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Data de publicació

2018-01-18

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cc-by (c) Espinosa Carrasco, Gabriel et al., 2018
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/139399

CD4+ T helper cells play a key role in maintaining diabetogenic CD8+ T cell function in the pancreas

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Recurs relacionat

https://doi.org/10.3389/fimmu.2017.02001

Resum

Autoreactive CD8+ and CD4+ T cells have been assigned independent key roles in the destruction of insulin-producing beta cells resulting in type 1 diabetes. Although CD4 help for the generation of efficient CD8+ T cell responses in lymphoid tissue has been extensively described, whether these two cell populations cooperate in islet destruction in situ remains unclear. By using intravital 2-photon microscopy in a mouse model of diabetes, we visualized both effector T cell populations in the pancreas during disease onset. CD4+ T helper cells displayed a much higher arrest in the exocrine tissue than islet-specific CD8+ T cells. This increased arrest was major histocompatibility complex (MHC) class II-dependent and locally correlated with antigen-presenting cell recruitment. CD8+ T cells deprived of continued CD4 help specifically in the pancreas, through blocking MHC class II recognition, failed to maintain optimal effector functions, which contributed to hamper diabetes progression. Thus, we provide novel insight in the cellular mechanisms regulating effector T cell functionality in peripheral tissues with important implications for immunotherapies.

Matèries

Pàncrees, Diabetis

Matèries (anglès)

Pancreas, Diabetes

Citació

Col·leccions

Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia)

Citació

ESPINOSA CARRASCO, Gabriel, et al. CD4+ T helper cells play a key role in maintaining diabetogenic CD8+ T cell function in the pancreas. Frontiers in Immunology. 2018. Vol. 8, num. 2001. ISSN 1664-3224. [consulted: 3 of August of 2026]. Available at: https://hdl.handle.net/2445/139399

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