Antiallergic effects of anti-interleukin-33 are associated with suppression of immunoglobulin light chain and inducible nitric oxide synthase
Objective:
We aimed to find novel genes that are significantly induced in allergic mice and that are significantly downregulated with anti‐interleukin (IL) 33 treatment.
Methods:
Thirty-six mice were allocated into each of group A (intraperitoneal [i.p.]) sensitized and intranasally challenged to saline solution), group B (sensitized and challenged to ovalbumin), group C (sensitized and challenged with ovalbumin, and null treatment with i.p. saline solution), and group D (sensitized and challenged with ovalbumin, and treatment with anti‐IL-33 i.p. injection). We counted the number of nose-scratching in 10 minutes, serum ovalbumin‐specific immunoglobulin E (IgE), and titers of cytokines (IL-1, IL-4, IL-5, IL-10, IL-13) in bronchoalveolar lavage fluid. By using one whole lung from each mouse, we performed microarray analysis and real-time polymerase chain reaction.
Results:
group D showed a significantly reduced nose-scratching events and lower serum ovalbumin-specific IgE compared with groups B and C. All the cytokines in the bronchoalveolar lavage fluid were significantly decreased after anti‐IL-33 treatment. Microarray analysis revealed that group B (immunoglobulin free light chain [IgFLC], 89.1 times; nitric oxide synthase [NOS] 2, 11.5 times) and group C (IgFLC, 141.6 times; NOS2, 11.7 times) had significantly increased expression of IgFLC and NOS2 genes compared with group A. After anti‐IL-33 treatment, group D showed significantly decreased expression of both IgFLC (49.3 times) and NOS2 (6.5 times). In real-time polymerase chain reaction, groups B and C had significantly increased expression of these genes (IgFLC, 10.4 times and 29 times, respectively; NOS2, 3.8 times and 4.5 times, respectively). After treatment, group D showed significantly decreased expression of IgFLC (5.0 times) and NOS2 (2.5 times).
Conclusion:
The antiallergic effect of anti‐IL-33 can be explained by suppression of IgFLC and NOS2 in a murine model of allergic rhinitis.
We aimed to find novel genes that are significantly induced in allergic mice and that are significantly downregulated with anti‐interleukin (IL) 33 treatment.
Methods:
Thirty-six mice were allocated into each of group A (intraperitoneal [i.p.]) sensitized and intranasally challenged to saline solution), group B (sensitized and challenged to ovalbumin), group C (sensitized and challenged with ovalbumin, and null treatment with i.p. saline solution), and group D (sensitized and challenged with ovalbumin, and treatment with anti‐IL-33 i.p. injection). We counted the number of nose-scratching in 10 minutes, serum ovalbumin‐specific immunoglobulin E (IgE), and titers of cytokines (IL-1, IL-4, IL-5, IL-10, IL-13) in bronchoalveolar lavage fluid. By using one whole lung from each mouse, we performed microarray analysis and real-time polymerase chain reaction.
Results:
group D showed a significantly reduced nose-scratching events and lower serum ovalbumin-specific IgE compared with groups B and C. All the cytokines in the bronchoalveolar lavage fluid were significantly decreased after anti‐IL-33 treatment. Microarray analysis revealed that group B (immunoglobulin free light chain [IgFLC], 89.1 times; nitric oxide synthase [NOS] 2, 11.5 times) and group C (IgFLC, 141.6 times; NOS2, 11.7 times) had significantly increased expression of IgFLC and NOS2 genes compared with group A. After anti‐IL-33 treatment, group D showed significantly decreased expression of both IgFLC (49.3 times) and NOS2 (6.5 times). In real-time polymerase chain reaction, groups B and C had significantly increased expression of these genes (IgFLC, 10.4 times and 29 times, respectively; NOS2, 3.8 times and 4.5 times, respectively). After treatment, group D showed significantly decreased expression of IgFLC (5.0 times) and NOS2 (2.5 times).
Conclusion:
The antiallergic effect of anti‐IL-33 can be explained by suppression of IgFLC and NOS2 in a murine model of allergic rhinitis.
Keywords: allergic rhinitis; anti‐IL-33; bronchoalveolar lavage; cytokines; genes; immunoglobulin; microarray; nitric oxide synthase; ovalbumin; real-time polymerase chain reaction
Document Type: Research Article
Affiliations: Department of Pharmacology, Hypoxia-Related Disease Research Center, Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon, Republic of Korea
Publication date: 01 January 2016
This article was made available online on 15 October 2015 as a Fast Track article with title: "Antiallergic effects of anti-interleukin-33 is associated with suppression of immunoglobulin light chain and inducible nitric oxide synthase".
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