pattern of expression of chick delta-crystallin genes in lens differentiation and in trans-differentiating cultured tissues

During development of the vertebrate lens, the lens epithelium undergoes a final stage of differentiation into lens fibre cells. Lens fibre cells can also be produced by trans‐differentiation from certain extralenticular structures, all of which are of different developmental origin from lens, inclu...

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Bibliographic Details
Published in:The EMBO journal 1983-01, Vol.2 (3), p.333-338
Main Authors: Bower, D.J, Errington, L.H, Pollock, B.J, Morris, S, Clayton, R.M
Format: Article
Language:English
Subjects:
animal breeding
animal genetics
animal physiology
Animals
Cell Differentiation
Cell Nucleus - metabolism
Chick Embryo
Crystallins - genetics
Culture Techniques
Cytoplasm - metabolism
Gene Expression
Gene Expression Profiling
In Situ Hybridization
Lens, Crystalline - cytology
Lens, Crystalline - metabolism
RNA, Messenger - metabolism
Time Factors
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Summary:During development of the vertebrate lens, the lens epithelium undergoes a final stage of differentiation into lens fibre cells. Lens fibre cells can also be produced by trans‐differentiation from certain extralenticular structures, all of which are of different developmental origin from lens, including embryonic neural retina and retinal pigmented epithelium. Delta‐crystallin is the major lens protein in the chick and appears first in development; it is the major product in trans‐differentiated retina of younger embryos. In both normal differentiation and trans‐differentiation an increase of delta‐crystallin coding RNA is detectable in the nucleus of cells prior to their terminal differentiation into lens fibres. The increase in transcription of delta‐crystallin genes accompanying final differentiation of lens fibres, appears to take place slightly in advance of an increase in the capacity to process and transport this mRNA to the cytoplasm.
ISSN:0261-4189
1460-2075
DOI:10.1002/j.1460-2075.1983.tb01427.x