{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T23:06:05Z","timestamp":1791327965125,"version":"4.3.1"},"reference-count":38,"publisher":"National Academy of Sciences","issue":"5","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2005,2]]},"abstract":"<jats:p>\n                    Heterozygous mutations in the human POU-homeobox\n                    <jats:italic>TCF2<\/jats:italic>\n                    (\n                    <jats:italic>vHNF1, HNF1<\/jats:italic>\n                    \u03b2) gene are associated with maturity-onset diabetes of the young, type 5, and abnormal urogenital tract development. Recently, pancreas atrophies have been reported in several maturity-onset diabetes of the young type 5 patients, suggesting that\n                    <jats:italic>TCF2<\/jats:italic>\n                    is required not only for adult pancreas function but also for its normal development.\n                    <jats:italic>Tcf2<\/jats:italic>\n                    -deficient mice die before gastrulation because of defective visceral endoderm formation. To investigate the role of this factor in pancreas development, we rescued this early lethality by tetraploid aggregation. We show that TCF2 has an essential function in the first steps of pancreas development, correlated with its expression domain that demarcates the entire pancreatic buds from the earliest stages. Lack of TCF2 results in pancreas agenesis by embryonic day 13.5. At earlier stages, only a dorsal bud rudiment forms transiently and expresses the transcription factors\n                    <jats:italic>Ipf1<\/jats:italic>\n                    and\n                    <jats:italic>Hlxb9<\/jats:italic>\n                    but lacks the key transcription factor involved in the acquisition of a pancreatic fate,\n                    <jats:italic>Ptf1a<\/jats:italic>\n                    , as well as all endocrine precursor cells. Regional specification of the gut also is perturbed in\n                    <jats:italic>Tcf2<\/jats:italic>\n                    <jats:sup>-\/-<\/jats:sup>\n                    embryos as manifested by ectopic expression of\n                    <jats:italic>Shh<\/jats:italic>\n                    and lack of\n                    <jats:italic>Ihh<\/jats:italic>\n                    and\n                    <jats:italic>Ipf1<\/jats:italic>\n                    in the posterior stomach and duodenum. Our results highlight the requirement of\n                    <jats:italic>Tcf2<\/jats:italic>\n                    for ensuring both accurate expression of key regulator molecules in the stomach\u2013duodenal epithelium and proper acquisition of the pancreatic fate. This study provides further insights into early molecular events controlling pancreas development and may contribute to the development of cell-replacement strategies for diabetes.\n                  <\/jats:p>","DOI":"10.1073\/pnas.0405776102","type":"journal-article","created":{"date-parts":[[2005,1,24]],"date-time":"2005-01-24T20:26:07Z","timestamp":1106598367000},"page":"1490-1495","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":247,"title":["Lack of TCF2\/vHNF1 in mice leads to pancreas agenesis"],"prefix":"10.1073","volume":"102","author":[{"given":"C.","family":"Haumaitre","sequence":"first","affiliation":[{"name":"Biologie du D\u00e9veloppement, Unit\u00e9 Mixte de Recherche 7622, Centre National de la Recherche Scientifique, Universit\u00e9 Pierre et Marie Curie, 9 Quai St. Bernard B\u0101t C, 75005 Paris, France; and Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale U381, 3 Avenue Moli\u00e8re, 67200 Strasbourg, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"E.","family":"Barbacci","sequence":"additional","affiliation":[{"name":"Biologie du D\u00e9veloppement, Unit\u00e9 Mixte de Recherche 7622, Centre National de la Recherche Scientifique, Universit\u00e9 Pierre et Marie Curie, 9 Quai St. Bernard B\u0101t C, 75005 Paris, France; and Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale U381, 3 Avenue Moli\u00e8re, 67200 Strasbourg, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M.","family":"Jenny","sequence":"additional","affiliation":[{"name":"Biologie du D\u00e9veloppement, Unit\u00e9 Mixte de Recherche 7622, Centre National de la Recherche Scientifique, Universit\u00e9 Pierre et Marie Curie, 9 Quai St. Bernard B\u0101t C, 75005 Paris, France; and Institut National de la Sant\u00e9 et de la Recherche M\u00e9dicale U381, 3 Avenue Moli\u00e8re, 67200 Strasbourg, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M. 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