Abstract：
:Stinging cells called cnidocytes are a defining trait of the cnidarians (sea anemones, corals, jellyfish, and their relatives). In hydrozoan cnidarians such as Hydra, cnidocytes develop from interstitial stem cells set aside in the ectoderm. It is less clear how cnidocytes develop outside the Hydrozoa, as other cnidarians appear to lack interstitial stem cells. We addressed this question by studying cnidogenesis in the moon jellyfish (Aurelia) through the visualization of minicollagen-a protein associated with cnidocyte development-as well as transmission electron microscopy. We discovered that developing cnidoblasts are rare or absent in feeding structures rich in mature cnidocytes, such as tentacles and lappets. Using transmission electron microscopy, we determined that the progenitors of cnidocytes have traits consistent with epitheliomuscular cells. Our data suggests a dynamic where cnidocytes develop at high concentrations in the epithelium of more proximal regions, and subsequently migrate to more distal regions where they exhibit high usage and turnover. Similar to some anthozoans, cnidocytes in Aurelia do not appear to be generated by interstitial stem cells; instead, epitheliomuscular cells appear to be the progenitor cell type. This observation polarizes the evolution of cnidogenesis, and raises the question of how interstitial stem cells came to regulate cnidogenesis in hydrozoans.
journal_name
Evol Devjournal_title
Evolution & developmentauthors
Gold DA,Lau CLF,Fuong H,Kao G,Hartenstein V,Jacobs DKdoi
10.1111/ede.12278subject
Has Abstractpub_date
2019-03-01 00:00:00pages
72-81issue
2eissn
1520-541Xissn
1525-142Xjournal_volume
21pub_type
杂志文章abstract：:Pax family genes encode a class of transcription factors that regulate various developmental processes. To shed light on the evolutionary history of these genes in Panarthropoda (Onychophora + Tardigrada + Arthropoda), we analyzed the Pax repertoire in the embryonic and adult transcriptomes of the onychophoran Euperip...
journal_title：Evolution & development
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journal_title：Evolution & development
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pub_type： 杂志文章,评审
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journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12136
更新日期：2015-09-01 00:00:00
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journal_title：Evolution & development
pub_type： 杂志文章
doi：10.1111/ede.12246
更新日期：2018-01-01 00:00:00
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journal_title：Evolution & development
pub_type： 杂志文章
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更新日期：2002-01-01 00:00:00
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pub_type： 杂志文章
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journal_title：Evolution & development
pub_type： 杂志文章
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journal_title：Evolution & development
pub_type： 杂志文章
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更新日期：2000-07-01 00:00:00
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pub_type： 杂志文章
doi：10.1046/j.1525-142x.2002.02017.x
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journal_title：Evolution & development
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更新日期：2005-07-01 00:00:00
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journal_title：Evolution & development
pub_type： 杂志文章
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更新日期：2013-09-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
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journal_title：Evolution & development
pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2000-05-01 00:00:00
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journal_title：Evolution & development
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更新日期：2002-03-01 00:00:00
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更新日期：2015-11-01 00:00:00
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journal_title：Evolution & development
pub_type： 杂志文章
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更新日期：2003-07-01 00:00:00
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pub_type： 杂志文章
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更新日期：2007-05-01 00:00:00
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pub_type： 杂志文章
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更新日期：2016-05-01 00:00:00
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pub_type： 杂志文章
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更新日期：2013-07-01 00:00:00
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