The evolution of mesoderm and its differentiation into cell types …
2022年10月21日 · Understanding how the mesoderm came about could tell us a great deal about how life on Earth evolved. The mesoderm is the name given to a specific group of cells found in animal embryos. These are the cells that go on to form the internal tissue of organisms, including musculature, hearts, kidneys and blood.
Ancestral mesodermal reorganization and evolution of the …
2015年11月9日 · Our findings indicate that the A/P patterning of the vertebrate dorsal mesoderm evolved from an amphioxus-like ancestral mesoderm through A/P polarization of mesodermal specification to divide into the unsegmented head mesoderm anteriorly and the segmented trunk somites posteriorly.
Evolution of the vertebrate skeleton: morphology, embryology, …
2015年1月13日 · Comparative embryologic analyses have shown that both types of skeleton have changed their mode of histogenesis during evolution. Although exoskeletons were thought to arise exclusively from the neural crest, recent experiments in teleosts have shown that exoskeletons in the trunk are mesodermal in origin.
Mesoderm induction: from caps to chips - Nature Reviews …
2006年5月1日 · Evidence is emerging for the importance of combinatorial signalling in regulating mesoderm formation. Mesoderm induction is generally conserved among vertebrates, albeit with interesting...
Early Stages of Animal Mesoderm Evolution | Russian Journal of ...
2022年4月22日 · The formation of the “mesodermal” gene repertoire characteristic to Bilateria, in the process of evolution in unicellular eukaryotes, Porifera and Cnidaria, served as an important link in the analysis of the origin of the mesoderm, the appearance of which provided a rapid increase in species diversity.
Mesoderm Induction - Cell Press
1998年8月21日 · The TGF-β signal is not only necessary for endoderm development, but is also a potent mesoderm-inducing factor that induces mesoderm from prospective ectodermal cells at the equator. When VegT is depleted, a low-level maternal signal induces mesoderm in the vegetal part of the embryo; we suggest it also weakly induces mesoderm at the equator.
Mesoderm specification and diversification: from single cells to ...
2019年12月1日 · Although mesoderm-derived cells are the highly represented within the vertebrate body, the mesoderm is the youngest germ layer in evolutionary terms [8]. Three germ layers are a hallmark feature of metazoans; from flatworms to humans.
HES and Mox genes are expressed during early mesoderm formation …
2021年9月9日 · The most ancient germ layers, the ectoderm and endoderm, are established during gastrulation, while the third germ layer, the mesoderm, is argued to be the youngest and probably evolved in the...
Gene profiling of head mesoderm in early zebrafish development ...
2019年7月6日 · Compared with other embryonic components of the head, such as placodes and cranial neural crest cells, our understanding of cranial mesoderm is limited and is restricted to few species. Here, we report the expression patterns of key genes in zebrafish head mesoderm at very early developmental stages.
Insights from diploblasts; the evolution of mesoderm and muscle
2008年1月15日 · Current data support a diploblastic ancestor of cnidarians, ctenophores, and triploblasts lacking striated muscle. The origin of both mesoderm and muscle are central questions in metazoan evolution. The majority of metazoan phyla are triploblasts, possessing three discrete germ layers.