CD40 expression on human pancreatic duct cells: role in nuclear factor-kappa B activation and production of pro-inflammatory cytokines

O Vosters, C Beuneu, N Nagy, B Movahedi, E Aksoy, B. Salmon, D Pipeleers, M Goldman, V. Verhasselt

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Aims/hypothesis. Human pancreatic duct cells are closely associated with islet beta cells, and contaminate islet suspensions transplanted in Type 1 diabetes mellitus patients. Activated duct cells produce cytotoxic mediators and possibly contribute to the pathogenesis of Type 1 diabetes mellitus or islet graft rejection. As CD40 transduces activation signals involved in inflammatory and immune disorders, we investigated CD40 expression on duct cells and their response to CD40 engagement.

Methods. CD40 expression on human pancreatic duct cells was analysed by flow cytometry and immunohistochemical analyses. To assess the function of CD40 expression on duct cells, activation of the transcription factor nuclear factor-kappa B was determined using electrophoretic mobility shift assay and ELISA. Cytokine mRNA levels were quantified by real-time RT-PCR, and protein levels by Luminex technology.

Results. Isolated human pancreatic duct cells and Capan-2 cell lines were found to express constitutively CD40. The expression of CD40 on duct cells was confirmed in vivo on human normal and pathological pancreatic specimens. CD40 ligation on Capan-2 cells induced rapid nuclear factor-kappa B activation, and supershift assays demonstrated that p50/p65 heterodimers and p50/p50 homodimers were present in the activated complexes in the nucleus. This activation was accompanied by tumour necrosis factor-alpha and interleukin-1beta mRNA accumulation. Tumour necrosis factor-alpha protein secretion was confirmed in CD40-activated Capan-2 cells and in isolated human pancreatic duct cells.

Conclusions/interpretation. Interaction between activated T lymphocytes expressing CD40 ligand and duct cells expressing CD40 may contribute to the immune responses involved in Type 1 diabetes mellitus and islet graft rejection. Interfering with CD40-mediated duct cell activation could alleviate beta cell damage of immune origin.

Original languageEnglish
Pages (from-to)660-668
Number of pages9
JournalDiabetologia
Volume47
Issue number4
DOIs
Publication statusPublished - Apr 2004

Cite this

Vosters, O ; Beuneu, C ; Nagy, N ; Movahedi, B ; Aksoy, E ; Salmon, B. ; Pipeleers, D ; Goldman, M ; Verhasselt, V. / CD40 expression on human pancreatic duct cells : role in nuclear factor-kappa B activation and production of pro-inflammatory cytokines. In: Diabetologia. 2004 ; Vol. 47, No. 4. pp. 660-668.
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abstract = "Aims/hypothesis. Human pancreatic duct cells are closely associated with islet beta cells, and contaminate islet suspensions transplanted in Type 1 diabetes mellitus patients. Activated duct cells produce cytotoxic mediators and possibly contribute to the pathogenesis of Type 1 diabetes mellitus or islet graft rejection. As CD40 transduces activation signals involved in inflammatory and immune disorders, we investigated CD40 expression on duct cells and their response to CD40 engagement.Methods. CD40 expression on human pancreatic duct cells was analysed by flow cytometry and immunohistochemical analyses. To assess the function of CD40 expression on duct cells, activation of the transcription factor nuclear factor-kappa B was determined using electrophoretic mobility shift assay and ELISA. Cytokine mRNA levels were quantified by real-time RT-PCR, and protein levels by Luminex technology.Results. Isolated human pancreatic duct cells and Capan-2 cell lines were found to express constitutively CD40. The expression of CD40 on duct cells was confirmed in vivo on human normal and pathological pancreatic specimens. CD40 ligation on Capan-2 cells induced rapid nuclear factor-kappa B activation, and supershift assays demonstrated that p50/p65 heterodimers and p50/p50 homodimers were present in the activated complexes in the nucleus. This activation was accompanied by tumour necrosis factor-alpha and interleukin-1beta mRNA accumulation. Tumour necrosis factor-alpha protein secretion was confirmed in CD40-activated Capan-2 cells and in isolated human pancreatic duct cells.Conclusions/interpretation. Interaction between activated T lymphocytes expressing CD40 ligand and duct cells expressing CD40 may contribute to the immune responses involved in Type 1 diabetes mellitus and islet graft rejection. Interfering with CD40-mediated duct cell activation could alleviate beta cell damage of immune origin.",
keywords = "Capan-2, CD40, IL-1 beta, islet transplantation, NF-kappa B, pancreatic duct cells, TNF-alpha, Type 1 diabetes mellitus, AIRWAY EPITHELIAL-CELLS, NONOBESE DIABETIC MICE, NECROSIS-FACTOR-ALPHA, BETA-CELLS, TNF-ALPHA, DENDRITIC CELLS, CROSS-LINKING, IMMUNE-SYSTEM, HUMAN ISLETS, NOD MICE",
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CD40 expression on human pancreatic duct cells : role in nuclear factor-kappa B activation and production of pro-inflammatory cytokines. / Vosters, O; Beuneu, C; Nagy, N; Movahedi, B; Aksoy, E; Salmon, B.; Pipeleers, D; Goldman, M; Verhasselt, V.

