What question did this study set out to answer?

To examine the inhibitory effects and underlying signaling pathways of interleukin-19 (IL-19) on interleukin-4 (IL-4)-induced eotaxin production in human nasal fibroblasts.

January 1, 2011Allergology InternationalOpen Access

Interleukin-19 Downregulates Interleukin-4-Induced Eotaxin Production in Human Nasal Fibroblasts

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Authors

MHMasaaki HigashinoShikoku Cancer Center TTTetsuji TakabayashiUniversity of Fukui NTNoboru TakahashiUniversity of Fukui

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Implication

In vitro experiment demonstrates IL-19 downregulates IL-4-induced eotaxin via SOCS-1 in nasal fibroblasts, indicating its immunosuppressive role in allergic rhinitis.

Key Points

To examine the inhibitory effects and underlying signaling pathways of interleukin-19 (IL-19) on interleukin-4 (IL-4)-induced eotaxin production in human nasal fibroblasts.
Treated human nasal fibroblasts with IL-19 and evaluated IL-4-induced eotaxin and IFN-γ-induced RANTES production.
Assayed receptor-mediated signaling pathways, specifically STAT6 phosphorylation and the expression of SOCS-1, SOCS-3, and SOCS-5.
Used RNA interference (RNAi) to knock down SOCS-1 to determine its mechanistic role in IL-19-mediated downregulation.
IL-19 pretreatment selectively downregulated IL-4-induced eotaxin production and suppressed STAT6 phosphorylation without altering IFN-γ-induced RANTES.
IL-19 selectively induced expression of SOCS-1, but did not induce SOCS-3 or SOCS-5.
Knockdown of SOCS-1 by RNAi reversed the IL-19-mediated suppression of IL-4-induced eotaxin production.

Cite This Study

Higashino et al. (2011) studied this question.

synapsesocial.com/papers/6a79bb4f1ba4614d7ff3a328 https://doi.org/10.2332/allergolint.10-oa-0262

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Implication

In vitro experiment demonstrates IL-19 downregulates IL-4-induced eotaxin via SOCS-1 in nasal fibroblasts, indicating its immunosuppressive role in allergic rhinitis.

Interleukin-19 Downregulates Interleukin-4-Induced Eotaxin Production in Human Nasal Fibroblasts

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Implication

Key Points

Cite This Study

Interleukin-19 Downregulates Interleukin-4-Induced Eotaxin Production in Human Nasal Fibroblasts

Discussion

Member takes

Implication

Key Points

Cite This Study

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