PMID- 25793997 OWN - NLM STAT- MEDLINE DCOM- 20160208 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 3 DP - 2015 TI - Definition of critical periods for Hedgehog pathway antagonist-induced holoprosencephaly, cleft lip, and cleft palate. PG - e0120517 LID - 10.1371/journal.pone.0120517 [doi] LID - e0120517 AB - The Hedgehog (Hh) signaling pathway mediates multiple spatiotemporally-specific aspects of brain and face development. Genetic and chemical disruptions of the pathway are known to result in an array of structural malformations, including holoprosencephaly (HPE), clefts of the lip with or without cleft palate (CL/P), and clefts of the secondary palate only (CPO). Here, we examined patterns of dysmorphology caused by acute, stage-specific Hh signaling inhibition. Timed-pregnant wildtype C57BL/6J mice were administered a single dose of the potent pathway antagonist vismodegib at discrete time points between gestational day (GD) 7.0 and 10.0, an interval approximately corresponding to the 15th to 24th days of human gestation. The resultant pattern of facial and brain dysmorphology was dependent upon stage of exposure. Insult between GD7.0 and GD8.25 resulted in HPE, with peak incidence following exposure at GD7.5. Unilateral clefts of the lip extending into the primary palate were also observed, with peak incidence following exposure at GD8.875. Insult between GD9.0 and GD10.0 resulted in CPO and forelimb abnormalities. We have previously demonstrated that Hh antagonist-induced cleft lip results from deficiency of the medial nasal process and show here that CPO is associated with reduced growth of the maxillary-derived palatal shelves. By defining the critical periods for the induction of HPE, CL/P, and CPO with fine temporal resolution, these results provide a mechanism by which Hh pathway disruption can result in "non-syndromic" orofacial clefting, or HPE with or without co-occurring clefts. This study also establishes a novel and tractable mouse model of human craniofacial malformations using a single dose of a commercially available and pathway-specific drug. FAU - Heyne, Galen W AU - Heyne GW AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Melberg, Cal G AU - Melberg CG AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Doroodchi, Padydeh AU - Doroodchi P AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Parins, Kia F AU - Parins KF AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Kietzman, Henry W AU - Kietzman HW AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Everson, Joshua L AU - Everson JL AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America; Molecular and Environmental Toxicology Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Ansen-Wilson, Lydia J AU - Ansen-Wilson LJ AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America. FAU - Lipinski, Robert J AU - Lipinski RJ AD - Department of Comparative Biosciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States of America; Molecular and Environmental Toxicology Center, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America. LA - eng GR - R00 DE022101/DE/NIDCR NIH HHS/United States GR - T32 ES007015/ES/NIEHS NIH HHS/United States GR - R00DE022101-02/DE/NIDCR NIH HHS/United States GR - T32ES007015-37/ES/NIEHS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20150320 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Anilides) RN - 0 (Hedgehog Proteins) RN - 0 (HhAntag691) RN - 0 (Pyridines) SB - IM MH - Anilides/*adverse effects MH - Animals MH - Cleft Lip/chemically induced/metabolism/*pathology MH - Cleft Palate/chemically induced/metabolism/*pathology MH - Face/abnormalities MH - Female MH - Hedgehog Proteins/*antagonists & inhibitors/metabolism MH - Holoprosencephaly/chemically induced/metabolism/*pathology MH - Mice, Inbred C57BL MH - Morphogenesis/drug effects MH - Phenotype MH - Pregnancy MH - Pyridines/*adverse effects MH - *Signal Transduction/drug effects PMC - PMC4368540 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/03/21 06:00 MHDA- 2016/02/09 06:00 PMCR- 2015/03/20 CRDT- 2015/03/21 06:00 PHST- 2014/11/24 00:00 [received] PHST- 2015/02/04 00:00 [accepted] PHST- 2015/03/21 06:00 [entrez] PHST- 2015/03/21 06:00 [pubmed] PHST- 2016/02/09 06:00 [medline] PHST- 2015/03/20 00:00 [pmc-release] AID - PONE-D-14-52130 [pii] AID - 10.1371/journal.pone.0120517 [doi] PST - epublish SO - PLoS One. 2015 Mar 20;10(3):e0120517. doi: 10.1371/journal.pone.0120517. eCollection 2015.