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Updated: Mar 24, 2026
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Published on: July 9, 2019
RNA sequencing analysis to demonstrate Erk dependent and independent functions of Mek
Chang Liu1, Haixia Chen1, Lin Liu1
1State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center for Biotherapy, 2011 Collaborative Innovation Center of Tianjin for Medical Epigenetics, Tianjin Key Laboratory of Protein Sciences and College of Life Sciences, Nankai University, Tianjin 300071, China.
Abstract:
Mek inhibition and Erk knockout (KO) have quite distinct effects on pluripotency maintenance in mouse embryonic stem cells (ESCs). To test whether there is an Erk-independent function of Mek, RNA-sequencing (RNA-seq) is carried out on six samples, WT KH2 ESCs treated with or without PD0325901 (PD) for 48 h (KH2_PD and KH2, respectively), iErk1; Erk KO ESCs cultured in the presence of Dox (P0), 48 and 96 h after Dox withdrawal (P1 and P2, respectively), and iErk1; Erk KO ESCs cultured without Dox for 96 h, and treated with PD in the last 48 h (P2_PD). These RNA-seq data demonstrate that Mek inhibition has quite different effect on the transcriptional profile of mouse ESCs, compared to Erk KO. Moreover, a significant fraction of genes is regulated by Mek inhibition, regardless of the presence or absence of Erk, indicating an Erk-independent function of Mek. RNA-seq data are deposited in Gene Expression Omnibus (GEO) datasets under accession number GSE70304.
Insights
Mek inhibition and Erk knockout have different effects on mouse stem cell pluripotency. Mek inhibition regulates genes independently of Erk, revealing a distinct Mek function in embryonic stem cells (ESCs).
Area of Science:
- Cell Biology
- Molecular Biology
- Genomics
Background:
- Pluripotency maintenance in mouse embryonic stem cells (ESCs) is crucial for development.
- Mitogen-activated protein kinase (Mek) and Extracellular signal-regulated kinase (Erk) pathways play key roles in ESC regulation.
- Distinct effects of Mek inhibition versus Erk knockout suggest complex pathway interactions.
Purpose of the Study:
- To investigate the Erk-independent functions of Mek in mouse ESCs.
- To compare the transcriptional effects of Mek inhibition with Erk knockout.
- To elucidate the role of Mek in pluripotency maintenance.
Main Methods:
- RNA-sequencing (RNA-seq) was performed on six distinct mouse ESC samples.
- Samples included wild-type (WT) ESCs with and without Mek inhibition (PD0325901).
- Erk knockout (KO) ESCs were analyzed under various conditions, including Dox presence/withdrawal and Mek inhibition.
Main Results:
- Mek inhibition significantly altered the transcriptional profile of mouse ESCs differently compared to Erk KO.
- A substantial number of genes were found to be regulated by Mek inhibition irrespective of Erk presence.
- These findings indicate a functional role for Mek independent of Erk signaling.
Conclusions:
- Mek possesses functions in mouse ESCs that operate independently of Erk.
- The distinct transcriptional changes highlight the complex regulation of pluripotency by the Mek-Erk pathway.
- RNA-seq data provide valuable insights into Mek-Erk signaling in stem cell biology.
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