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Cerebral organoids, three-dimensional cultures that model organogenesis, provide a new platform to investigate human brain development. High cost, variability, and tissue heterogeneity limit their broad applications. Here, we developed a miniaturized spinning bioreactor (SpinΩ) to generate forebrain-specific organoids from human iPSCs. These organoids(More)
Fab fragments of rabbit anti-embryonal carcinoma cells IgG dramatically perturb cell-cell interactions between embryonal carcinoma cells and between early mouse embryo blastomeres. These antibodies prevent compaction of preimplantation embryos (or trigger their decompaction) and have similar effects on embryonal carcinoma cells. They probably act through(More)
Compaction, a process of cell-cell adhesion between mouse blastomeres or between embryonal carcinoma (EC) cells requires calcium ions. A decompaction effect similar to that observed in the absence of Ca2+ is triggered by Fab fragments of rabbit anti-EC IgG. This effect occurs through the recognition of a specific cell-surface glycoprotein named uvomorulin.(More)
In many species, the early post-fertilization development of the egg appears to occur mainly under maternal control and does not require transcription of the embryonic genome. In the mouse this situation is restricted to the one-cell stage; activation of the embryonic genome occurs at the late two-cell stage and results in a drastic change in the spectrum(More)
A line of embryonal carcinoma cells, PCC7-S, established in vitro from a spontaneous testicular teratocarcinoma, has been studied. Upon removing the cells from a low density monolayer culture system and permitting the cells to form aggregates in suspension, we observed a change of several physical and biochemical parameters: (a) reduction in average cell(More)
The hybrid plasmid pK4 containing the early genes of the simian virus SV-40, under the control of the adenovirus type 5 E1a promoter, was introduced into the multipotent embryonal carcinoma (EC) 1003. Expression of the SV-40 oncogenes was observed at the EC cell stage, and this allowed the derivation of immortalized cells corresponding to early stages of(More)
The use of established cell lines of various types has provided information on the properties of certain stem cells and on the conditions of their differentiation. No bone-forming cell line has so far been described. We report here the isolation, from in vitro differentiating teratocarcinoma cells, of a line which, on subcutaneous injection into syngeneic(More)
The expression of the H-Y antigen has been tested on several human lymphoid lines and mouse teratocarcinoma cell lines during differentiation. The human male lymphoid cell line Raji is a very useful target for studies of the H-Y antigen by lymphocytotoxicity test with rat anti-H-Y sera. With a few exceptions, all cells carrying the Y chromosome were H-Y(More)