Related Experiment Video
Updated: Jul 11, 2025
Quantification of Cell-Substrate Adhesion Area and Cell Shape Distributions in MCF7 Cell Monolayers
Published on: June 24, 2020
Studying Cellular Focal Adhesion Parameters with Imaging and MATLAB Analysis
Ling-Yea Yu1,2, Ting-Jeng Tseng1, Hsuan-Chao Lin3
1Department of Pharmacology, National Taiwan University College of Medicine, Taipei, Taiwan.
Abstract:
Cell signaling is highly integrated for the process of various cell activities. Although previous studies have shown how individual genes contribute to cell migration, it remains unclear how the integration of these signaling pathways is involved in the modulation of cell migration. In our two-hit migration screen, we revealed that serine-threonine kinase 40 (STK40) and mitogen-activated protein kinase (MAPK) worked synergistically, and the suppression of both genes could further lead to suppression in cell migration. Furthermore, based on our analysis of cellular focal adhesion (FA) parameters using MATLAB analysis, we are able to find out the synergistic reduction of STK40 and MAPK that further abolished the increased FA by shSTK40. While FA identification in previous studies includes image analysis using manual selection, our protocol provides a semi-automatic manual selection of FAs using MATLAB. Here, we provide a method that can shorten the amount of time required for manual identification of FAs and increase the precision for discerning individual FAs for various analyses, such as FA numbers, area, and mean signals.
Insights
Serine-threonine kinase 40 (STK40) and mitogen-activated protein kinase (MAPK) synergistically regulate cell migration. Suppressing both STK40 and MAPK significantly inhibits cell migration and focal adhesion dynamics.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- Cell signaling pathways are crucial for cellular activities, including migration.
- While individual gene roles in cell migration are known, pathway integration remains unclear.
- Understanding synergistic gene effects is key to deciphering complex cellular processes.
Purpose of the Study:
- To investigate the synergistic roles of serine-threonine kinase 40 (STK40) and mitogen-activated protein kinase (MAPK) in cell migration.
- To analyze the impact of STK40 and MAPK on cellular focal adhesion (FA) dynamics.
- To develop an improved, semi-automatic method for FA analysis using MATLAB.
Main Methods:
- A two-hit migration screen was employed to identify interacting genes.
- Gene suppression was achieved using shRNA targeting STK40 and MAPK.
- Cellular focal adhesion parameters were quantified using semi-automatic MATLAB-based image analysis.
Main Results:
- STK40 and MAPK were found to work synergistically to promote cell migration.
- Suppression of both STK40 and MAPK led to a significant decrease in cell migration.
- The synergistic reduction of STK40 and MAPK abolished STK40-induced increases in focal adhesion.
Conclusions:
- STK40 and MAPK signaling pathways are integrated and act synergistically in cell migration.
- A novel, semi-automatic MATLAB protocol enhances the precision and efficiency of focal adhesion analysis.
- This method facilitates deeper insights into cell migration mechanisms and signaling pathway interactions.
