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- W2150803508 abstract "It is already established that cholinesterases (ChEs) appear in every embryonic blastema at a very early stage of development, independently from innervation. Embryonic butyrylcholinesterase (BChE) is typically found in cells engaged in proliferation processes, while acetylcholinesterase (AChE) is expressed by cells undergoing morphogenetic processes. In order to better define the regulation of cholinesterases during development, we examined their expressions during in vitro differentiation of two murine embryonic stem cell lines by reverse transcription polymerase chain reaction, histochemistry and enzyme activity measurements. AChE and BChE activity and mRNA were present in the undifferentiated stem cells. To test whether the ChEs expression is regulated during differentiation, we employed the embryoid bodies (EBs) culture method, allowing the cells to differentiate, to then collect them at various stages in culture. Interestingly, phases of differentiation were accompanied by increased AChE transcripts; BChE expression was constant, decreasing at later differentiation stages. Cholinesterase activities showed corresponding patterns, with AChE activity increasing at later stages in culture and BChE slightly decreasing. Histochemistry revealed that AChE and BChE activities were mutually exclusive, being expressed by different cell subpopulations. Thus, we have demonstrated that mouse embryonic stem cells express cholinesterases, the enzymes are functional and their expression is regulated during differentiation. Therefore, it appears that their functions under these conditions are not related to synaptic transmission, but for the developmental processes." @default.
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- W2150803508 date "2008-09-01" @default.
- W2150803508 modified "2023-10-03" @default.
- W2150803508 title "Characterisation of cholinesterase expression during murine embryonic stem cell differentiation" @default.
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- W2150803508 doi "https://doi.org/10.1016/j.cbi.2008.05.034" @default.
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