In: Diabetologia, Vol. 47, No. 4, 04.2004, p. 660-668.

Research output: Contribution to journalArticle

TY - JOUR

T1 - CD40 expression on human pancreatic duct cells

T2 - role in nuclear factor-kappa B activation and production of pro-inflammatory cytokines

AU - Vosters, O

AU - Beuneu, C

AU - Nagy, N

AU - Movahedi, B

AU - Aksoy, E

AU - Salmon, B.

AU - Pipeleers, D

AU - Goldman, M

AU - Verhasselt, V.

PY - 2004/4

Y1 - 2004/4

N2 - Aims/hypothesis. Human pancreatic duct cells are closely associated with islet beta cells, and contaminate islet suspensions transplanted in Type 1 diabetes mellitus patients. Activated duct cells produce cytotoxic mediators and possibly contribute to the pathogenesis of Type 1 diabetes mellitus or islet graft rejection. As CD40 transduces activation signals involved in inflammatory and immune disorders, we investigated CD40 expression on duct cells and their response to CD40 engagement.Methods. CD40 expression on human pancreatic duct cells was analysed by flow cytometry and immunohistochemical analyses. To assess the function of CD40 expression on duct cells, activation of the transcription factor nuclear factor-kappa B was determined using electrophoretic mobility shift assay and ELISA. Cytokine mRNA levels were quantified by real-time RT-PCR, and protein levels by Luminex technology.Results. Isolated human pancreatic duct cells and Capan-2 cell lines were found to express constitutively CD40. The expression of CD40 on duct cells was confirmed in vivo on human normal and pathological pancreatic specimens. CD40 ligation on Capan-2 cells induced rapid nuclear factor-kappa B activation, and supershift assays demonstrated that p50/p65 heterodimers and p50/p50 homodimers were present in the activated complexes in the nucleus. This activation was accompanied by tumour necrosis factor-alpha and interleukin-1beta mRNA accumulation. Tumour necrosis factor-alpha protein secretion was confirmed in CD40-activated Capan-2 cells and in isolated human pancreatic duct cells.Conclusions/interpretation. Interaction between activated T lymphocytes expressing CD40 ligand and duct cells expressing CD40 may contribute to the immune responses involved in Type 1 diabetes mellitus and islet graft rejection. Interfering with CD40-mediated duct cell activation could alleviate beta cell damage of immune origin.

AB - Aims/hypothesis. Human pancreatic duct cells are closely associated with islet beta cells, and contaminate islet suspensions transplanted in Type 1 diabetes mellitus patients. Activated duct cells produce cytotoxic mediators and possibly contribute to the pathogenesis of Type 1 diabetes mellitus or islet graft rejection. As CD40 transduces activation signals involved in inflammatory and immune disorders, we investigated CD40 expression on duct cells and their response to CD40 engagement.Methods. CD40 expression on human pancreatic duct cells was analysed by flow cytometry and immunohistochemical analyses. To assess the function of CD40 expression on duct cells, activation of the transcription factor nuclear factor-kappa B was determined using electrophoretic mobility shift assay and ELISA. Cytokine mRNA levels were quantified by real-time RT-PCR, and protein levels by Luminex technology.Results. Isolated human pancreatic duct cells and Capan-2 cell lines were found to express constitutively CD40. The expression of CD40 on duct cells was confirmed in vivo on human normal and pathological pancreatic specimens. CD40 ligation on Capan-2 cells induced rapid nuclear factor-kappa B activation, and supershift assays demonstrated that p50/p65 heterodimers and p50/p50 homodimers were present in the activated complexes in the nucleus. This activation was accompanied by tumour necrosis factor-alpha and interleukin-1beta mRNA accumulation. Tumour necrosis factor-alpha protein secretion was confirmed in CD40-activated Capan-2 cells and in isolated human pancreatic duct cells.Conclusions/interpretation. Interaction between activated T lymphocytes expressing CD40 ligand and duct cells expressing CD40 may contribute to the immune responses involved in Type 1 diabetes mellitus and islet graft rejection. Interfering with CD40-mediated duct cell activation could alleviate beta cell damage of immune origin.

KW - Capan-2

KW - CD40

KW - IL-1 beta

KW - islet transplantation

KW - NF-kappa B

KW - pancreatic duct cells

KW - TNF-alpha

KW - Type 1 diabetes mellitus

KW - AIRWAY EPITHELIAL-CELLS

KW - NONOBESE DIABETIC MICE

KW - NECROSIS-FACTOR-ALPHA

KW - BETA-CELLS

KW - TNF-ALPHA

KW - DENDRITIC CELLS

KW - CROSS-LINKING

KW - IMMUNE-SYSTEM

KW - HUMAN ISLETS

KW - NOD MICE

U2 - 10.1007/s00125-004-1363-1

DO - 10.1007/s00125-004-1363-1

M3 - Article

VL - 47

SP - 660

EP - 668

JO - Diabetolgia

JF - Diabetolgia

SN - 0012-186X

IS - 4

ER -