Abstract:
:The shape of most complex organ systems arises from the directed migration of cohesive groups of cells. Here, we dissect the role of the chemokine guidance receptor Cxcr4b in regulating the collective migration of one such cohesive tissue, the zebrafish lateral line primordium. Using in vivo imaging, we show that the shape and organization of the primordium is surprisingly labile, and that internal cell movements are uncoordinated in embryos with reduced Cxcr4b signaling. Genetic mosaic experiments reveal that single cxcr4b mutant cells can migrate in a directional manner when placed in wild-type primordia, but that they are specifically excluded from the leading edge. Moreover, a remarkably small number of SDF1a-responsive cells are able to organize an entire cxcr4b mutant primordium to restore migration and organogenesis in the lateral line. These results reveal a role for chemokine signaling in mediating the self-organizing migration of tissues during morphogenesis.
journal_name
Dev Celljournal_title
Developmental cellauthors
Haas P,Gilmour Ddoi
10.1016/j.devcel.2006.02.019subject
Has Abstractpub_date
2006-05-01 00:00:00pages
673-80issue
5eissn
1534-5807issn
1878-1551pii
S1534-5807(06)00119-5journal_volume
10pub_type
杂志文章abstract::One of today's most powerful technologies in biomedical research--the creation of mutant mice by gene targeting in embryonic stem (ES) cells--was finally celebrated in this year's Nobel Prize in Medicine. The history of how ES cells were first discovered and genetically manipulated highlights the importance of collabo...
journal_title:Developmental cell
pub_type: 传,社论,历史文章
doi:10.1016/j.devcel.2007.11.012
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journal_title:Developmental cell
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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