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Cell differentiation in vitro and the expression of Oct-2 protein and oct-2 RNA
E V Pankratova1, E V Sytina, A G Stepchenko
1V.A. Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow.
Abstract:
Expression of the oct-2 gene was studied in mouse tissues and during in vitro differentiation of embryocarcinoma PCC4, mouse neuroblastoma Neuro2A and NB41A3 cells in the presence of retinoic acid (RA) or 1% DMSO. oct-2 mRNA is characterized by a complex pattern and exists in both poly(A)+ and poly(A)- forms. oct-2 mRNA was found in many cell lines, whereas Oct-2 protein was detected only in some of these cells. oct-2 expression also changed during cell differentiation. The cell differentiation is likely to be controlled not only at the gene transcription level, but also at the level of regulation of nuclear transcription factor activity. Such a regulatory mechanism would provide for a finer regulation of cell differentiation.
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Transcription
Transcription is the process of synthesizing RNA from a DNA sequence by RNA polymerase. It is the first step in producing a protein from a gene sequence. Additionally, many other proteins and regulatory sequences are involved in the proper synthesis of messenger RNA (mRNA). Regulation of transcription is responsible for the differentiation of all the different types of cells and often for the proper cellular response to environmental signals.
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Transcription
Transcription Can Produce Different Kinds of RNA Molecules
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