Selective Patterns of Expression of G Protein α Subunits During In Vitro Development of Hypothalamic Neurons
2002
: Expression of different α subunits of G proteins was studied in hypothalamic primary cultures grown in defined medium and enriched in either neurons or glial (astrocyte) cells. In parallel, the cellular distribution of Gi, Gs, and GoA subunits was visualized by in situ hybridization. Immunoblots using specific antisera and hybridization of mRNAs with specific oligonucleotide probes allowed us to characterize Gs, Gi2, and GoA as major neuronal G proteins in the hypothalamus, whereas the glial cells expressed mostly Gs, Gi2, and GoB forms. Gi was found to be expressed very early and transiently in the culture, whereas expression of Gs and GoA increased regularly with time.
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