L.casei EPS体外促进Balb/c小鼠小肠上皮细胞增殖及其分泌IL-8、IL-10和TGF-β

被引:3
作者
霍思序 [1 ]
唐彦君 [1 ,2 ]
刘宁 [1 ,3 ]
机构
[1] 东北农业大学食品学院乳品科学教育部重点实验室
[2] 黑龙江八一农垦大学食品学院
[3] 国家乳业工程技术研究中心
关键词
干酪乳杆菌胞外多糖; 小肠上皮细胞; 增殖; 细胞因子;
D O I
10.13431/j.cnki.immunol.j.20130182
中图分类号
TS201.4 [食品营养学]; R392 [医学免疫学];
学科分类号
083201 ; 100102 ;
摘要
目的以干酪乳杆菌(Lactobacillus casei,L.casei)胞外多糖(exopolysaccharides,EPS)为研究对象,研究其在体外对Balb/c小鼠小肠上皮细胞(small intestinal epithelial cell,IECs)增殖及其分泌IL-8、IL-10和TGF-β的影响。方法利用嗜热菌蛋白酶消化联合差速贴壁以及免疫细胞化学鉴定的方法对Balb/c小鼠IECs进行分离和鉴定,获得实验用的IECs。用不同质量浓度的L.casei EPS与IECs共培养,分别观察0.5、1、2 h和4 h后IECs的增殖情况。当用不同质量浓度的L.casei EPS处理IECs 2 h后,采用双抗体夹心ELISA法检测细胞培养上清液中细胞因子IL-8、IL-10和TGF-β的质量浓度。结果嗜热菌蛋白酶消化联合差速贴壁的方法能够获得纯度高与活性好的IECs;L.casei EPS能够促进IECs的增殖,显著上调上清液中IL-8、IL-10和TGF-β的分泌水平(P<0.05),EPS质量浓度在0~150μg/ml范围内呈剂量依赖关系,并且在150μg/ml的质量浓度时达到最大值。结论 L.casei EPS能够促进IECs的增殖及IL-8、IL-10和TGF-β的分泌水平。
引用
收藏
页码:835 / 839
页数:5
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