Immunohistochemical Analysis of Human Vallate Taste Buds.

Immunohistochemical Analysis of Human Vallate Taste Buds.
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人类 Vallate 味蕾的免疫组织化学分析。

DOI:
10.1093/chemse/bjv048
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发表时间:
2015
期刊:
影响因子:
3.5
通讯作者:
Finger,ThomasE
Finger,ThomasE
中科院分区:
心理学4区
文献类型:
--
作者:
Tizzano,Marco;Grigereit,Laura;Shultz,Nicole;Clary,MatthewS;Finger,ThomasE

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用免疫组织化学方法研究了人死后标本的凹状乳头形态。显微镜下,味蕾沿着乳头的内壁存在,在某些情况下也存在于外壁。典型的味觉细胞标记物plc - β2、GNAT3 (gustducin)和T1R3受体染色使人类味蕾细胞伸长,与啮齿动物的II型细胞一致。在人体组织中,用II型细胞标记物plc - β2和GNAT3染色的味蕾细胞也用绒毛蛋白抗体染色。啮齿类动物III型味觉细胞的两种典型免疫化学标记,PGP9.5和SNAP25,不能染色人类死后组织中的任何味蕾细胞,尽管这些抗体确实染色了整个标本中的许多神经纤维。在我们的样品中,另一种III型细胞标记物Car4仅与少数味觉细胞发生反应。最后,人类乳头具有与啮齿类动物相似的神经支配网络,并且具有针对SNAP25、PGP9.5、乙酰化微管蛋白和P2X3的抗体,这些抗体都是无染色的表皮周围神经末梢以及乳内味觉纤维。我们得出的结论是,除了III型细胞的某些分子特征外,人类乳突具有在啮齿类动物中观察到的结构、形态和分子特征。
The morphology of the vallate papillae from postmortem human samples was investigated with immunohistochemistry. Microscopically, taste buds were present along the inner wall of the papilla, and in some cases in the outer wall as well. The typical taste cell markers PLCβ2, GNAT3 (gustducin) and the T1R3 receptor stain elongated cells in human taste buds consistent with the Type II cells in rodents. In the human tissue, taste bud cells that stain with Type II cell markers, PLCβ2 and GNAT3, also stain with villin antibody. Two typical immunochemical markers for Type III taste cells in rodents, PGP9.5 and SNAP25, fail to stain any taste bud cells in the human postmortem tissue, although these antibodies do stain numerous nerve fibers throughout the specimen. Car4, another Type III cell marker, reacted with only a few taste cells in our samples. Finally, human vallate papillae have a general network of innervation similar to rodents and antibodies directed against SNAP25, PGP9.5, acetylated tubulin and P2X3 all stain free perigemmal nerve endings as well as intragemmal taste fibers. We conclude that with the exception of certain molecular features of Type III cells, human vallate papillae share the structural, morphological, and molecular features observed in rodents.
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