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Shaker, Mohammed R.; Lee, Ju-Hyun; Kim, Kyung Hyun; Ban, Saeli; Kim, Veronica Jihyun; Kim, Joo Yeon; Lee, Ji Yeoun; Sun, Woong
Life Sciences, 10/2021, Letnik: 282Journal Article
During vertebrate development, the posterior end of the embryo progressively elongates in a head-to-tail direction to form the body plan. Recent lineage tracing experiments revealed that bi-potent progenitors, called neuromesodermal progenitors (NMPs), produce caudal neural and mesodermal tissues during axial elongation. However, their precise location and contribution to spinal cord development remain elusive. Here we used NMP-specific markers (Sox2 and BraT) and a genetic lineage tracing system to localize NMP progeny in vivo. Sox2 and BraT double positive cells were initially located at the tail tip, but were later found in the caudal neural tube, which is a unique feature of mouse development. In the neural tube, they produced neural progenitors (NPCs) and contributed to the spinal cord gradually along the AP axis during axial elongation. Interestingly, NMP-derived NPCs preferentially contributed to the ventral side first and later to the dorsal side at the lumbar spinal cord level, which may be associated with atypical junctional neurulation in mice. Our current observations detail the contribution of NMP progeny to spinal cord elongation and provide insights into how different species uniquely execute caudal morphogenesis. •The mouse and chick display distinct patterns of NMPs distribution during neural tube elongation.•NPCs derived from NMPs are sequentially added to the caudal part of the spinal cord during axial elongation.•NMPs-derived NPCs differently contribute to the AP and DV axis depending on their birthdates.•NMPs contribute toward the generation of spinal DRG, sensory neurons, commissural neurons and motoneurons during development.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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