天津农学院学报 ›› 2025, Vol. 32 ›› Issue (6): 68-75.doi: 10.19640/j.cnki.jtau.2025.06.010

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益生菌酸奶对小鼠免疫调节作用研究

许斐然1, 运立媛1,3,4,通信作者, 方曙光2, 郭晓娟2, 武岩峰2, 张民1,3,4,通信作者   

  1. 1.天津农学院,食品科学与生物工程学院,天津 300392;
    2.微康益生菌(苏州)股份有限公司,江苏 苏州 215200;
    3.农业农村部智慧养殖重点实验室,天津 300392;
    4.天津市主要作物智能育种重点实验室,天津 300392
  • 收稿日期:2024-11-28 发布日期:2025-12-26
  • 通讯作者: 张民(1972—),男,教授,博士,研究方向为食品化学与营养。E-mail:zhangmin@tjau.edu.cn;运立媛(1989—),女,讲师,博士,研究方向为食品化学与营养。E-mail:yunly1120@163.com。
  • 作者简介:许斐然(2000—), 男, 硕士在读, 研究方向为食品化学与营养。E-mail:x1255894448@163.com。
  • 基金资助:
    国家重点研发计划(2022YFF1100201); 天津农学院青年科技人才发展基金项目(2025QNKJ10)

Effect of probiotic yogurt on immune regulation in immunocompromised mice

Xu Feiran1, Yun Liyuan1,3,4,Corresponding Author, Fang Shuguang2, Guo Xiaojuan2, Wu Yanfeng2, Zhang Min1,3,4,Corresponding Author   

  1. 1. School of Food Science and Biological Engineering, Tianjin Agricultural University, Tianjin 300392, China;
    2. Wecare Probiotics Co., Ltd, Suzhou 215200, Jiangsu Province, China;
    3. Key Laboratory of Smart Breeding, Ministry of Agriculture and Rural Affairs, Tianjin 300392, China;
    4. Tianjin Key Laboratory of Intelligent Breeding of Major Crops, Tianjin 300392, China
  • Received:2024-11-28 Published:2025-12-26

摘要: 本研究探讨了复合益生菌酸奶对环磷酰胺诱导免疫抑制小鼠免疫功能的影响。50只ICR小鼠被随机分为对照组(NC)、模型组(MC)、低剂量组(LPYC, 浓度:109 CFU/250 g)、中剂量组(MPYC, 浓度:1010 CFU/250 g)和高剂量组(HPYC, 浓度:1011 CFU/250 g)。通过测定小鼠体重、脏器指数、脾脏组织形态、免疫球蛋白及免疫细胞因子表达量, 探究益生菌酸奶对免疫低下小鼠免疫功能的影响。结果显示, MPYC组和HPYC组的小鼠体质量增长显著高于MC组(P<0.05), 但低于NC组(P>0.05)。LPYC、MPYC和HPYC组小鼠的脾脏和胸腺指数均显著高于MC组(P<0.05), 但体质量增长量显著低于NC组小鼠(P>0.05)。HE染色表明, 复合益生菌酸奶改善了小鼠脾脏组织的形态。ELISA显示, 与MC组相比, 复合益生菌酸奶显著提高了小鼠血清免疫球蛋白(IgG和IgA)的表达(P<0.05)。qRT-PCR结果表明, 复合益生菌酸奶显著提高了小鼠血清细胞因子TNF-α、IL-6和IL-12的表达(P<0.05)。综上所述, 复合益生菌酸奶对改善免疫低下小鼠的免疫功能具有显著效果。

关键词: 复合益生菌, 酸奶, 双歧杆菌, 免疫低下, 免疫活性

Abstract: This study explores the effects of a composite probiotic yogurt on the immune function of mice with immune suppression induced by cyclophosphamide. Fifty ICR mice were randomly divided into a control group(NC), a model group (MC), a low-dose group(LPYC, concentration: 109 CFU/250 g), a medium-dose group(MPYC, concentration: 1010 CFU/250 g), and a high-dose group(HPYC, concentration: 1011 CFU/250 g). The study measured the mouse weight, organ index, morphology of the spleen tissue, expression levels of immunoglobulins and immune cell factors, to investigate the effects of probiotic yogurt on immune function. The results showed that the mouse weight growth of the MPYC group and HPYC group was significantly higher than that of the MC group(P<0.05), but lower than that of the NC group(P>0.05). The spleen and thymus index of the LPYC, MPYC, and HPYC groups were significantly higher than that of the MC group(P<0.05), but significantly lower than the weight gain of the NC group mice(P>0.05). HE staining showed that composite probiotic yogurt improved the morphology of the spleen tissue. ELISA showed that compared with the MC group, composite probiotic yogurt significantly increased the expression of immunoglobulin IgG and IgA in mouse serum(P<0.05). qRT-PCR results showed that composite probiotic yogurt significantly increased the expression of immune cell factors TNF-α, IL-6, and IL-12 in mouse serum (P<0.05). In conclusion, composite probiotic yogurt has a significant effect on improving the immune function of immune- suppressed mice.

Key words: compound probiotics, yogurt, Bifidobacterium, immunosuppression, immunoactivity

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