Cited by 194Pancreatic function and diabetesCellular transport and secretionIon Transport and Channel Regulation

Priming of insulin granules for exocytosis by granular Cl(-) uptake and acidification

Barg, Sebastian, Huang, Ping, Eliasson, Lena, Nelson, Deborah J., Obermüller, Stefanie, Rorsman, Patrik, Thévenod, Frank, Renström, Erik·2001·Journal of Cell Science

Abstract

ATP-dependent priming of the secretory granules precedes Ca(2+)-regulated neuroendocrine secretion, but the exact nature of this reaction is not fully established in all secretory cell types. We have further investigated this reaction in the insulin-secreting pancreatic B-cell and demonstrate that granular acidification driven by a V-type H(+)-ATPase in the granular membrane is a decisive step in priming. This requires simultaneous Cl(-) uptake through granular ClC-3 Cl(-) channels. Accordingly, granule acidification and priming are inhibited by agents that prevent transgranular Cl(-) fluxes, such as 4,4'-diisothiocyanostilbene-2,2'-disulfonic acid (DIDS) and an antibody against the ClC-3 channels, but accelerated by increases in the intracellular ATP:ADP ratio or addition of hypoglycemic sulfonylureas. We suggest that this might represent an important mechanism for metabolic regulation of Ca(2+)-dependent exocytosis that is also likely to be operational in other secretory cell types.

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Crossref · 10.1242/jcs.114.11.2145

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34 of 34 references verified0 citation errors · 0 not checkable

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  • An acidic intragranular pH is important both for correct processing and maturation of insulin, and for insulin secretion.

    “An acidic intragranular pH is important both for correct processing and maturation of insulin, and for insulin secretion (47, 649).”
  • In the rat insulinoma cell line INS-1E and in primary mouse and rat pancreatic beta cells, use of FCCP/CCCP inhibits glucose-stimulated insulin release (GSIS).

    “In the rat insulinoma cell line INS-1E and in primary mouse and rat pancreatic beta cells, use of FCCP/CCCP inhibits glucose-stimulated insulin release (GSIS) [168,169,170].”
  • In rat insulinoma cells and primary mouse and rat pancreatic beta cells, FCCP/CCCP inhibits glucose-stimulated and Ca2+-dependent insulin release.

    “In rat insulinoma cells and primary mouse and rat pancreatic beta cells, FCCP/CCCP inhibits glucose-stimulated (and Ca2+-dependent) insulin release (GSIS) [168,169,170].”

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Authors
Barg, S., Huang, P., Eliasson, L., Nelson, D. J., Obermüller, S., Rorsman, P., Thévenod, F., & Renström, E.
Affiliations
  • Lund University (SE)
  • University of Chicago (US)
  • Department of Physiological Sciences, Lund University, Sölvegatan 19, SE-223 62 Lund, Sweden
  • Physiologisches Institut, Universität des Saarlandes, D-66421 Homburg/Saar, Germany
Venue
Journal of Cell Science
Published
2001-06-01
Volume
114
Issue
11
Pages
2145-2154
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2126153001
Cited by
194
References
34
Citations by year
2025: 4 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 6 · 2020: 5 · 2019: 5 · 2018: 6 · 2017: 7 · 2016: 10 · 2015: 4 · 2014: 6 · 2013: 4 · 2012: 10
FWCI
12.20
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
  • Lund University Publications (Lund University) (submittedVersion)
Funders
National Institute of General Medical Sciences (R01 GM 3682)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
Keywords
insulin secretion, exocytosis, V-type H+-ATPase, ClC-3 chloride channel, chloride uptake, pancreatic beta cells, ATP/ADP ratio, sulfonylureas, DIDS, calcium-dependent secretion
MeSH terms
Insulin Secretion, Adenosine Diphosphate, Adenosine Triphosphate, Animals, Cells, Cultured, Chlorides, Exocytosis, Humans, Hydrogen-Ion Concentration, Insulin, Islets of Langerhans, Models, Biological, Sulfonylurea Compounds, Ion Transport, 4,4'-Diisothiocyanostilbene-2,2'-Disulfonic Acid, Chloride Channels, Secretory Vesicles, Vacuolar Proton-Translocating ATPases, Mice

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