益生菌通过CCL2促进淋巴细胞的体移动
Peng Liu1, Jinjiao Zuo1, Hui Lu1
1Jiangsu Agri-Animal Husbandry Vocational College, Jiangsu, 225300, PR China.
Poultry science
|May 30, 2025
概括
母猪胆乳中的益生菌显著增强T淋巴细胞通过刺激CCL2分泌通过乳腺上皮的迁移. 这种机制对于改善母猪乳性免疫力至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 生殖生物学 生殖生物学
背景情况:
- 母乳含有大量来自乳腺组织的淋巴细胞.
- 淋巴细胞在乳腺上皮上迁移的精确机制尚未完全理解.
- 怀孕期间的荷尔蒙变化会影响淋巴细胞向乳腺转移.
研究的目的:
- 为了研究结肠杆激素对母猪T淋巴细胞穿过乳腺上皮的迁移对结肠杆激素的影响.
- 阐明益乳素和雌激素在调节淋巴细胞横细胞迁移中的作用.
- 为了确定参与激素介导的淋巴细胞迁移的信号通路.
主要方法:
- 乳腺上皮细胞 (MEC) 和T淋巴细胞的共同培养系统.
- 电子显微镜和光激活细胞分类 (FACS) 用于量化淋巴细胞.
- 激素度测定 (益生素,雌激素) 和相关性分析.
- 过井迁移测定与激素治疗.
- 实时定量PCR (RT-qPCR) 和ELISA用于测量CCL2分泌.
- CCL2中和试验以阻止迁移.
主要成果:
- 在母猪胆汁中,T淋巴细胞约占细胞的9%.
- 大奶粉中的益生素和雌激素水平与T淋巴细胞数量呈正相关性.
- 益生素,但不是雌激素,显著促进T淋巴细胞在MECs的迁移.
- 益生菌通过MECs升级调节CCL2分泌.
- 用中和抗体阻止CCL2显著抑制T淋巴细胞迁移.
结论:
- 益生菌是T淋巴细胞迁移到母猪胆汁的关键调节剂.
- 益生菌通过诱导来自MECs的CCL2分泌来增强淋巴细胞的横细胞迁移.
- 这种益生菌-CCL2通路在建立母猪乳性免疫力方面发挥着至关重要的作用.
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