LI Si-han,LIAN Dong-yin,ZHANG Guang-ping,et al.Inhibitory Effect and Mechanism of Jingulian Extract on LPS-induced RAW264.7 Cell Inflammatory Response Based on PI3K/Akt Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(14):29-35.
LI Si-han,LIAN Dong-yin,ZHANG Guang-ping,et al.Inhibitory Effect and Mechanism of Jingulian Extract on LPS-induced RAW264.7 Cell Inflammatory Response Based on PI3K/Akt Signaling Pathway[J].Chinese Journal of Experimental Traditional Medical Formulae,2021,27(14):29-35. DOI: 10.13422/j.cnki.syfjx.20211401.
Inhibitory Effect and Mechanism of Jingulian Extract on LPS-induced RAW264.7 Cell Inflammatory Response Based on PI3K/Akt Signaling Pathway
To explore the inhibitory effect and mechanism of Jingulian extract (JGL) on inflammation.
Method
2
The following groups were set up in this study: a control group (10% fetal bovine serum), a lipopolysaccharide (LPS) model group (0.5 mg·L
-1
), and JGL groups (10, 20, 40, 60, 80, 120, 160, 200, 250, 300 mg·L
-1
+ 0.5 mg·L
-1
LPS). The RAW264.7 cells were cultured for 24 hours. Cell proliferation was detected by cell counting kit-8 (CCK-8) assay. Nitric oxide (NO) release was detected by Griess assay. The release of cytokines interleukin (IL)-1
β
, IL-6, IL-10, and tumor necrosis factor (TNF)-
α
was determined by enzyme linked immunosorbent assay (ELISA). The expression of inducible nitric oxide synthase (iNOS) and intraprostaglandin peroxidase synthase 2 (PTGS2)/cyclooxygenase-2 (COX-2) was measured by real-time fluorescence-based quantitative polymerase chain reaction (Real-time PCR) and the activation of key proteins in the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway by Western blot.
Result
2
Compared with the control group, LPS (0.5 mg·L
-1
)could promote the proliferation of RAW264.7 cells after stimulation for 24 hours (
P
<
0.01). Compared with the model group, JGL had no significant effect on cell proliferation. Compared with the control group, LPS (0.5 mg·L
-1
)increased the release of NO, IL-1
β
, IL-6, IL-10, and TNF-
α
(
P
<
0.01). Compared with the model group, JGL (20-300 mg·L
-1
)inhibited the release of NO in a dose-dependent manner after stimulation for 24 hours (
P
<
0.05) and reduced IL-1
β
, IL-6, and IL-10 (
P
<
0.05,
P
<
0.01), but no obvious inhibition on the release of TNF-
α
was observed. LPS (0.5 mg·L
-1
) could induce the expression of iNOS and PTGS2/COX-2 genes as compared with the control group (
P
<
0.05,
P
<
0.01). JGL could down-regulate the mRNA expression of iNOS and PTGS2/COX-2 genes as compared with the model group (
P
<
0.05,
P
<
0.01). LPS (0.5 mg·L
-1
) could activate the PI3K/Akt pathway (
P
<
0.01) as compared with the control group, while JGL (10, 20, 40, and 80 mg·L
-1
) decreased the expression of PI3K-p110, p-p85, and p-Akt (
P
<
0.01), and inhibited the activation of PI3K/Akt pathway.
Conclusion
2
JGL extract could significantly inhibit the inflammatory response and activation of the PI3K/Akt pathway induced by LPS in RAW264.7 cells. The anti-inflammatory effect was related to the inhibition of the PI3K/Akt pathway.
关键词
Keywords
references
LIN W W , KARIN M . A cytokine-mediated link between innate immunity,inflammation,and cancer [J]. J Clin Invest , 2007 , 117 ( 5 ): 1175 - 1183 .
COHEN J . The immunopathogenesis of sepsis [J]. Nature , 2002 , 420 ( 6917 ): 885 - 891 .
ASHRAF S , CHA B H , KIM J S , et al . Regulation of senescence associated signaling mechanisms in chondrocytes for cartilage tissue regeneration [J]. Osteoarthritis Cartilage , 2016 , 24 ( 2 ): 196 - 205 .
NARAZAKI M , TANAKA T , KISHIMOTO T . The role and therapeutic targeting of IL-6 in rheumatoid arthritis [J]. Expert Rev Clin Immunol , 2017 , 13 ( 6 ): 535 - 551 .
LINGHU K G , MA Q S , ZHAO G D , et al . Leocarpinolide B attenuates LPS-induced inflammation on RAW264.7 macrophages by mediating NF- κ B and Nrf2 pathways [J]. Eur J Pharmacol , 2020 , 868 : 172854 .
PENA O M , PISTOLIC J , RAJ D , et al . Endotoxin tolerance represents a distinctive state of alternative polarization (M2) in human mononuclear cells [J]. J Immunol , 2011 , 186 ( 12 ): 7243 - 7254 .
BRENNER S , PRÖSCH S , SCHENKE-LAYLAND K , et al . cAMP-induced Interleukin-10 promoter activation depends on CCAAT/enhancer-binding protein expression and monocytic differentiation [J]. J Biol Chem , 2003 , 278 ( 8 ): 5597 - 5604 .
HICKEY F B , BRERETON C F , MILLS K H G . Adenylate cycalse toxin of Bordetella pertussis inhibits TLR-induced IRF-1 and IRF-8 activation and IL-12 production and enhances IL-10 through MAPK activation in dendritic cells [J]. J Leukoc Biol , 2008 , 84 ( 1 ): 234 - 243 .
MARKMAN B , DIENSTMANN R , TABERNERO J . Targeting the PI3K/Akt/mTOR pathway-beyond rapalogs [J]. Oncotarget , 2010 , 1 ( 7 ): 530 - 543 .
MABUCHI S , KURODA H , TAKAHASHI R , et al . The PI3K/Akt/mTOR pathway as a therapeutic target in ovarian cancer [J]. Gynecol Oncol , 2015 , 137 ( 1 ): 173 - 179 .
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