Mitosis and thermosensitive mutants in yeast

An exemple using fast temperature controller  for S. pombe dynamic cell cycle control

During S. pombe division, the CDC25 protein is required for mitosis completion. At 25°C the CDC25 protein is functional (Fig. 1a) but over 37°C it becomes non-functional or inactivated (Fig. 1b). Such a mutant is called “thermosensitive” and as mitosis only occurs at 25°C, this temperature is termed “permissive”. In these experiments, we used the ElveflowTemp precise temperature control, yet hitherto impossible to achieve, to impact S. pombe physiology during cell division.

Need advice to control yeast mitosis using temperature ?

Feel free to contact us at:

contact@elveflow.com

Ask me your question

(We will answer within 24 hours)





Email (Mandatory)

Your needs

ElveflowTemp induced cell cycle phenotype

Fig 2: CDC25 ts S. pombe reversible control of mitosis arrest by ElveflowTemp Yeast division occurs normally at 25°C (a) but is suddenly stopped when temperature is quickly shifted to 37°C (b). Mitosis only restarts when temperature is set back to 25°C (c, d, e, f)

During our experimentation, S. pombe thermosensitive mutants (CDC25 ts) were examined under the microscope with a ElveflowTemp platform. This system allowed to selectively modify the temperature of yeast samples between 25°C and 37°C resulting in a reversible arrest of mitosis.

.

.

Need an accurate heater-cooler system to control yeast mitosis ?

DSC01724-web

The world fastest heater cooler for live cell imaging

> Follow in real time the temperature of your cell

> Change temperature of your cell in seconds

> Install it in 10 minute on any microscope

Need a fast drugs switch system for your yeast studies ?

microfluidic-perfusion-pack

Switch medium in seconds during live cell imaging

> Stable & pulseless flow rate

Switch between 10 differents medium

> Instantaneous stop flow

 

.

This application note refers to:

G. Velve Casquillas, C. Fu, M Le Berre, J. Cramer, S. Meance, A. Plecis, D. Baigl, JJ. Greffet, Y. Chen, M. Piel and PT. Tran Fast microfluidic temperature control for high resolution live cell imaging, Lab on a chip 2010