New perspectives on pharyngeal dorsoventral patterning in development and evolution of the vertebrate jaw
- Authors
- Medeiros, D.M., and Crump, J.G.
- ID
- ZDB-PUB-120927-7
- Date
- 2012
- Source
- Developmental Biology 371(2): 121-135 (Review)
- Registered Authors
- Crump, Gage DeKoeyer, Medeiros, Daniel
- Keywords
- craniofacial, head skeleton, pharynx, jaw, face, dorsoventral, middle ear, Endothelin1 (Edn1), bone morphogenetic protein (BMP), jagged-notch, hand, dlx, msx, gnathostome, agnathan, lamprey, evolution
- MeSH Terms
-
- Animals
- Body Patterning*
- Bone Morphogenetic Proteins/genetics
- Bone Morphogenetic Proteins/metabolism
- Gene Expression Regulation, Developmental*
- Jaw/embryology
- Jaw/metabolism*
- Lampreys/embryology
- Lampreys/growth & development
- Maxillofacial Development*
- Mice
- Pharynx/embryology
- Pharynx/growth & development*
- Receptors, Notch/genetics
- Receptors, Notch/metabolism
- Signal Transduction
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Zebrafish
- PubMed
- 22960284 Full text @ Dev. Biol.
Patterning of the vertebrate facial skeleton involves the progressive partitioning of neural-crest-derived skeletal precursors into distinct subpopulations along the anteroposterior (AP) and dorsoventral (DV) axes. Recent evidence suggests that complex interactions between multiple signaling pathways, in particular Endothelin-1 (Edn1), Bone Morphogenetic Protein (BMP), and Jagged–Notch, are needed to pattern skeletal precursors along the DV axis. Rather than directly determining the morphology of individual skeletal elements, these signals appear to act through several families of transcription factors, including Dlx, Msx, and Hand, to establish dynamic zones of skeletal differentiation. Provocatively, this patterning mechanism is largely conserved from mouse and zebrafish to the jawless vertebrate, lamprey. This implies that the diversification of the vertebrate facial skeleton, including the evolution of the jaw, was driven largely by modifications downstream of a conversed pharyngeal DV patterning program.