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- Title
Sea lamprey enlightens the origin of the coupling of retinoic acid signaling to vertebrate hindbrain segmentation.
- Authors
Bedois, Alice M. H.; Parker, Hugo J.; Price, Andrew J.; Morrison, Jason A.; Bronner, Marianne E.; Krumlauf, Robb
- Abstract
Retinoic acid (RA) is involved in antero-posterior patterning of the chordate body axis and, in jawed vertebrates, has been shown to play a major role at multiple levels of the gene regulatory network (GRN) regulating hindbrain segmentation. Knowing when and how RA became coupled to the core hindbrain GRN is important for understanding how ancient signaling pathways and patterning genes can evolve and generate diversity. Hence, we investigated the link between RA signaling and hindbrain segmentation in the sea lamprey Petromyzon marinus, an important jawless vertebrate model providing clues to decipher ancestral vertebrate features. Combining genomics, gene expression, and functional analyses of major components involved in RA synthesis (Aldh1as) and degradation (Cyp26s), we demonstrate that RA signaling is coupled to hindbrain segmentation in lamprey. Thus, the link between RA signaling and hindbrain segmentation is a pan vertebrate feature of the hindbrain and likely evolved at the base of vertebrates. Retinoic acid signaling is involved in patterning the embryonic antero-posterior axis, and also regulates hindbrain segmentation in jawed vertebrates. Here they show that retinoic acid signaling plays important roles in hindbrain segmentation in a jawless vertebrate, the lamprey, thus indicating this feature of hindbrain development is conserved in all vertebrates.
- Subjects
SEA lamprey; RHOMBENCEPHALON; TRETINOIN; GENE regulatory networks; VERTEBRATES; WNT signal transduction; G protein coupled receptors
- Publication
Nature Communications, 2024, Vol 15, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-024-45911-x