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Intracellular Signaling Affects Focal Adhesions

Intracellular Signaling Affects Focal Adhesions

Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
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Related Experiment Video

Updated: Jul 11, 2025

Quantification of Cell-Substrate Adhesion Area and Cell Shape Distributions in MCF7 Cell Monolayers

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 Yu^1,2, Ting-Jeng Tseng¹, Hsuan-Chao Lin³

¹Department of Pharmacology, National Taiwan University College of Medicine, Taipei, Taiwan.

|November 16, 2023

Summary

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.

Keywords:

Cell signaling FA selection Focal adhesion (FA)Mean signal Mitogen-activated protein kinase (MAPK)Segmentation Serine-threonine kinase 40 (STK40)Thresholding

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Integrative Toolkit to Analyze Cellular Signals: Forces, Motion, Morphology, and Fluorescence

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Last Updated: Jul 11, 2025

Quantification of Cell-Substrate Adhesion Area and Cell Shape Distributions in MCF7 Cell Monolayers

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Published on: June 24, 2020

Examining the Dynamics of Cellular Adhesion and Spreading of Epithelial Cells on Fibronectin During Oxidative Stress

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Published on: October 13, 2019

Integrative Toolkit to Analyze Cellular Signals: Forces, Motion, Morphology, and Fluorescence

Integrative Toolkit to Analyze Cellular Signals: Forces, Motion, Morphology, and Fluorescence

Published on: March 5, 2022

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.