中国畜牧兽医 ›› 2025, Vol. 52 ›› Issue (8): 3907-3917.doi: 10.16431/j.cnki.1671-7236.2025.08.039

• 基础兽医 • 上一篇    

SOCE调控亚临床低钙血症奶牛单核巨噬细胞吞噬和黏附功能的研究

李思瑶1, 季子崴1, 李蕾1, 张靖淇1, 岳柏晨1, 尹玉凤1, 徐闯2, 杨威3, 张冰冰1   

  1. 1. 黑龙江八一农垦大学生命科学技术学院, 大庆 163319;
    2. 中国农业大学动物医学院, 北京 100193;
    3. 黑龙江八一农垦大学动物科技学院, 大庆 163319
  • 收稿日期:2024-12-20 发布日期:2025-08-02
  • 通讯作者: 张冰冰 E-mail:zhangbingbing613@gmail.com
  • 作者简介:李思瑶,E-mail:962825085@qq.com。
  • 基金资助:
    国家重点研发计划青年科学家项目(2023YFD1802100);黑龙江省“龙江科技英才”春雁支持计划青年英才项目(CYQN24048)

Regulation of Phagocytic and Adhesion Functions of Mononuclear Macrophages by SOCE in Subclinical Hypocalcemia Dairy Cows

LI Siyao1, JI Ziwei1, LI Lei1, ZHANG Jingqi1, YUE Baichen1, YIN Yufeng1, XU Chuang2, YANG Wei3, ZHANG Bingbing1   

  1. 1. College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, China;
    2. College of Veterinary Medicine, China Agricultural University, Beijing 100193, China;
    3. College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163319, China
  • Received:2024-12-20 Published:2025-08-02

摘要: 【目的】 探究钙池操控的钙内流(store operated Ca2+ entry,SOCE)对奶牛单核巨噬细胞吞噬和黏附功能的影响。【方法】 采集健康奶牛(对照,Con)及亚临床低钙血症奶牛(hypocalcemia,Hyp)外周血液,利用磁珠法分离并体外培养CD14单核巨噬细胞。取亚临床低钙血症奶牛单核巨噬细胞分为3组,分别为Hyp、毒胡萝卜素(thapsigarsin,TG)处理组(Hyp+TG)和2-氨基乙基联苯基硼酸酯(2-aminoethyl diphenylborinate,2-APB)处理组(Hyp+2-APB组)。通过流式细胞术检测细胞内Ca2+水平,利用实时荧光定量PCR和Western blotting分别检测SOCE相关因子mRNA和蛋白表达量;通过激光共聚焦和免疫荧光检测单核巨噬细胞吞噬和黏附情况,并检测单核巨噬细胞吞噬和黏附因子的表达。【结果】 流式细胞术检测结果显示,与Con组相比,Hyp组单核巨噬细胞内Ca2+水平极显著降低(P<0.01)。实时荧光定量PCR结果显示,与Con组相比,Hyp组单核巨噬细胞中钙离子释放激活的钙通道蛋白1(calcium release-activated calcium modulator 1,ORAI1)、基质相互作用分子1(stromal interaction molecule 1,STIM1)、STIM2、选择素L(selectin L,SELL)、ORAI2、ORAI3以及吞噬因子髓过氧化物酶(myeloperoxidase,MPO)基因表达量均极显著或显著降低(P<0.01;P<0.05)。Western blotting结果显示,与Con组相比,Hyp组单核巨噬细胞中ORAI2、ORAI3、STIM2、ORAI1和STIM1蛋白表达量极显著或显著降低(P<0.01;P<0.05)。同时,与Con组相比,Hyp组单核巨噬细胞吞噬和黏附能力显著或极显著降低(P<0.05;P<0.01)。TG处理后,与Hyp组相比,亚临床低钙血症奶牛单核巨噬细胞中ORAI1、ORAI2、MPOORAI3、STIM1、STIM2和SELL基因表达量显著或极显著升高(P<0.05;P<0.01),ORAI1、ORAI3、STIM1、STIM2和ORAI2蛋白表达水平显著或极显著上调(P<0.05;P<0.01);细胞吞噬、黏附能力均显著或极显著增强(P<0.05;P<0.01)。2-APB处理后,与Hyp组相比,亚临床低钙血症奶牛单核巨噬细胞中ORAI1、ORAI2、MPOORAI3、STIM1、STIM2和SELL基因表达量显著或极显著降低(P<0.05;P<0.01),ORAI2、STIM2、ORAI1、ORAI3和STIM1蛋白表达量显著或极显著降低(P<0.05;P<0.01);细胞吞噬、黏附能力极显著或显著减弱(P<0.01;P<0.05)。【结论】 TG激活SOCE后,亚临床低钙血症奶牛单核巨噬细胞内Ca2+水平升高,细胞吞噬和黏附能力增强;2-APB抑制SOCE后,亚临床低钙血症奶牛单核巨噬细胞内Ca2+水平降低,细胞的吞噬和黏附功能减弱,表明SOCE参与调控单核巨噬细胞的吞噬和黏附作用。

