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1.武汉科技大学医学院,武汉 430065
2.中部战区总医院临床药学科,武汉 430070
3.湖北科技学院药学院,湖北 咸宁 437100
主管药师,硕士生导师,博士。研究方向:抗炎与抗感染药物药理学。E-mail:s_shang0818@163.com
主任药师,硕士生导师,博士。研究方向:临床药学。E-mail:yarfwy@163.com
收稿日期:2025-05-13,
修回日期:2025-08-12,
录用日期:2025-08-25,
纸质出版日期:2025-09-30
移动端阅览
尚圣兰,邹硕,魏宇琪,等.骨化三醇通过VDR/Ca2+/细胞焦亡信号通路逆转脓毒症免疫抑制[J].中国药房,2025,36(18):2232-2237.
SHANG Shenglan,ZOU Shuo,WEI Yuqi,et al.Calcitriol reverses sepsis-induced immunosuppression via VDR/Ca2+/pyroptosis signaling pathway[J].ZHONGGUO YAOFANG,2025,36(18):2232-2237.
尚圣兰,邹硕,魏宇琪,等.骨化三醇通过VDR/Ca2+/细胞焦亡信号通路逆转脓毒症免疫抑制[J].中国药房,2025,36(18):2232-2237. DOI: 10.6039/j.issn.1001-0408.2025.18.03.
SHANG Shenglan,ZOU Shuo,WEI Yuqi,et al.Calcitriol reverses sepsis-induced immunosuppression via VDR/Ca2+/pyroptosis signaling pathway[J].ZHONGGUO YAOFANG,2025,36(18):2232-2237. DOI: 10.6039/j.issn.1001-0408.2025.18.03.
目的
2
探讨骨化三醇对脓毒症免疫抑制的影响及可能机制。
方法
2
采用盲肠结扎穿孔术(CLP)建立脓毒症免疫抑制小鼠模型,检测假手术组、CLP组和骨化三醇(1 μg/kg)组小鼠7 d生存率和血清中肿瘤坏死因子α(TNF-α)、白细胞介素6(IL-6)、IL-1β水平,观察肺组织形态学变化。选用小鼠巨噬细胞系RAW264.7细胞建立脂多糖(LPS)耐受细胞(即脓毒症免疫抑制细胞模型),检测培养基组、LPS组、LPS耐受组和骨化三醇(5 μmol/L)组细胞上清液中TNF-α、IL-6水平和细胞中IL-1β、核苷酸结合结构域富含亮氨酸重复序列和含热蛋白结构域受体3(NLRP3)、IL-18、胱天蛋白酶1(caspase-1)mRNA表达量,以及碘化丙啶(PI)阳性率、caspase-1活性、乳酸脱氢酶(LDH)漏出率和Ca
2+
水平。
结果
2
与CLP组比较,骨化三醇组小鼠的7 d生存率和血清中TNF-α、IL-6和IL-1β水平均显著升高(
P
<0.05),肺组织损伤明显减轻。与LPS耐受组比较,骨化三醇组细胞上清液中TNF-α和IL-6水平,以及细胞中IL-1β、NLRP3、IL-18、caspase-1 mRNA表达量和PI阳性率、caspase-1活性、LDH漏出率、Ca
2+
水平均显著升高(
P
<0.05)。
结论
2
骨化三醇可逆转脓毒症免疫抑制,该作用机制可能是通过骨化三醇与维生素D受体结合,从而促进内质网释放Ca
2+
,进而驱动NLRP3/caspase-1介导的细胞焦亡途径来实现的。
OBJECTIVE
2
To investigate the effects
of calcitriol on sepsis-induced immunosuppression and its potential mechanism.
METHODS
2
A sepsis-induced immunosuppression mice model was established using cecal ligation and puncture (CLP). The 7-day survival rate, serum levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and IL-1β were determined in sham operation group, CLP group and calcitriol group (1 μg/kg); the morphological changes of lung tissue in mice were observed. Lipopolysaccharide (LPS) tolerance macrophage models (representing sepsis-induced immunosuppression) were established using mi
ce macrophage cell line RAW264.7 cells. The levels of TNF-α and IL-6 in cell supernatants as well as mRNA expressions of IL-1β, nucleotide-binding domain leucine-rich repeat and pyrin domain-containing receptor 3 (NLRP3), IL-18 and caspase-1
were assessed in culture medium group, LPS group, LPS tolerance group, and calcitriol (5 μmol/L) group. The following parameters were measured: propidium iodide (PI)-positive cell ratio, caspase-1 activity, lactate dehydrogenase (LDH) release, and Ca
2+
levels.
RESULTS
2
Compared with CLP group, 7-day survival rate and serum levels of TNF-α, IL-6 and IL-1β were increased significantly in calcitriol group (
P
<0.05). Additionally, pulmonary tissue damage was markedly attenuated in calcitriol group. Compared with LPS tolerance group, the levels of TNF-α and IL-6 in cell supernatants, mRNA expressions of IL-1β, NLRP3, IL-18 and caspase-1, PI-positive cell ratio, caspase-1 activity, LDH release, and Ca
2+
levels were all increased significantly in calcitriol group (
P
<0.05).
CONCLUSIONS
2
Calcitriol can reverse sepsis-induced immunosuppression, and the mechanism of action may be achieved by the binding of calcitriol to vitamin D receptor, which promotes the release of Ca
2+
from the endoplasmic reticulum, thereby driving the NLRP3/caspase-1-mediated pyroptosis pathway.
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DENG D M , LI X L , LIU C , et al . Systematic investigation on the turning point of over-inflammation to immunosuppression in CLP mice model and their characteristics [J ] . Int Immunopharmacol , 2017 , 42 : 49 - 58 .
LEAF D E , RAED A , DONNINO M W , et al . Rando-mized controlled trial of calcitriol in severe sepsis [J ] . Am J Respir Crit Care Med , 2014 , 190 ( 5 ): 533 - 541 .
BOSMANN M , WARD P A . The inflammatory response in sepsis [J ] . Trends Immunol , 2013 , 34 ( 3 ): 129 - 136 .
QIU P , LIU Y , ZHANG J . Review:the role and mechanisms of macrophage autophagy in sepsis [J ] . Inflammation , 2019 , 42 ( 1 ): 6 - 19 .
CAVAILLON J M , ADIB-CONQUY M . Bench-to-bedside review:endotoxin tolerance as a model of leukocyte reprogramming in sepsis [J ] . Crit Care , 2006 , 10 ( 5 ): 233 .
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ATALE N , GUPTA S , YADAV U S , et al . Cell-death assessment by fluorescent and nonfluorescent cytosolic and nuclear staining techniques [J ] . J Microsc , 2014 , 255 ( 1 ): 7 - 19 .
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