Related Experiment Video
Updated: Jan 30, 2026
09:40
In Vivo Detection and Analysis of Rb Protein SUMOylation in Human Cells
Published on: November 2, 2017
7.7K
MORC2 regulates C/EBPα-mediated cell differentiation via sumoylation
Jia Liu1, Qing Zhang1, Banlai Ruan1
1Department of Cell Biology, Key Laboratory of Cell Biology, Ministry of Public Health and Key Laboratory of Medical Cell Biology, Ministry of Education, China Medical University, Shenyang, 110122, China.
Cell Death and Differentiation
|January 16, 2019
Summary
MORC2 protein promotes cancer by inhibiting C/EBPα differentiation. It enhances C/EBPα sumoylation and degradation, leading to cell proliferation and poor gastric cancer survival.
Area of Science:
- Cellular biology
- Molecular oncology
- Cancer research
Background:
- CCAAT/enhancer-binding protein α (C/EBPα) sumoylation is crucial for cell differentiation versus proliferation.
- The role of C/EBPα in cancer and its regulation by MORC2 remain unclear.
Purpose of the Study:
- To investigate the interaction between MORC2 and C/EBPα.
- To elucidate the mechanism by which MORC2 influences C/EBPα activity and stability.
- To determine the clinical significance of MORC2 and C/EBPα in gastric cancer.
Main Methods:
- Co-immunoprecipitation assays to detect MORC2-C/EBPα interaction.
- Western blotting to assess protein levels and sumoylation status.
- Cell differentiation assays in C2C12 cells.
- Analysis of clinical gastric cancer tissues for MORC2 and C/EBPα expression correlation.
Main Results:
- MORC2 directly interacts with the TE-III domain of C/EBPα.
- MORC2 overexpression promotes C/EBPα sumoylation and degradation, inhibiting C2C12 cell differentiation.
- Decreased C/EBPα and increased MORC2 expression correlate with poor differentiation in gastric cancer.
- High MORC2 expression is linked to aggressive gastric cancer phenotypes and reduced patient survival.
Conclusions:
- MORC2 regulates the C/EBPα-mediated differentiation/proliferation balance through sumoylation.
- MORC2 affects C/EBPα protein stability, promoting cell proliferation and tumorigenesis.
- MORC2 represents a potential therapeutic target in gastric cancer.
Related Concept Videos
02:23Master Transcription Regulators
7.8K
Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
7.8K
01:28pH Regulation in Cells
7.6K
pH plays a critical role in maintaining normal cellular activities. It helps maintain the structure and function of various proteins, dictates the charge on cellular membranes, and is crucial for metabolic reactions inside the cell. Moreover, cells use the energy from the proton motive force to generate ATP.
Cytosolic pH
Under physiological conditions, the cytosolic pH is slightly more acidic than the extracellular pH. However, cells must prevent further acidification of their cytosol to...
Cytosolic pH
Under physiological conditions, the cytosolic pH is slightly more acidic than the extracellular pH. However, cells must prevent further acidification of their cytosol to...
7.6K
02:24Regulation of Expression Occurs at Multiple Steps
26.4K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
26.4K
02:58Regulated Protein Degradation
8.8K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.8K
01:46Epigenetic Regulation
33.7K
Epigenetic mechanisms play an essential role in healthy development. Conversely, precisely regulated epigenetic mechanisms are disrupted in diseases like cancer.
33.7K
01:22iPS Cell Differentiation
3.1K
The ability of induced pluripotent stem cells or iPSCs to differentiate into most body cell types has stimulated repair and regenerative medicine research over the past few decades. iPSC-derived blood cells, hepatocytes, beta islet cells, cardiomyocytes, neurons, and other cell types can repair injuries or regenerate damaged tissue in diseases such as diabetes and neurodegenerative disorders.
3.1K