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| Content Provider | Springer Nature Link |
|---|---|
| Author | Penrad Mobayed, May Perrin, Caroline Lepesant, Jean Antoine |
| Copyright Year | 2012 |
| Abstract | Subterminal lampbrush loops of one of the 12 bivalents of the oocyte karyotype of Pleurodeles waltl (Amphibian, Urodele) underwent prominent morphological changes upon in vitro culture. These loops exhibited a fine ribonucleoprotein (RNP) granular matrix, which evolved during culture into huge structures that we have named ‘chaussons’ (slippers). This phenomenon involved progressive accumulation of proteins in the RNP matrix without protein neosynthesis. One of these proteins, which translocated into the nucleus during the culture, was identified as a homolog of the human Ro52 E3 ubiquitin ligase. RNA polymerase III was also found to accumulate on the same loops. These results suggest that the subterminal loops of bivalent XII act as a storage site for the components of a nuclear machinery involved in the quality control of RNA synthesis and maturation in response to cellular stress. They also emphasise the considerable value of the lampbrush chromosome system for a direct visualisation of modifications in gene expression and open the question of a nuclear accumulation of Ro52 in human or animal oocytes cultured in vitro for assisted reproductive technologies (ART). |
| Starting Page | 1033 |
| Ending Page | 1044 |
| Page Count | 12 |
| File Format | |
| ISSN | 09673849 |
| Journal | Chromosome Research |
| Volume Number | 20 |
| Issue Number | 8 |
| e-ISSN | 15736849 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2012-11-14 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Amphibian Pleurodeles waltl oocyte lampbrush chromosomes Ro52/TRIM21 RNA pol III Cell Biology Human Genetics Animal Genetics and Genomics Plant Genetics & Genomics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics |
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