关键词: 钙池操控的钙内流(SOCE); 单核巨噬细胞; 吞噬; 黏附

Abstract: 【Objective】 The purpose of this experiment was to explore the effect of store operated Ca2+ entry (SOCE) on the phagocytic and adhesion functions of mononuclear macrophages in dairy cows. 【Method】 Peripheral blood of healthy (control,Con)and subclinical hypocalcemia dairy cows (hypocalcemia,Hyp) was collected,and CD14 mononuclear macrophages in the blood were isolated and cultured in vitro using magnetic beads.The mononuclear macrophages of subclinical hypocalcemia dairy cows were divided into three groups: Hyp, thapsigarsin (TG) treatment group (Hyp+TG) and 2-aminoethyl diphenylborinate (2-APB) treatment group (Hyp+2-APB).The intracellular Ca2+ level was detected by flow cytometry.Real-time quantitative PCR and Western blotting were used to detect the mRNA and protein expression of SOCE-related factors.The phagocytosis and adhesion of mononuclear macrophages were detected by laser confocal and immunofluorescence,and the expression of phagocytosis and adhesion factors of mononuclear macrophages was detected. 【Result】 Flow cytometry analysis showed that,compared with Con group,the intracellular Ca2+ level of mononuclear macrophages in Hyp group was extremely significantly decreased (P<0.01).Real-time quantitative PCR results showed that,compared with Con group,the expression of calcium release-activated calcium modulator 1 (ORAI1),stromal interaction molecule 1 (STIM1),STIM2 and selectin L (SELL) genes of mononuclear macrophages in Hyp group were extremely significantly decreased (P<0.01),expression of ORAI2,ORAI3 and myeloperoxidase (MPO) genes were significantly decreased (P<0.05).Western blotting results showed that,compared with Con group,the expression of ORAI2,ORAI3,STIM2,ORAI1 and STIM1 proteins of mononuclear macrophages in Hyp group were extremely significant or significantly decreased (P<0.01 or P<0.05).Meanwhile,compared with Con group,the phagocytic and adhesion abilities of mononuclear macrophages in Hyp group were significantly or extremely significantly decreased (P<0.05 or P<0.01).After TG treatment,compared with Hyp group,the expression of ORAI1,ORAI2,MPO,ORAI3,STIM1,STIM2 and SELL genes in mononuclear macrophages of subclinical hypocalcemia dairy cows were significantly or extremely significantly increased (P<0.05 or P<0.01),the expression of ORAI1,ORAI3,STIM1,STIM2 and ORAI2 proteins were significantly or extremely significantly upregulated (P<0.05 or P<0.01).The phagocytic and adhesion abilities of cells were significantly or extremely significantly enhanced (P<0.05 or P<0.01).After 2-APB treatment,compared with Hyp group,the expression of ORAI1,ORAI2,MPO,ORAI3,STIM1,STIM2 and SELL genes in mononuclear macrophages of subclinical hypocalcemia dairy cows were significantly or extremely significantly decreased (P<0.05 or P<0.01),the expression of ORAI2,STIM2,ORAI1,ORAI3 and STIM1 proteins were significantly or extremely significantly decreased (P<0.05 or P<0.01).The phagocytic and adhesion abilities of cells were extremely significant or significantly weakened (P<0.01 or P<0.05). 【Conclusion】 After SOCE was activated by TG,the Ca2+ level in mononuclear macrophages of subclinical hypocalcemia dairy cows increased,and the phagocytic and adhesion abilities enhanced.After SOCE was inhibited by 2-APB,the intracellular Ca2+ level in mononuclear macrophages of subclinical hypocalcemia dairy cows decreased,and the phagocytic and adhesion functions weakened,which indicated that SOCE was involved in regulating the phagocytosis and adhesion of mononuclear macrophages.

Key words: store operated Ca2+ entry (SOCE); mononuclear macrophage; phagocytic; adhesion

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