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Updated: May 17, 2025

Design and Use of a Low Cost, Automated Morbidostat for Adaptive Evolution of Bacteria Under Antibiotic Drug Selection

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Published on: September 27, 2016

Spontaneous Cell Detachment from Temperature Gradients: Getting the Method Ready for Antimicrobial Drug Testing at

Csongor Tibor Urbán¹, Soroush Bakhshi Sichani¹, Gabriela Ueda Modaffore^1,2

¹Laboratory for Soft Matter and Biophysics ZMB, Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200 D, B-3001 Leuven, Belgium.

Sensors (Basel, Switzerland)

|May 14, 2025

Summary

This summary is machine-generated.

Spontaneous cell detachment, a method using heated chips, shows dwell time varies with yeast cell properties and drug presence. Fluid convection and chip temperature significantly influence this detachment time.

Keywords:

Amphotericin B S. cerevisiae cell-based biosensors heat-transfer method HTM microfluidic aspect ratio povidone-iodine spontaneous cell detachment temperature gradients

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Published on: September 3, 2014

Area of Science:

Cell Biology
Biophysics
Microfluidics

Background:

Spontaneous cell detachment is a phenomenon where eukaryotic cells detach from a heated surface after a specific dwell time.
This detachment is influenced by temperature gradients and can differentiate cell types and responses to substances.
The method shows potential for pharmacological studies due to its sensitivity to nutrients and cytotoxins.

Purpose of the Study:

To investigate the impact of fluid convection on spontaneous yeast cell detachment.
To analyze how factors like chip temperature, temperature gradient, and cell density affect detachment dwell time.
To validate the spontaneous detachment method for assessing drug effects on yeast cultures.

Main Methods:

Experimental study of yeast cell detachment on a heated chip with a variable aspect ratio sample compartment.
Computational simulations to model fluid convection effects.
Assays to measure the impact of antibiotic and antiseptic drugs on yeast cultures.

Main Results:

Fluid convection and sample compartment geometry influence yeast cell detachment dwell time.
Absolute chip temperature, temperature gradient strength, and cell number are key factors affecting dwell time.
The spontaneous detachment method successfully measured the effects of antibiotic and antiseptic drugs.

Conclusions:

Spontaneous cell detachment is a sensitive method for characterizing cell behavior and responses.
Fluid dynamics and thermal gradients play critical roles in cell detachment kinetics.
This technique offers a valuable tool for drug screening and cell-based assays in pharmacology and microbiology.