Related Experiment Video
Updated: May 24, 2026

10:36
Measurements of Physiological Stress Responses in C. Elegans
Published on: May 21, 2020
Transcription factor regulation by mechanical stress
Melissa G Mendez1, Paul A Janmey
1University of Pennsylvania, 3340 Smith Walk, Philadelphia, PA 19103, United States.
The International Journal of Biochemistry & Cell Biology
|March 6, 2012
Summary
Cellular responses to mechanical forces are increasingly understood, with physical stimuli modulating key transcription factors like YAP and NF-κB, impacting cell behavior.
Area of Science:
- Biophysics
- Cell Biology
- Mechanobiology
Background:
- Emerging technologies and increased interest in cell mechanics are driving novel discoveries.
- Mechanical forces significantly influence biological structure and cellular function.
- Physical stimuli are transduced into intracellular signals affecting cell behavior.
Purpose of the Study:
- To review recent findings on how physical stimuli modulate cell function and structure.
- To highlight the role of mechanical forces in signal transduction pathways.
- To summarize the impact of physical stimuli on transcription factor activity.
Main Methods:
- Literature review of recent studies in cell mechanics and mechanotransduction.
- Analysis of research demonstrating physical stimuli affecting cellular processes.
- Identification of key transcription factors modulated by mechanical forces.
Main Results:
- Physical stimuli alter cell structure and function through various transduction mechanisms.
- Cellular responses to mechanical forces occur at multiple biological levels.
- Specific transcription factors, including armadillo/β-catenin, serum response factor (SRF), yes-associated protein (YAP), and nuclear factor κB (NF-κB), are modulated by physical stimuli.
Conclusions:
- Mechanical forces play a critical role in regulating cellular activities.
- Understanding mechanotransduction pathways is key to deciphering cell behavior.
- Physical stimuli directly influence gene expression via transcription factor modulation.
Related Concept Videos
Other Stress Responses in Bacteria
Bacteria have global regulatory systems that control several types of stress mechanisms. These include Pho regulon and the heat shock response, which are essential systems for environmental adaptation, such as nutrient limitation and proteotoxic stress. The Pho regulon and the heat shock response exemplify bacterial resilience, enabling rapid adaptation to fluctuating environmental conditions.Pho RegulonBacteria require phosphorus for essential cellular processes, including nucleic acid...
Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription Factors
Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Transcription Elongation Factors
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
Transcription Elongation Factors
Transcription elongation is a dynamic process that alters depending upon the sequence heterogeneity of the DNA being transcribed. Hence, it is not surprising that the elongation complex's composition also varies along the way while transcribing a gene.
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
The transcription elongation is regulated via pausing of RNA polymerase on several occasions during transcription. In bacteria, these halts are necessary because the transcription of DNA into mRNA is coupled to the translation of that mRNA into a...
Master Transcription Regulators
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...

