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猪扁桃体中树突状细胞的分布研究

DOI: 10.7685/j.issn.1000-2030.2014.06.018, PP. 125-129

Keywords: ,咽鼓管扁桃体,软腭扁桃体,树突状细胞

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Abstract:

本试验选用MHCⅡ、CD11b和CD16三种猪树突状细胞(DC)的抗体,对10头2月龄的杜长大三元杂交猪咽鼓管扁桃体和软腭扁桃体中的DC进行标记,应用荧光显微镜和激光共聚焦显微镜技术对分布于猪扁桃体内的DC进行观察和分析。结果发现猪咽鼓管扁桃体和软腭扁桃体黏膜下固有层和淋巴滤泡内的DC可共表达CD11b与CD16或CD11b与MHCⅡ分子。咽鼓管扁桃体和软腭扁桃体黏膜下固有层中双阳性DC数量大约是淋巴滤泡双阳性DC数量的3倍。正常状态下双阳性DC在扁桃体上皮细胞间分布较少,咽鼓管扁桃体上皮细胞间几乎没有分布。单阳性CD11b+DC多分布于咽鼓管上皮细胞下方,仅有少量的CD11b+DC可向上皮细胞方向伸出胞质突起。软腭扁桃体和咽鼓管扁桃体固有层内分布有一定数量的DC,有利于摄取抗原和诱导免疫应答,为猪鼻腔免疫和口服免疫提供理论依据。

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