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ERK/MAPK Signalling Pathway Regulates MMP2 through ETS1 in Renal Clear Cell Carcinoma
Hai-Bin Chen1,2, Wei Li1, Zhan Yang1
1Department of Urology, the Second Hospital of Hebei Medical University, Shijiazhuang, 050061, China.
Background:
The c-ETS-1 (ETS1) expression is high in clear cell renal cell carcinoma (ccRCC) tissues; however, how it impacts ccRCC is currently unknown.
Methods:
The online STRING web source was used to construct a protein network interacting with ETS1. The Cell Counting Kit-8 was used to detect the cell viability. A clonogenic assay, a wound-healing assay, and a Transwell assay were used to detect cell proliferation, invasion and migration abilities. Western blot was used to detect the expression of proteins.
Results:
The data showed the expression of ETS1 in ccRCC tissues to be significantly increased compared to adjacent tissues (p<0.05). The positive expression of ETS1 in ccRCC patients aged 20-100 was statistically significant compared to adjacent normal tissues (p<0.05). The grade of ETS1 positive expression (1-4) and lymph node metastasis (N1) in ccRCC were significantly higher than those in adjacent normal tissues (p<0.05). The tumour stage (stages 1-4) in ccRCC patients with positive ETS1 expression was significantly higher than that in adjacent normal tissues (p<0.05). Knockdown of ETS1 and PERK inhibitors significantly inhibited the proliferation, migration and invasion of ccRCC cells. Knockdown of ETS1 inhibited MMP-2 expression, and an extracellular signal-related kinase (ERK) inhibitor inhibited both ETS1 and MMP-2 expression.
Conclusion:
A high expression of ETS1 is associated with the progression of ccRCC. This study suggests that ETS1 promotes proliferation by increasing MMP2 expression in ccRCC, and combined knockdown of ETS1 and inhibition of ERK can significantly inhibit the proliferation, migration and invasion of ccRCC. ETS1 may be a therapeutic and prognostic target for renal cell carcinoma.
Insights
High ETS1 expression correlates with clear cell renal cell carcinoma (ccRCC) progression. Targeting ETS1 and ERK may inhibit ccRCC cell proliferation, migration, and invasion, suggesting ETS1 as a therapeutic target.
Area of Science:
- Oncology
- Molecular Biology
- Cancer Research
Background:
- ETS1 expression is elevated in clear cell renal cell carcinoma (ccRCC) tissues.
- The precise role of ETS1 in ccRCC pathogenesis remains unclear.
Purpose of the Study:
- To investigate the association between ETS1 expression and ccRCC progression.
- To elucidate the functional role of ETS1 in ccRCC cell proliferation, migration, and invasion.
Main Methods:
- Protein-protein interaction network analysis using STRING.
- Cell viability, proliferation, migration, and invasion assays (CCK-8, clonogenic, wound-healing, Transwell).
- Western blot analysis for protein expression; PERK and ERK pathway inhibitors were utilized.
Main Results:
- Significantly increased ETS1 expression in ccRCC tissues and its correlation with advanced tumor stage, lymph node metastasis, and higher grades (p<0.05).
- ETS1 knockdown and PERK inhibition suppressed ccRCC cell proliferation, migration, and invasion.
- ETS1 knockdown reduced MMP-2 expression; ERK inhibition affected both ETS1 and MMP-2 expression.
Conclusions:
- Elevated ETS1 expression is linked to ccRCC progression.
- ETS1 promotes ccRCC proliferation via MMP2 upregulation.
- Combined ETS1 knockdown and ERK inhibition show therapeutic potential for ccRCC.
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