Cell-type specific occurrence of apoptosis in taste buds of the rat circumvallate papilla

• Ueda Katsura

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Ichimori Yasuo

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Maruyama Hitomi

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Murakami Yayoi

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Fujii Masae

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Honma Shiho

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

• Wakisaka Satoshi

  Department of Oral Anatomy and Developmental Biology, Osaka University Graduate School of Dentistry

抄録

The present study employed immunohistochemistry for single-stranded DNA (ssDNA) to detect apoptotic cells in taste buds of the rat circumvallate papilla. Double-labeling of ssDNA and markers for each cell type - phospholipase C β2 (PLCβ2) and α-gustducin for type II cells, neural cell adhesion molecule (NCAM) for type III cells, and Jacalin for type IV cells - was also performed to reveal which types of cells die by apoptosis. We detected approximately 16.8% and 14.0% of ssDNA-immunoreactive nuclei among PLCβ2-immunoreactive and α-gustducinimmunoreactive cells, respectively, but rarely found ssDNA-immunoreactive cells among NCAM-immunoreactive or Jacalin-labeled cells, indicating that type II cells die by apoptosis. We also applied double labeling of ssDNA and human blood group antigen H (AbH) - which mostly labels type I cells as well as other cell types - and found that approximately 78% of ssDNA-immunoreactive cells were labeled with AbH, indicating that apoptosis also occurs in type I cells. The present results revealed that apoptosis occurs in both type I cells (dark cells) and type II cells (light cells), suggesting that there are two major cell lineages (dark cell and light cell lineages) for the differentiation of taste bud cells. In summury, type IV cells differentiate into dark and light cells and type III cells differentiate to type II cells within the light cell line.

収録刊行物

• Ａｒｃｈｉｖｅｓ　ｏｆ　Ｈｉｓｔｏｌｏｇｙ　ａｎｄ　Ｃｙｔｏｌｏｇｙ

  Ａｒｃｈｉｖｅｓ　ｏｆ　Ｈｉｓｔｏｌｏｇｙ　ａｎｄ　Ｃｙｔｏｌｏｇｙ 71 (1), 59-67, 2008

  国際組織細胞学会

キーワード

• Histology

詳細情報

• CRID: 1390001206412914944
• NII論文ID: 130004462708
• NII論文ID: 10021998703
• NII書誌ID: AA1068990X
• DOI: 10.1679/aohc.71.59
• ISSN: 13491717
• ISSN: 09149465
• Web Site: http://www.jstage.jst.go.jp/article/aohc/71/1/71_1_59/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2009027679
• 本文言語コード: en
• データソース種別:
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  • CiNii Articles
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