Projects per year
Abstract
The mRNA cap recruits factors essential for transcript processing and translation initiation. We report that regulated mRNA cap methylation is a feature of embryonic stem cell (ESC) differentiation. Expression of the mRNA cap methyltransferase activating subunit RAM is elevated in ESCs, resulting in high levels of mRNA cap methylation and expression of a cohort of pluripotency-associated genes. During neural differentiation, RAM is suppressed, resulting in repression of pluripotency-associated factors and expression of a cohort of neural-associated genes. An established requirement of differentiation is increased ERK1/2 activity, which suppresses pluripotency-associated genes. During differentiation, ERK1/2 phosphorylates RAM serine-36, targeting it for ubiquitination and proteasomal degradation, ultimately resulting in changes in gene expression associated with loss of pluripotency. Elevated RAM expression also increases the efficiency of fibroblast reprogramming. Thus, the mRNA cap emerges as a dynamic mark that instructs change in gene expression profiles during differentiation and reprogramming.
Original language | English |
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Pages (from-to) | 1352-1365 |
Number of pages | 14 |
Journal | Cell Reports |
Volume | 16 |
Issue number | 5 |
Early online date | 21 Jul 2016 |
DOIs | |
Publication status | Published - 2 Aug 2016 |
Fingerprint
Dive into the research topics of 'mRNA Cap methylation in pluripotency and differentiation'. Together they form a unique fingerprint.Projects
- 2 Finished
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Investigating MRNA Methyl Cap Regulation, Function and Therapeutic Potential (Senior Non-Clinical Fellowship)
Cowling, V. (Investigator)
1/01/14 → 31/12/21
Project: Research
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Aref#d: 19352. The Mechanism of Myc function in cell proliferation and cancer (Career Development Fellowship)
Cowling, V. (Investigator)
3/12/07 → 2/01/14
Project: Research
Student theses
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Investigating the role and regulation of mRNA capping in pluripotency and differentiation
Suska, O. (Author), Cowling, V. (Supervisor), 2017Student thesis: Doctoral Thesis › Doctor of Philosophy
Profiles
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Cowling, Victoria
- Molecular Cell and Developmental Biology - Associate Staff of Biology
Person: Associate Staff