{"id":236054,"date":"2026-04-28T02:18:05","date_gmt":"2026-04-28T07:18:05","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2026\/04\/il-9-and-blimp-1-protect-the-transcriptional-identity-of-group-2-innate-lymphocytes-in-allergic-asthma"},"modified":"2026-04-28T02:18:05","modified_gmt":"2026-04-28T07:18:05","slug":"il-9-and-blimp-1-protect-the-transcriptional-identity-of-group-2-innate-lymphocytes-in-allergic-asthma","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2026\/04\/il-9-and-blimp-1-protect-the-transcriptional-identity-of-group-2-innate-lymphocytes-in-allergic-asthma","title":{"rendered":"IL-9 and Blimp-1 protect the transcriptional identity of group 2 innate lymphocytes in allergic asthma"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/il-9-and-blimp-1-protect-the-transcriptional-identity-of-group-2-innate-lymphocytes-in-allergic-asthma.jpg\"><\/a><\/p>\n<p>Open Access.<\/p>\n<hr>\n<p>Zheng, Y., Giri, S., Zhang, J. et al. Nat Immunol (2026). <a href=\"https:\/\/doi.org\/10.1038\/s41590-026-02509-3\">https:\/\/doi.org\/10.1038\/s41590-026-02509-3<\/a> Abstract Allergic asthma is driven by type 2 immune responses, including type 2 innate lymphoid cells (ILC2s). Although ILC2s are activated by the tissue alarmins interleukin (IL)-33 and IL-25, these signals do not intrinsically enforce type 2 identity and the mechanisms that maintain type 2 cytokine expression remain unclear. Here we show that allergen-induced IL-33 and IL-25 rapidly induce IL-9, which in turn upregulates the transcriptional repressor Blimp-1 in ILC2s. Blimp-1 sustains type 2 immunity by directly repressing type 1 inflammatory programs, including expression of interferon-\u03b3 and tumor necrosis factor. Deletion of Blimp-1 in ILC2s increased type 1 cytokine production and reduced IL-5 and IL-13 expression, eosinophil recruitment and mucus production in the lung. In contrast, IL-9 expression was enhanced in the absence of Blimp-1, leading to increased mast cell recruitment. Together, these findings identify Blimp-1 as a key regulator of ILC2 transcriptional fidelity that stabilizes type 2 inflammation while constraining divergent inflammatory programs during allergic responses.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Open Access. Zheng, Y., Giri, S., Zhang, J. et al. Nat Immunol (2026). https:\/\/doi.org\/10.1038\/s41590-026-02509-3 Abstract Allergic asthma is driven by type 2 immune responses, including type 2 innate lymphoid cells (ILC2s). Although ILC2s are activated by the tissue alarmins interleukin (IL)-33 and IL-25, these signals do not intrinsically enforce type 2 identity and the mechanisms [\u2026]<\/p>\n","protected":false},"author":662,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-236054","post","type-post","status-publish","format-standard","hentry","category-futurism"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/236054","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/662"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=236054"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/236054\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=236054"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=236054"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=236054"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}