
In vitro
experiments showed that polydatin could significantly inhibit the phosphorylation of PKC
θ
and STAT3 in Th17 (
P
<
0.01) as well as IL-17A secretion.
Conclusion
2
Polydatin can improve the ulcerative colitis in mice via inhibiting the phosphorylation of PKC
CHATILA T , SILVERMAN L , MILLER R , et al . Mechanisms of T cell activation by the calcium ionophore ionomycin [J]. J Immunol , 1989 , 143 ( 4 ): 1283 - 1289 .
ZHANG E Y , KONG K F , ALTMAN A . The yin and yang of protein kinase C-theta (PKC θ ):a novel drug target for selective immunosuppression [J]. Adv Pharmacol , 2013 , 66 : 267 - 312 .
LITHERLAND G J , ELIAS M S , HUI W , et al . Protein kinase C isoforms zeta and iota mediate collagenase expression and cartilage destruction via STAT3-and ERK-dependent c-fos induction [J]. J Biol Chem , 2010 , 285 ( 29 ): 22414 - 22425 .
YAO J , WANG J Y , LIU L , et al . Polydatin ameliorates DSS-induced colitis in mice through inhibition of nuclear factor-kappaB activation [J]. Planta Med , 2011 , 77 ( 5 ): 421 - 427 .
PERITORE A F , D'AMICO R , CORDARO M , et al . PEA/polydatin:anti-inflammatory and antioxidant approach to counteract DNBS-induced colitis [J]. Antioxidants (Basel) , 2021 , 10 ( 3 ): 464 .
WAN Z , ZHOU Z , LIU Y , et al . Regulatory T cells and T helper 17 cells in viral infection [J]. Scand J Immunol , 2020 , 91 ( 5 ): e12873 .
KREBS C F , SCHMIDT T , RIEDEL J H , et al . T helper type 17 cells in immune-mediated glomerular disease [J]. Nat Rev Nephrol , 2017 , 13 ( 10 ): 647 - 659 .
UENO A , JEFFERY L , KOBAYASHI T , et al . Th17 plasticity and its relevance to inflammatory bowel disease [J]. J Autoimmun , 2018 , 87 : 38 - 49 .
HUANG K P . The mechanism of protein kinase C activation [J]. Trends Neurosci , 1989 , 12 ( 11 ): 425 - 432 .
MÉRIDA I , ARRANZ-NICOLÁS J , RODRÍGUEZ-RODRÍGUEZ C , et al . Diacylglycerol kinase control of protein kinase C [J]. Biochem J , 2019 , 476 ( 8 ): 1205 - 1219 .
ALTMAN A , KONG K F . Protein kinase C inhibitors for immune disorders [J]. Drug Discov Today , 2014 , 19 ( 8 ): 1217 - 1221 .
KWON M J , MA J , DING Y , et al . Protein kinase C θ promotes Th17 differentiation via upregulation of STAT3 [J]. J Immunol , 2012 , 188 ( 12 ): 5887 - 5897 .
Nano Oral Colon Targeted Drug Delivery System in Treatment of Ulcerative Colitis: A Review
Comparison of Pharmacokinetics and Tissue Distribution of Free Anthraquinones and Gallic Acid in Mice with Ulcerative Colitis Before and After Processing of Rhei Radix et Rhizoma Carbonisata
Mechanisms of Zhuyuwan in Treating both Intrahepatic Cholestasis and Ulcerative Colitis Based on Homotherapy for Heteropathy
Shaoyaotang Containing Serum Mediates Fas/FasL Pathway to Inhibit Lipopolysaccharide Induced Inflammation and Apoptosis of Caco-2 Cells
Shaoyaotang Restores Th17/Treg Cell Balance by Regulating Glucose Metabolism Reprogramming in Treatment of Ulcerative Colitis
Related Author
ZHAO Feiyan
ZHU Wenting
TAN Lin
LUO Wenyu
WANG Xiaoya
BI Xin
WANG Xuecheng
WU Zhenfeng
Related Institution
Jiangxi University of Chinese Medicine
College of Food Science and Technology,Nanchang University
School of Basic Medical Sciences, Chengdu University of Traditional Chinese Medicine(TCM)
School of Basic Medical Sciences, Guangzhou University of Chinese Medicine
Deng Zhongjia Inheritance Studio,Chengdu University of TCM