Immunological Identification of Vesicular Nucleotide Transporter in Intestinal L Cells
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- Harada Yuika
- Department of Membrane Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
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- Hiasa Miki
- Department of Membrane Biochemistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Bibliographic Information
- Other Title
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- Communication to the Editor : Immunological Identification of Vesicular Nucleotide Transporter in Intestinal L Cells
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Abstract
It is well established that vesicular nucleotide transporter (VNUT) is responsible for vesicular storage of nucleotides such as ATP, and that VNUT-expressing cells can secrete nucleotides upon exocytosis, playing an important role in purinergic chemical transmission. In the present study, we show that VNUT is expressed in intestinal L cells. Immunohistochemical evidence indicated that VNUT is present in glucagon-like peptide 1 (GLP-1) containing cells in rat intestine. VNUT immunoreactivity is not co-localized with GLP-1, a marker for secretory granules, and synaptophysin, a marker for synaptic-like microvesicles (SLMVs). Essentially the same results were obtained for GLUTag clonal L cells. Sucrose density gradient analysis confirmed that VNUT is present the light fraction, unlike secretory granules. These results demonstrate that intestinal L cells express VNUT in either the unidentified organelles at light density other than secretory granules and SLMVs or a subpopulation of SLMVs, and suggest that L cells are purinergic in nature and secrete nucleotides independent of GLP-1 secretion.
Journal
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- Biological and Pharmaceutical Bulletin
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Biological and Pharmaceutical Bulletin 37 (7), 1090-1095, 2014
The Pharmaceutical Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204634393984
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- NII Article ID
- 130004057432
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- NII Book ID
- AA10885497
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- COI
- 1:STN:280:DC%2BC2cfovVCqsA%3D%3D
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- ISSN
- 13475215
- 09186158
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- NDL BIB ID
- 025543019
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- PubMed
- 24989000
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed