scholarly journals Dual role of the RNA helicase DDX5 in post-transcriptional regulation of myelin basic protein in oligodendrocytes

2018 ◽  
Vol 131 (9) ◽  
pp. jcs204750 ◽  
Author(s):  
Peter Hoch-Kraft ◽  
Robin White ◽  
Stefan Tenzer ◽  
Eva-Maria Krämer-Albers ◽  
Jacqueline Trotter ◽  
...  
1989 ◽  
Vol 86 (17) ◽  
pp. 6807-6811 ◽  
Author(s):  
S Kumar ◽  
R Cole ◽  
F Chiappelli ◽  
J de Vellis

During neonatal development glucocorticoids potentiate oligodendrocyte differentiation and myelinogenesis by regulating the expression of myelin basic protein, proteolipid protein, and glycerol phosphate dehydrogenase (sn-glycerol-3-phosphate: NAD+ 2-oxidoreductase, EC 1.1.1.8). The actual locus at which hydrocortisone exerts its developmental influence on glial physiology is, however, not well understood. Glycerol phosphate dehydrogenase is glucocorticoid-inducible in oligodendrocytes at all stages of development both in vivo and in vitro. In newborn rat cerebral cultures, between 9 and 15 days in vitro, a 2- to 3-fold increase in myelin basic protein and proteolipid protein mRNA levels occurs in oligodendrocytes within 12 hr of hydrocortisone treatment. Immunostaining demonstrates that this increase in mRNAs is followed by a 2- to 3-fold increase in the protein levels within 24 hr. In vitro transcription assays performed with oligodendrocyte nuclei show an 11-fold increase in the transcriptional activity of glycerol phosphate dehydrogenase in response to hydrocortisone but no increase in transcription of myelin basic protein or proteolipid protein. These results indicate that during early myelinogenesis, glucocorticoids influence the expression of key oligodendroglial markers by different processes: The expression of glycerol phosphate dehydrogenase is regulated at the transcriptional level, whereas the expression of myelin basic protein and proteolipid protein is modulated via a different, yet uncharacterized, mechanism involving post-transcriptional regulation.


Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 466
Author(s):  
Marie-Christine Carpentier ◽  
Cécile Bousquet-Antonelli ◽  
Rémy Merret

The recent development of high-throughput technologies based on RNA sequencing has allowed a better description of the role of post-transcriptional regulation in gene expression. In particular, the development of degradome approaches based on the capture of 5′monophosphate decay intermediates allows the discovery of a new decay pathway called co-translational mRNA decay. Thanks to these approaches, ribosome dynamics could now be revealed by analysis of 5′P reads accumulation. However, library preparation could be difficult to set-up for non-specialists. Here, we present a fast and efficient 5′P degradome library preparation for Arabidopsis samples. Our protocol was designed without commercial kit and gel purification and can be easily done in one working day. We demonstrated the robustness and the reproducibility of our protocol. Finally, we present the bioinformatic reads-outs necessary to assess library quality control.


2017 ◽  
Vol 29 (4) ◽  
pp. 791-807 ◽  
Author(s):  
Weronika Sura ◽  
Michał Kabza ◽  
Wojciech M. Karlowski ◽  
Tomasz Bieluszewski ◽  
Marta Kus-Slowinska ◽  
...  

2002 ◽  
Vol 277 (31) ◽  
pp. 27903-27911 ◽  
Author(s):  
Vasudevan Seshadri ◽  
Paul L. Fox ◽  
Chinmay K. Mukhopadhyay

1990 ◽  
Vol 7 (1) ◽  
pp. 32-40 ◽  
Author(s):  
Gladys E. Deibler ◽  
Audrey L. Stone ◽  
Marian W. Kies

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