{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T15:48:51Z","timestamp":1781538531008,"version":"3.54.5"},"reference-count":46,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2014,6,17]],"date-time":"2014-06-17T00:00:00Z","timestamp":1402963200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"JSPS","award":["24570228"],"award-info":[{"award-number":["24570228"]}]},{"name":"JSPS","award":["20592154"],"award-info":[{"award-number":["20592154"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Evolution and Development"],"published-print":{"date-parts":[[2014,7]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:sec><jats:label\/><jats:p>Compared to placental mammals, marsupials have short gestation period, and their neonates are relatively immature. Despite these features, marsupial neonates must travel from the birth canal to the teat, suckle and digest milk to complete development. Thus, certain organs and tissues of marsupial neonates, such as forelimbs to crawl and jaw elements to suckle, must develop early. Previous reports showed that cranial neural crest (CNC) cells, as the source of ectomesenchyme of jaw elements, are generated significantly early in gray short\u2010tailed opossum (<jats:italic>Monodelphis domestica<\/jats:italic>) compared to other amniote models, such as mouse. In this study, we examined the expression of genes known to be important for neural crest formation, such as <jats:italic>BMP2<\/jats:italic>\/<jats:italic>BMP4<\/jats:italic> (neural crest inducer), <jats:italic>Pax7<\/jats:italic> (neural border specifier), <jats:italic>Snail1<\/jats:italic> and <jats:italic>Sox9<\/jats:italic>\/<jats:italic>Sox10<\/jats:italic> (neural crest specifier) in <jats:italic>Monodelphis domestica<\/jats:italic>, and compared the expression patterns with those in mouse, chicken, and gecko embryos. Among those genes, the expression of <jats:italic>Sox9<\/jats:italic> was turned on early and broadly in the premigratory CNC cells, and persisted in the ectomesenchyme of the cranial <jats:italic>anlagen<\/jats:italic> in opossum embryos. In contrast, <jats:italic>Sox9<\/jats:italic> expression diminished in the CNC cells of other animals at the early phase of migration. Comparison of the onset of <jats:italic>Pax7<\/jats:italic> and <jats:italic>Sox9<\/jats:italic> expression revealed that <jats:italic>Sox9<\/jats:italic> expression in the prospective CNC was earlier and broader than <jats:italic>Pax7<\/jats:italic> expression in opossum, suggesting that the sequence of border specification and neural crest specification is altered. This study provides the first clue for understanding the molecular basis for the heterochronic development of the CNC cells and jaw elements in marsupials.<\/jats:p><\/jats:sec>","DOI":"10.1111\/ede.12083","type":"journal-article","created":{"date-parts":[[2015,10,13]],"date-time":"2015-10-13T08:40:49Z","timestamp":1444725649000},"page":"197-206","source":"Crossref","is-referenced-by-count":30,"title":["Comparative gene expression analyses reveal heterochrony for <i>Sox9<\/i> expression in the cranial neural crest during marsupial development"],"prefix":"10.1111","volume":"16","author":[{"given":"Yoshio","family":"Wakamatsu","sequence":"first","affiliation":[{"name":"Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART) Tohoku University Graduate School of Medicine Sendai Miyagi 980\u20108575 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tadashi","family":"Nomura","sequence":"additional","affiliation":[{"name":"Department of Biology Kyoto Prefectural University of Medicine Kyoto 603\u20108334 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Noriko","family":"Osumi","sequence":"additional","affiliation":[{"name":"Department of Developmental Neuroscience, United Centers for Advanced Research and Translational Medicine (ART) Tohoku University Graduate School of Medicine Sendai Miyagi 980\u20108575 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kunihiro","family":"Suzuki","sequence":"additional","affiliation":[{"name":"Department of Biology Nihon University School of Dentistry at Matsudo Chiba 271\u20108587 Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2014,6,17]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1073\/pnas.0401711101"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature04684"},{"key":"e_1_2_6_4_1","doi-asserted-by":"publisher","DOI":"10.1146\/annurev.cellbio.042308.113245"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0165-3806(00)00049-3"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1093\/cercor\/bhp168"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1242\/dev.00808"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.devcel.2004.12.010"},{"key":"e_1_2_6_9_1","first-page":"1325","article-title":"The divergent development of the apical ectodermal ridge in the marsupial Monodelphis domestica","volume":"290","author":"Debora C. 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