Cited by 34Pancreatic function and diabetesDiabetes and associated disordersMitochondrial Function and Pathology

Upregulation of mitochondrial peripheral benzodiazepine receptor expression by cytokine-induced damage of human pancreatic islets

Trincavelli, M. Letizia, Marselli, Lorella, Falleni, Alessandra, Gremigni, Vittorio, Ragge, Esther, Dotta, Francesco, Santangelo, Carmela, Marchetti, Piero +2 more·2002·Journal of Cellular Biochemistry

Abstract

Cytokines produced by immune system cells infiltrating pancreatic islets are candidate mediators of islet beta-cell destruction in autoimmune insulin-dependent diabetes mellitus. After 72 h exposure of human pancreatic islets to a cytotoxic cytokine combination of interleukin 1 beta (50 U/ml), tumor necrosis factor alpha (1,000 U/ml), and interferon gamma (1,000 U/ml), an increase of cell death vs. control islets was demonstrated by TUNEL and cell death detection ELISA method. Islet death was associated with apoptosis and mitochondrial swelling as evidenced by electron microscopy. This effect was correlated with a marked decrease of Bcl-2 mRNA expression (without any major change of Bax mRNA) and a marked increase of inducible nitric oxide synthase mRNA. Since peripheral benzodiazepine receptors constitute the aspecific mitochondrial permeability transition pore, and that it has been suggested to be involved in cytokine-induced cell death, we evaluated the effects of the cytotoxic cytokines on PBR density and mRNA expression. We demonstrated that cytokine treatment of human islets induced an increase of maximum density of (3)H1-(2-chlorophenyl-N-methyl-1-methylpropyl)-3- isoquinolinecarboxamide binding sites, (5,110+/-193 vs. 3,421+/-336 fmol/mg proteins, P<0.05) with no significant change in the affinity constant value (9.45+/-0.869 vs. 8.7+/-1.159 nM). Moreover, an increase of the expression of peripheral benzodiazepine receptor mRNA was observed, suggesting an increased tr…

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Crossref · 10.1002/jcb.10035

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Authors
Trincavelli, M. L., Marselli, L., Falleni, A., Gremigni, V., Ragge, E., Dotta, F., Santangelo, C., Marchetti, P., Lucacchini, A., & Martini, C.
Affiliations
  • University of Pisa (IT)
  • Sapienza University of Rome (IT)
Venue
Journal of Cellular Biochemistry
Publisher
Wiley
Published
2002-01
Volume
84
Issue
3
Pages
636-644
ISSN
  • 0730-2312 (ISSN-L)
  • 1097-4644
OpenAlex
W2018862468
Cited by
34
References
43
Citations by year
2024: 1 · 2022: 2 · 2020: 1 · 2017: 1 · 2016: 2 · 2015: 1 · 2012: 2
FWCI
2.56
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cellular Biochemistry (publishedVersion)
  • PubMed (publishedVersion)
  • CINECA IRIS Institutial research information system (University of Pisa) (submittedVersion)
  • Use Siena air (University of Siena) (submittedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Diabetes and associated disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
translocator protein (TSPO), mitochondrial permeability transition pore, pancreatic islets, beta-cell apoptosis, type 1 diabetes, IL-1β, TNF-α, interferon-gamma, Bcl-2, inducible nitric oxide synthase, mitochondrial swelling, receptor mRNA expression
MeSH terms
Adult, Cell Nucleus, Cells, Cultured, Humans, Interferon-gamma, Interleukin-1, Islets of Langerhans, Mitochondria, Receptors, GABA-A, RNA, Messenger, Tumor Necrosis Factor-alpha, Transcriptional Activation, Up-Regulation, Cytokines, Apoptosis, Nitric Oxide Synthase, Proto-Oncogene Proteins c-bcl-2, In Situ Nick-End Labeling, Nitric Oxide Synthase Type II

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