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1.兰州大学,第一临床医学院,甘肃兰州
2.兰州大学,第一医院麻醉科,甘肃兰州
马玉清,E-mail:myq2392466@163.com
纸质出版日期:2025-01-30,
收稿日期:2024-07-01,
修回日期:2024-09-08,
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龚禹, 雷娇, 张铭, 等. 芍药苷通过β-catenin/c-Myc通路抑制有氧糖酵解缓解小鼠脓毒症相关急性肾损伤[J]. 陆军军医大学学报, 2025,47(2):132-140.
GONG YU, LEI JIAO, ZHANG MING, et al. Paeoniflorin alleviates sepsis-associated acute kidney injury in mice by inhibiting aerobic glycolysis through the β-catenin/c-Myc pathway. [J]. Journal of army medical university, 2025, 47(2): 132-140.
龚禹, 雷娇, 张铭, 等. 芍药苷通过β-catenin/c-Myc通路抑制有氧糖酵解缓解小鼠脓毒症相关急性肾损伤[J]. 陆军军医大学学报, 2025,47(2):132-140. DOI: 10.16016/j.2097-0927.202406099.
GONG YU, LEI JIAO, ZHANG MING, et al. Paeoniflorin alleviates sepsis-associated acute kidney injury in mice by inhibiting aerobic glycolysis through the β-catenin/c-Myc pathway. [J]. Journal of army medical university, 2025, 47(2): 132-140. DOI: 10.16016/j.2097-0927.202406099.
目的
2
探究芍药苷(paeoniflorin,PF)在小鼠脓毒症相关急性肾损伤(sepsis-associated acute kidney injury, SA-AKI)中的作用及机制。
方法
2
采用腹腔注射脂多糖(lipopolysaccharide, LPS)的方法构建小鼠SA-AKI模型。将24只6~8周龄的雄性C57BL/6J小鼠(体质量为20~25 g),用随机数字表法分为4组(
n
=6): 对照组(Control组);模型组(LPS组),腹腔注射LPS(15 mg/kg);芍药苷组(LPS+PF组),LPS造模前30 min腹腔注射PF(50 mg/kg);β-catenin特异性激动剂BML284组(LPS+PF+BML284组),LPS造模前30 min,先腹腔注射PF(50 mg/kg),再腹腔注射BML284(10 mg/kg)。采用HE染色观察肾脏组织病理变化并进行Paller评分;采用ELISA检测血清肌酐(serum creatinine, Scr)、中性粒细胞明胶酶相关脂质运载蛋白(neutrophil gelatinase-associated lipocalin,NGAL)和乳酸,以及肾组织己糖激酶2(hexokinase2,HK2)、乳酸脱氢酶A(lactate dehydrogenase A,LDHA)、白细胞介素-1β(interleukin-1β,IL-1β)和白细胞介素18(interleukin-18,IL-18)的含量;Western blot检测总β-
连环蛋白(beta-catenin, β-catenin)、磷酸化β-catenin
Y654
(p-β-catenin
Y654
)、细胞核β-catenin以及c-骨髓细胞瘤癌基因蛋白(c-myelocytomatosis oncogene gene, c-Myc)的表达。
结果
2
与Control组比较,LPS组HE染色显示肾脏组织受损,Paller评分升高(
P
<
0.05),血清Scr、NGAL增加(
P
<
0.05),肾组织HK2、LDHA及血清乳酸等有氧糖酵解指标和IL-1β、IL-18含量增多(
P
<
0.05),肾组织总β-catenin、p-β-catenin
Y654
、细胞核β-catenin以及c-Myc表达上升(
P
<
0.05)。与LPS组相比,LPS+PF组HE染色显示肾脏组织损伤减轻,Paller评分下降(
P
<
0.05),血清Scr、NGAL降低(
P
<
0.05),肾组织HK2、LDHA及血清乳酸等有氧糖酵解指标和IL-1β、IL-18含量减少(
P
<
0.05),肾组织总β-catenin、p-β-catenin
Y654
、细胞核β-catenin以及c-Myc表达下调(
P
<
0.05)。与LPS+PF组比较,LPS+PF+BML284组HE染色显示肾脏组织受损加重,Paller评分升高(
P
<
0.05),血清Scr、NGAL增加(
P
<
0.05),肾组织HK2、LDHA及血清乳酸等有氧糖酵解指标和IL-1β、IL-18含量增多(
P
<
0.05),肾组织总β-catenin、p-β-catenin
Y654
、细胞核β-catenin以及c-Myc表达上升(
P
<
0.05)。
结论
2
PF可以缓解SA-AKI,其机制可能是通过抑制β-catenin/c-Myc通路,降低肾组织有氧糖酵解水平和炎症反应。
Objective To investigate the role and mechanism of paeoniflorin (PF) in sepsis-associated acute kidney injury (SA-AKI) in mice. Methods Mouse SA-AKI model was constructed by intraperitoneal injection of 15 mg/kg LPS. Twenty-four male C57BL/6J mice (6~8 weeks old, weighing 20~25 g) were randomly divided into Control group, model group, PF group (intraperitoneally injected with 50 mg/kg PF 30 min before LPS administration), and β-catenin specific agonist BML284 group (10 mg/kg BML284 by intraperitoneal injection after 50 mg/kg PF administration). The renal histopathological changes were observed by HE staining and Paller scoring. ELISA was used to determine the contents of serum creatinine (Scr), neutrophil gelatinase-associated lipocalin (NGAL) and lactate, and renal contents of hexokinase 2 (HK2), lactate dehydrogenase A (LDHA), IL-1β and
IL-18. Western blotting was performed to detect the expression of total β-catenin, p-β-catenin
Y654
, nucleus β-catenin and c-Myc. Results Compared with the Control group, the LPS group showed obviously damaged renal tissue, higher Paller score (
P
<
0.05), increased serum Scr and NGAL levels (
P
<
0.05), elevated renal contents of aerobic glycolytic indexes such as HK2, LDHA and serum lactate, as well as contents of IL-1β and IL-18 (
P
<
0.05), and enhanced expression of total β-catenin, p-β-catenin
Y654
, nucleus β-catenin and c-Myc in the renal tissue (
P
<
0.05). PF treatment attenuated the renal tissue damage, decreased Paller score (
P
<
0.05), reduced serum Scr and NGAL levels (
P
<
0.05), HK2, LDHA and serum lactate levels, and contents of IL-1β and IL-18 in renal tissues (
P
<
0.05), and down-regulated the renal expression of total β-catenin, p-β-catenin
Y654
, nucleus β-catenin and c-Myc when compared with the levels in the model group (
P
<
0.05). While, addition of BML284 reversed above effects of PF treatment with significant differences (
P
<
0.05). Conclusion PF can alleviate SA-AKI, and its mechanism may be through its inhibiting the β-catenin/c-Myc pathway, thus reducing the aerobic glycolysis level and inflammatory response in renal tissue.
脓毒症相关急性肾损伤芍药苷有氧糖酵解β-catenin/c-Myc通路BML284
sepsis-associated acute kidney injurypaeoniflorinaerobic glycolysisβ-catenin/c-MycBML284
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