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·药学研究·
骨化三醇通过VDR/Ca /细胞焦亡信号通路逆转脓毒症免疫抑制 Δ
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尚圣兰 1, 2* ,邹 硕 ,魏宇琪 ,余梦辰 ,周 帆 ,赵 燕 ,余爱荣 (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)
中图分类号 R965 文献标志码 A 文章编号 1001-0408(2025)18-2232-06
DOI 10.6039/j.issn.1001-0408.2025.18.03
摘 要 目的 探讨骨化三醇对脓毒症免疫抑制的影响及可能机制。方法 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 水平。结果 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
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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 水平均显著升高(P<0.05)。
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结论 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 ,进而驱
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动NLRP3/caspase-1介导的细胞焦亡途径来实现的。
关键词 骨化三醇;脓毒症;免疫抑制;细胞焦亡;Ca 2+
Calcitriol reverses sepsis-induced immunosuppression via VDR/Ca /pyroptosis signaling pathway
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SHANG Shenglan ,ZOU Shuo ,WEI Yuqi ,YU Mengchen ,ZHOU Fan ,ZHAO Yan ,YU Airong 2
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(1. School of Medicine, Wuhan University of Science and Technology, Wuhan 430065, China;2. Dept. of
Clinical Pharmacy, General Hospital of Central Theater Command of PLA, Wuhan 430070, China;3. School of
Pharmacy, Hubei University of Science and Technology, Hubei Xianning 437100, China)
ABSTRACT OBJECTIVE To investigate the effects of calcitriol on sepsis-induced immunosuppression and its potential
mechanism. METHODS 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 mice 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 levels. RESULTS Compared with CLP group, 7-day survival rate and serum levels of TNF-α, IL-6 and IL-1β
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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,
Δ 基金项目 国家自然科学基金项目(No.82304576);中国博士后
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科学基金项目(No.2022M713859);湖北省自然科学基金项目(No. caspase-1 activity, LDH release, and Ca levels were all
2022CFB879);武汉市知识创新专项(No.2022020801020521) increased significantly in calcitriol group (P<0.05).
*第一作者 主管药师,硕士生导师,博士。研究方向:抗炎与抗感 CONCLUSIONS Calcitriol can reverse sepsis-induced
染药物药理学。E-mail:s_shang0818@163.com
immunosuppression, and the mechanism of action may be
# 通信作者 主任药师,硕士生导师,博士。研究方向:临床药学。
E-mail:yarfwy@163.com achieved by the binding of calcitriol to vitamin D receptor,
· 2232 · China Pharmacy 2025 Vol. 36 No. 18 中国药房 2025年第36卷第18期

