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Cell Lines

Cell Lines

A cell line is a population of cells grown in vitro that can be subcultured over several generations. Normal cells cease to divide after a certain number of cell divisions, a process known as replicative senescence. This number, called the Hayflick limit, was conceptualized by Leonard Hayflick in 1961 when he observed that fetal cells grown in culture could only divide 40-60 times. This limit is due to the shortening of the telomeres during each round of cell division, preventing cell division...

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Trusting the forces of our cell lines.

Marina Moro-López¹, Ramon Farré², Jorge Otero³

¹Unit of Biophysics and Bioengineering, School of Medicine and Health Sciences, University of Barcelona, Barcelona, Spain.

Cells & Development

|June 9, 2024

Summary

Cells cultured in vitro change their mechanobiology due to artificial environments. Understanding this cellular adaptation is key to improving the accuracy of biomedical research.

Keywords:

Adhesion reinforcement Cytoskeleton Mechanical memory Mechanobiology Tissue culture plastic polystyrene (TCPS)Traction force microscopy

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Area of Science:

Cell biology
Mechanobiology
Biomedical research

Background:

Cells in vitro experience different selection pressures than in vivo.
These pressures alter cell behavior, genome, and force generation.
Conventional cell culture on polystyrene impacts cellular mechanobiology.

Purpose of the Study:

To highlight the distinct mechanobiology of cells cultured on polystyrene versus in vivo.
To investigate the role of adhesion reinforcement in cellular transformation.
To explore strategies for mitigating in vitro culture effects on cell mechanics.

Main Methods:

Review of existing evidence on cellular mechanobiology in vitro and in vivo.
Analysis of the concept of 'mechanical memory' in cell adaptation.
Proposal of novel culture protocols like organoid-inspired methods and mechanical priming.

Main Results:

Cells on polystyrene exhibit altered mechanobiology compared to their in vivo state.
Adhesion reinforcement plays a significant role in this cellular transformation.
Cellular mechanoadaptation can be viewed as a form of mechanical memory.

Conclusions:

In vitro culture profoundly transforms cellular mechanobiology.
Strategies like organoid-inspired protocols and mechanical priming can mitigate these effects.
Controlling in vitro cellular forces is crucial for enhancing the validity of biomedical research.