scholarly journals Lineage Establishment and Progression within the Inner Cell Mass of the Mouse Blastocyst Requires FGFR1 and FGFR2

2017 ◽  
Vol 41 (5) ◽  
pp. 496-510.e5 ◽  
Author(s):  
Minjung Kang ◽  
Vidur Garg ◽  
Anna-Katerina Hadjantonakis

Development ◽  
1987 ◽  
Vol 100 (2) ◽  
pp. 325-332
Author(s):  
C.L. Garbutt ◽  
M.H. Johnson ◽  
M.A. George

Aggregate 8-cell embryos were constructed from four 2/8 pairs of blastomeres, one of which was marked with a short-term cell lineage marker and was also either 4 h older (derived from an early-dividing 4-cell) or 4 h younger (derived from a late-dividing 4-cell) than the other three pairs. The aggregate embryos were cultured to the 16-cell stage, at which time a second marker was used to label the outside cell population. The embryos were then disaggregated and each cell was examined to determine its labelling pattern. From this analysis, we calculated the relative contributions to the inside cell population of the 16-cell embryo of older and younger cells. Older cells were found to contribute preferentially. However, if the construction of the aggregate 8-cell embryo was delayed until each of the contributing 2/8 cell pairs had undergone intercellular flattening and then had been exposed to medium low in calcium to reverse this flattening immediately prior to aggregation, the advantage possessed by the older cells was lost. These results support the suggestion that older cells derived from early-dividing 4-cell blastomeres contribute preferentially to the inner cell mass as a result of being early-flattening cells.



Development ◽  
1972 ◽  
Vol 28 (2) ◽  
pp. 279-312
Author(s):  
R. L. Gardner ◽  
M. H. Johnson

1. Inner cell mass (ICM) and trophoblast were isolated from 3½-day post-coitum mouse blastocysts by microsurgery. 2. Trophoblastic fragments formed vesicles in culture but did not aggregate with other such fragments. They proved as effective as intact blastocysts in inducing decidua in recipient uteri, but thereafter failed to proliferate. 3. Isolated ICMs remained as solid balls of cells that readily aggregated in pairs or groups in culture but failed to induce implantation changes in receptive uteri. 4. Possible explanations for the failure of isolated trophoblast to proliferate after implantation are discussed. It is argued that presence of ICM tissue is necessary for trophoblast proliferation, and suggested that the ICM exerts its effect by controlling development of the ectoplacental cone.



Stem Cells ◽  
2013 ◽  
Vol 31 (9) ◽  
pp. 1932-1941 ◽  
Author(s):  
Jérôme Artus ◽  
Minjung Kang ◽  
Michel Cohen-Tannoudji ◽  
Anna-Katerina Hadjantonakis


1993 ◽  
Vol 267 (3) ◽  
pp. 337-343 ◽  
Author(s):  
Laura C. Hewitson ◽  
Henry J. Leese


2012 ◽  
Vol 287 (39) ◽  
pp. 33094-33103 ◽  
Author(s):  
Martin B. Lee ◽  
Megan Kooistra ◽  
Baohua Zhang ◽  
Sandy Slow ◽  
Amanda L. Fortier ◽  
...  


Development ◽  
2014 ◽  
Vol 141 (5) ◽  
pp. 1001-1010 ◽  
Author(s):  
G. C. Le Bin ◽  
S. Munoz-Descalzo ◽  
A. Kurowski ◽  
H. Leitch ◽  
X. Lou ◽  
...  




2020 ◽  
Author(s):  
D Chandel ◽  
C H Naik ◽  
S Gayen

SummaryRecent studies have provided substantial evidence supporting Ohno’s hypothesis that upregulation of active X chromosome genes balances the dosage relative to autosomal genes. Here, we found the evidence for erasure of active X-chromosome upregulation upon reactivation of inactive X in female cells during iPSC reprogramming and in the inner cell mass of mouse blastocyst. Moreover, our analysis revealed that the kinetics of erasure of X upregulation is tightly linked with the dynamics of X reactivation.Abstract Figure



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