{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T02:56:46Z","timestamp":1786935406072,"version":"build-2736575974"},"reference-count":43,"publisher":"American Physiological Society","issue":"2","funder":[{"DOI":"10.13039\/501100000925","name":"Department of Health, Australian Government | National Health and Medical Research Council (NHMRC)","doi-asserted-by":"publisher","award":["1006688"],"award-info":[{"award-number":["1006688"]}],"id":[{"id":"10.13039\/501100000925","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Gastrointestinal and Liver Physiology"],"published-print":{"date-parts":[[2019,2,1]]},"abstract":"<jats:p>Expression of the cytokine IL-11 is elevated in human Helicobacter pylori infection and progressively increases with worsening gastric pathology. Additionally, IL-11 is required for tumor development in STAT3-dependent murine models of gastric cancer (GC) and, when administered acutely, causes resolving atrophic gastritis. However, it is unclear whether locally elevated IL-11 ligand expression can, in isolation from oncogenic gp130-JAK-STAT pathway mutations, initiate GC pathogenesis. Here we developed a transgenic mouse model of stomach-specific (keratin 19 promoter) IL-11 ligand overexpression. Keratin 19 promoter-IL-11 transgenic ( K19-IL11<jats:sup>Tg<\/jats:sup>) mice showed specific IL-11 overexpression in gastric corpus and antrum but not elsewhere in the gastrointestinal tract or in other tissues. K19-IL11<jats:sup>Tg<\/jats:sup>mice developed spontaneous premalignant disease of the gastric epithelium, progressing from atrophic gastritis to TFF2-positive metaplasia and severe epithelial hyperplasia, including adenoma-like lesions in a subset of older (1 yr old) animals. Although locally advanced, the hyperplastic lesions remained noninvasive. H. pylori infection in K19-IL11<jats:sup>Tg<\/jats:sup>mice accelerated some aspects of the premalignant phenotype. Finally, K19-IL11<jats:sup>Tg<\/jats:sup>mice had splenomegaly in association with elevated serum IL-11, with spleens showing an expanded myeloid compartment. Our results provide direct in vivo functional evidence that stomach-specific overexpression of IL-11, in isolation from germline gp130-JAK-STAT3 genetic drivers, is sufficient for premalignant progression. These findings have important functional implications for human GC, in which frequent IL-11 overexpression occurs in the reported absence of somatic mutations in gp130 signaling components.<\/jats:p><jats:p>NEW &amp; NOTEWORTHY We provide direct in vivo functional evidence that stomach-specific overexpression of the cytokine IL-11, in isolation from gp130-JAK-STAT3 pathway mutations, can trigger spontaneous atrophic gastritis progressing to locally advanced epithelial hyperplasia (but not dysplasia or carcinoma), which does not require, but may be accelerated by, concomitant Helicobacter pylori infection.<\/jats:p>","DOI":"10.1152\/ajpgi.00304.2018","type":"journal-article","created":{"date-parts":[[2018,12,6]],"date-time":"2018-12-06T16:01:33Z","timestamp":1544112093000},"page":"G251-G262","source":"Crossref","is-referenced-by-count":17,"title":["Overexpression of IL-11 promotes premalignant gastric epithelial hyperplasia in isolation from germline gp130-JAK-STAT driver mutations"],"prefix":"10.1152","volume":"316","author":[{"given":"Jon N.","family":"Buzzelli","sequence":"first","affiliation":[{"name":"Murdoch Children's Research Institute, The Royal Children\u2019s Hospital, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Louise","family":"O\u2019Connor","sequence":"additional","affiliation":[{"name":"Murdoch Children's Research Institute, The Royal Children\u2019s Hospital, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michelle","family":"Scurr","sequence":"additional","affiliation":[{"name":"Murdoch Children's Research Institute, The Royal Children\u2019s Hospital, Parkville, Victoria, Australia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharleen","family":"Chung Nien Chin","sequence":"additional","affiliation":[{"name":"Murdoch Children's Research Institute, The Royal Children\u2019s Hospital, Parkville, Victoria, 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