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Origin of the Chordate Notochord [PDF]

open access: yesDiversity, 2021
The phylum of Chordata is defined based on the discovery of a coelom-like dorsal notochord in ascidian and amphioxus embryos. Chordata can be classified into three subphylums, Cephalochordata, Urochordata, and Vertebrata, united by the presence of a ...
Zihao Sui, Zhihan Zhao, Bo Dong
doaj   +4 more sources

Eph regulates dorsoventral asymmetry of the notochord plate and convergent extension-mediated notochord formation. [PDF]

open access: yesPLoS ONE, 2010
The notochord is a signaling center required for the patterning of the vertebrate embryonic midline, however, the molecular and cellular mechanisms involved in the formation of this essential embryonic tissue remain unclear.
Izumi Oda-Ishii   +2 more
doaj   +2 more sources

Diverse logics and grammar encode notochord enhancers

open access: yesCell Reports, 2023
Summary: The notochord is a defining feature of all chordates. The transcription factors Zic and ETS regulate enhancer activity within the notochord. We conduct high-throughput screens of genomic elements within developing Ciona embryos to understand how
Benjamin P. Song   +6 more
doaj   +2 more sources

Spine Patterning Is Guided by Segmentation of the Notochord Sheath

open access: yesCell Reports, 2018
Summary: The spine is a segmented axial structure made of alternating vertebral bodies (centra) and intervertebral discs (IVDs) assembled around the notochord.
Kaelyn Sumigray   +2 more
exaly   +3 more sources

Notochord Cells in Intervertebral Disc Development and Degeneration

open access: yesJournal of Developmental Biology, 2016
The intervertebral disc is a complex structure responsible for flexibility, multi-axial motion, and load transmission throughout the spine. Importantly, degeneration of the intervertebral disc is thought to be an initiating factor for back pain. Due to a
Cheryle Seguin, Matthew McCann
exaly   +3 more sources

Prenatal muscle forces are necessary for vertebral segmentation and disc structure, but not for notochord involution in mice [PDF]

open access: yesEuropean Cells & Materials, 2021
Embryonic muscle forces are necessary for normal vertebral development and spinal curvature, but their involvement in intervertebral disc (IVD) development remains unclear.
A Levillain   +7 more
doaj   +1 more source

Tissue-specific expression of carbohydrate sulfotransferases drives keratan sulfate biosynthesis in the notochord and otic vesicles of Xenopus embryos

open access: yesFrontiers in Cell and Developmental Biology, 2023
Keratan sulfate (KS) is a glycosaminoglycan that is enriched in vertebrate cornea, cartilage, and brain. During embryonic development, highly sulfated KS (HSKS) is first detected in the developing notochord and then in otic vesicles; therefore, HSKS has ...
Yuuri Yasuoka, Yuuri Yasuoka
doaj   +1 more source

Protocadherin-1 is expressed in the notochord of mouse embryo but is dispensable for its formation

open access: yesBiochemistry and Biophysics Reports, 2021
Notochord is an embryonic midline structure that serves as mechanical support for axis elongation and the signaling center for the surrounding tissues.
Kanako Fukunaga   +4 more
doaj   +1 more source

Xbp1 and Brachyury establish an evolutionarily conserved subcircuit of the notochord gene regulatory network

open access: yeseLife, 2022
Gene regulatory networks coordinate the formation of organs and structures that compose the evolving body plans of different organisms. We are using a simple chordate model, the Ciona embryo, to investigate the essential gene regulatory network that ...
Yushi Wu   +8 more
doaj   +1 more source

Gene expression in notochord and nuclei pulposi: a study of gene families across the chordate phylum

open access: yesBMC Ecology and Evolution, 2023
The transition from notochord to vertebral column is a crucial milestone in chordate evolution and in prenatal development of all vertebrates.
Rahul Raghavan   +14 more
doaj   +1 more source

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