IL-32γ overexpression accelerates streptozotocin (STZ)-induced type 1 diabetes

  • Hyunjhung Jhun
  • , Jida Choi
  • , Jaewoo Hong
  • , Siyoung Lee
  • , Areum Kwak
  • , Eunsom Kim
  • , Seunghyun Jo
  • , Soyoon Ryoo
  • , Yoojung Lim
  • , Do Young Yoon
  • , Jin Tae Hong
  • , Tae Sung Kim
  • , Youngmin Lee
  • , Keeho Song
  • , Soohyun Kim*
  • *Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Interleukin-32 (IL-32) is a cytokine produced by T lymphocytes, natural killer (NK) cells, monocytes and epithelial cells. There are five splicing variants (α, β, γ, δ, and ε) and IL-32γ is the most active isoform. We generated human IL-32γ transgenic (IL-32γ TG) mice, displaying a high level of IL-32γ expression in the pancreas. We investigated the effect of IL-32γ on streptozotocin (STZ)-induced type 1 diabetes model using IL-32γ TG mice. After a suboptimal diabetogenic dose of STZ administration, IL-32γ TG mice showed significantly increased blood glucose level comparing with that of wild type (WT) mice at day 5. Inflammatory cytokines levels such as, IL-6, TNFα, IFNγ and IL-1β, in pancreas and liver lysates were accessed by a specific cytokine ELISA. The proinflammatory cytokines were significantly enhanced in the pancreas of IL-32γ TG mice comparing to that of WT mice whereas those cytokines levels in liver of IL-32γ TG and WT mice were not changed by STZ. These data indicate that the overexpression of IL-32γ contributes to initial islet β-cells injury and inflammation in pancreas and aggravates STZ-induced type 1 diabetes.

    Original languageEnglish
    Pages (from-to)1-5
    Number of pages5
    JournalCytokine
    Volume69
    Issue number1
    DOIs
    Publication statusPublished - 2014 Sept

    Bibliographical note

    Funding Information:
    This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST: 2012R1A2A1A01001791) and S Kim received support from the Konkuk University research support program.

    UN SDGs

    This output contributes to the following UN Sustainable Development Goals (SDGs)

    1. SDG 3 - Good Health and Well-being
      SDG 3 Good Health and Well-being

    Keywords

    • Glucose tolerance test
    • IL-32γ transgenic mice
    • Inflammatory cytokine
    • Pancreas
    • Streptozotocin (STZ)-induced type I diabetes

    ASJC Scopus subject areas

    • Molecular Biology
    • Hematology
    • Biochemistry
    • Immunology and Allergy
    • Immunology

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