{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T15:30:24Z","timestamp":1781105424653,"version":"3.54.1"},"reference-count":31,"publisher":"National Academy of Sciences","issue":"39","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[2009,9,29]]},"abstract":"<jats:p>\n                    Extracellular signal-regulated kinase 3 (Erk3) is an atypical member of the mitogen-activated protein (MAP) kinase family. No function has yet been ascribed to this MAP kinase. Here we show that targeted disruption of the\n                    <jats:italic>Mapk6<\/jats:italic>\n                    gene (encoding Erk3) leads to intrauterine growth restriction, associated with marked pulmonary hypoplasia, and early neonatal death during the first day of life. Around 40% of Erk3\n                    <jats:sup>\u2212\/\u2212<\/jats:sup>\n                    neonates die within minutes after birth from acute respiratory failure. Erk3-deficient mice have normal lung-branching morphogenesis, but show delayed lung maturation characterized by decreased sacculation, atelectasis, and defective type II pneumocyte differentiation. Interestingly, in utero administration of glucocorticoid promoted fetal lung maturity and rescued differentiation of type II cells, but failed to alter the neonatal lethality. We observed that loss of Erk3 retards intrauterine growth, as reflected by a marked reduction in fetal lung, heart, and liver weights, and by low body weight at birth. Importantly, we found that insulin-like growth factor (IGF)-2 levels are decreased in the serum of Erk3-deficient mice. Our findings reveal a critical role for Erk3 in the establishment of fetal growth potential and pulmonary function in the mouse.\n                  <\/jats:p>","DOI":"10.1073\/pnas.0900919106","type":"journal-article","created":{"date-parts":[[2009,9,16]],"date-time":"2009-09-16T00:10:03Z","timestamp":1253059803000},"page":"16710-16715","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":67,"title":["Loss of Erk3 function in mice leads to intrauterine growth restriction, pulmonary immaturity, and neonatal lethality"],"prefix":"10.1073","volume":"106","author":[{"given":"Sonia","family":"Klinger","sequence":"first","affiliation":[{"name":"Institut de Recherche en Immunologie et Canc\u00e9rologie and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin","family":"Turgeon","sequence":"additional","affiliation":[{"name":"Institut de Recherche en Immunologie et Canc\u00e9rologie and"},{"name":"Molecular Biology, Universit\u00e9 de Montr\u00e9al, Montreal, QC, Canada H3C 3J7;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kim","family":"L\u00e9vesque","sequence":"additional","affiliation":[{"name":"Institut de Recherche en Immunologie et Canc\u00e9rologie and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Geoffrey A.","family":"Wood","sequence":"additional","affiliation":[{"name":"Department of Pathobiology, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada N1G 2W1;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kjersti M.","family":"Aagaard-Tillery","sequence":"additional","affiliation":[{"name":"Department of Pediatrics, Division of Neonatology, University of Utah Health Sciences, Salt Lake City, UT 84112; and"},{"name":"Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, Baylor College of Medicine, Houston, TX 77030"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvain","family":"Meloche","sequence":"additional","affiliation":[{"name":"Institut de Recherche en Immunologie et Canc\u00e9rologie and"},{"name":"Departments of fPharmacology and"},{"name":"Molecular Biology, Universit\u00e9 de Montr\u00e9al, Montreal, QC, Canada H3C 3J7;"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[2009,9,29]]},"reference":[{"key":"e_1_3_3_1_2","doi-asserted-by":"publisher","DOI":"10.1210\/edrv.22.2.0428"},{"key":"e_1_3_3_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.bbamcr.2006.11.001"},{"key":"e_1_3_3_3_2","doi-asserted-by":"publisher","DOI":"10.1016\/0092-8674(91)90098-J"},{"key":"e_1_3_3_4_2","first-page":"1575","article-title":"Primary structure, expression and chromosomal locus of a human homolog of rat ERK3","volume":"13","author":"Meloche S","year":"1996","unstructured":"S Meloche, BG Beatty, J Pellerin, Primary structure, expression and chromosomal locus of a human homolog of rat ERK3. 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