Publication Date:
2010-08-21
Description:
Quantifying cell behaviors in animal early embryogenesis remains a challenging issue requiring in toto imaging and automated image analysis. We designed a framework for imaging and reconstructing unstained whole zebrafish embryos for their first 10 cell division cycles and report measurements along the cell lineage with micrometer spatial resolution and minute temporal accuracy. Point-scanning multiphoton excitation optimized to preferentially probe the innermost regions of the embryo provided intrinsic signals highlighting all mitotic spindles and cell boundaries. Automated image analysis revealed the phenomenology of cell proliferation. Blastomeres continuously drift out of synchrony. After the 32-cell stage, the cell cycle lengthens according to cell radial position, leading to apparent division waves. Progressive amplification of this process is the rule, contrasting with classical descriptions of abrupt changes in the system dynamics.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Olivier, Nicolas -- Luengo-Oroz, Miguel A -- Duloquin, Louise -- Faure, Emmanuel -- Savy, Thierry -- Veilleux, Israel -- Solinas, Xavier -- Debarre, Delphine -- Bourgine, Paul -- Santos, Andres -- Peyrieras, Nadine -- Beaurepaire, Emmanuel -- New York, N.Y. -- Science. 2010 Aug 20;329(5994):967-71. doi: 10.1126/science.1189428.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory for Optics and Biosciences, Ecole Polytechnique, CNRS, INSERM, Palaiseau, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20724640" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Blastula/cytology
;
Cell Cycle
;
*Cell Lineage
;
Embryo, Nonmammalian/*cytology
;
Image Processing, Computer-Assisted
;
Microscopy/*methods
;
Zebrafish/*embryology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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