A choice between glycogen and δ-crystallin accumulation is made in glial cells and not influenced by overlying neurons
| Autor: | Saleh Al Karim, D. I. de Pomerai |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Cellular differentiation
Population Chick Embryo Biology Biochemistry Retina chemistry.chemical_compound medicine Animals education Molecular Biology Cells Cultured Neurons education.field_of_study Glycogen Histocytochemistry Transdifferentiation Cell Differentiation Cell Biology Crystallins Culture Media Cell biology Glucose medicine.anatomical_structure chemistry Cell culture Neuroglia Neuron Research Article |
| Zdroj: | Biochemical Journal. 285:79-83 |
| ISSN: | 1470-8728 0264-6021 |
| DOI: | 10.1042/bj2850079 |
| Popis: | Chick-embryo neuroretinal cells convert extensively into lens under low-glucose conditions, but this transdifferentiation process is blocked by high-glucose media. We have previously observed an inverse relationship between the levels of glycogen (a marker of normal retinoglial differentiation) and of delta-crystallin (a lens marker) in such cultures. However, most of the glycogen accumulated under high-glucose conditions is apparently localized in those glial (G) cells underlying clusters of neurons (N cells). We here show that glial-enriched cultures (largely depleted of N cells) both accumulate glycogen and fail to transdifferentiate in high-glucose media. Moreover, glycogen localization in groups of glial cells is unaffected by the absence of N cells. Thus the choice between normal and foreign differentiation pathways is made autonomously within the retinoglial-cell population and is not influenced significantly by the presence or absence of N cells. |
| Databáze: | OpenAIRE |
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