广东省代谢病中西医结合研究中心//广东省代谢性疾病中医药防治重点实验室//粤港澳联合代谢病重点实验室//广东药科大学中医药研究院,广东 广州 510006
吴惠娟,硕士,研究方向:中医药防治糖脂代谢病,E-mail:wuhuijuan1024@163.com
韦曲星,并列第一作者,硕士,研究方向:糖脂代谢病的中西医结合研究,E-mail:tcmcrawer@163.com
收稿:2020-01-16,
纸质出版:2020-07-15
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吴惠娟,韦曲星,张盛昔等.甘露糖对巨噬细胞炎症反应的双向调节作用[J].中山大学学报(医学科学版),2020,41(04):549-557.
WU Hui-juan,WEI Qu-xing,ZHANG Sheng-xi,et al.Dual-directional Regulation Effects of Mannose on Inflammatory Response of Macrophages[J].Journal of Sun Yat-sen University(Medical Sciences),2020,41(04):549-557.
目的
2
探讨甘露糖(Man)对炎症反应的调控及其机制,为甘露糖在炎症疾病中的应用提供依据。
方法
2
利用不同浓度的甘露糖处理RAW264.7巨噬细胞24 h或48 h,细胞计数检测增殖情况。低浓度(2 mmol/L)和高浓度(20 mmol/L)Man预处理RAW264.7细胞12 h,然后脂多糖(LPS)处理8 h或24 h,收集mRNA、蛋白质及培养上清,通过Q-PCR、Western blot和ELISA检测炎症相关指标以及甘露糖受体(CD206)的变化。
结果
2
在5 mmol/L以下,细胞增殖随Man的浓度增加而增加;在5 mmol/L以上,则相反。和LPS处理相比,LPS + 甘露糖2 mmol/L(Man2)能够增高IL-1β、IL-12和TNF-α的mRNA水平以及蛋白水平(均
P
<
0.05);LPS + Man20显著抑制IL-1β、IL-12、TNF-α、IL-6和CCL2的mRNA水平和蛋白水平(均
P
<
0.05)。网络药理学预测甘露糖及其代谢产物的潜在作用靶点有包括AKT和STAT3在内的20个蛋白。Man2可协同LPS刺激AKT和STAT3的磷酸化(均
P
<
0.05),而Man20可抑制LPS诱导的AKT、p65和ERK磷酸化水平的增加(均
P
<
0.05)。单独甘露糖处理可抑制AKT、STAT3和p65的磷酸化(均
P
<
0.05)。
结论
2
不同浓度的甘露糖对炎症反应具有不同的作用。低浓度甘露糖能够促进LPS诱导的巨噬细胞炎症反应,而高浓度的甘露糖具有抑制LPS诱导的炎症反应,其机制与调控AKT、STAT3、p65和ERK的活性有关。
Objective
2
To explore the regulation and mechanism of mannose (Man) on inflammatory response
so as to provide the basis for application of Man in inflammatory diseases.
Methods
2
RAW264.7 macrophages were treated with different concentrations of Man for 24 h or 48 h
and the proliferation was detected by cell count. RAW264.7 cells were pretreated with low concentration (2 mmol/L) and high concentration (20 mmol/L) of Man for 12 h
followed by treatment with lipopolysaccharide (LPS) for 8 h or 24 h more. mRNA
protein and culture supernatant were collected
and the inflammation related cytokines
proteins and mannose receptor (CD206) were detected by Q-PCR
Western blot
and ELISA.
Results
2
The cell proliferation was increased with the increase of Man concentration under 5 mmol/L
while it was decreased with the increase of Man concentration over 5 mmol/L. Compared with LPS treatment
2 mmol/L mannose (Man2) plus LPS increased the mRNA levels of IL-1β
IL-12 and TNF-α and the protein levels (all
P
<
0.05)
while Man20 + LPS treatment significantly decreased the mRNA levels of IL-1β
IL-12
TNF-α
IL-6
and CCL2 and the protein levels (all
P
<
0.05). The potential targets of network pharmacology for Man and its metabolites were 20 proteins
including AKT and STAT3. Furthermore
the phosphorylation levels of AKT and STAT3 (all
P
<
0.05) were increased in Man2 + LPS group and the phosphorylation levels of AKT
p65 and ERK (all
P
<
0.05) were decreased in Man20 + LPS group compared with LPS group. The phosphorylation levels of AKT
p65 and STAT3 (all
P
<
0.05) were decreased in Man20 group compared with control group.
Conclusions
2
Different concentrations of mannose have various effects on inflammatory response. Low concentration mannose promotes macrophage inflammatory response induced by LPS
while high concentration mannose inhibits LPS-induced inflammatory response. And this mechanism is related to the regulation of AKT
STAT3
p65
and ERK activities.
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