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Expression of Suppressor of Cytokine Signaling 1 (SOCS1) Impairs Viral Clearance and Exacerbates Lung Injury during Influenza Infection


Cytokines are critical in regulating the balance between protective immunity and detrimental inflammation during influenza infection. Suppressor of cytokine signaling (SOCS) proteins are inducible feedback inhibitors of cytokine signaling. Using gene-deficient and infectious animal models, we determined how SOCS1 regulates immune defense against influenza infection. We show that the intracellular protein SOCS1 not only inhibits adaptive antiviral immune responses but also exacerbates inflammatory lung damage. These detrimental effects of SOCS1 are conveyed through discrete cell populations. Specifically, while SOCS1 expression in adaptive immune cells is sufficient to inhibit antiviral immunity, SOCS1 in innate/stromal cells is responsible for aggravated lung injury. To our knowledge, there is no report showing the regulatory role of SOCS1 during the course of influenza infection, and importantly, no evidence directly linking SOCS1 with excessive inflammation in other infectious disease models. The distinct and non-competing detrimental roles of SOCS1, as revealed in this study, make it an appealing target in the design of effective immunotherapies for combating influenza infection.


Vyšlo v časopise: Expression of Suppressor of Cytokine Signaling 1 (SOCS1) Impairs Viral Clearance and Exacerbates Lung Injury during Influenza Infection. PLoS Pathog 10(12): e32767. doi:10.1371/journal.ppat.1004560
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.ppat.1004560

Souhrn

Cytokines are critical in regulating the balance between protective immunity and detrimental inflammation during influenza infection. Suppressor of cytokine signaling (SOCS) proteins are inducible feedback inhibitors of cytokine signaling. Using gene-deficient and infectious animal models, we determined how SOCS1 regulates immune defense against influenza infection. We show that the intracellular protein SOCS1 not only inhibits adaptive antiviral immune responses but also exacerbates inflammatory lung damage. These detrimental effects of SOCS1 are conveyed through discrete cell populations. Specifically, while SOCS1 expression in adaptive immune cells is sufficient to inhibit antiviral immunity, SOCS1 in innate/stromal cells is responsible for aggravated lung injury. To our knowledge, there is no report showing the regulatory role of SOCS1 during the course of influenza infection, and importantly, no evidence directly linking SOCS1 with excessive inflammation in other infectious disease models. The distinct and non-competing detrimental roles of SOCS1, as revealed in this study, make it an appealing target in the design of effective immunotherapies for combating influenza infection.


Zdroje

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Štítky
Hygiena a epidemiológia Infekčné lekárstvo Laboratórium

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