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Temporal Quantification of MAPK Induced Expression in Single Yeast Cells
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Single yeast cell nanomotions correlate with cellular activity.

Ronnie G Willaert1,2,3,4, Pieterjan Vanden Boer1,2,3, Anton Malovichko1,5

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Living yeast cells exhibit unique nanomotion linked to their metabolic activity. This cellular motion, measurable with optical microscopy, could aid in developing antifungal susceptibility tests.

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Area of Science:

  • Cellular biology
  • Biophysics

Background:

  • Living single yeast cells display distinct cellular motion at the nanometer scale.
  • This nanomotion's magnitude correlates with cellular activity.

Purpose of the Study:

  • To characterize the nanomotion patterns of nonattached single yeast cells.
  • To investigate the relationship between cellular metabolic state and nanomotion.

Main Methods:

  • Utilized classical optical microscopy to observe and analyze cellular nanomotion.
  • Examined the distribution and frequency patterns of cellular displacements.

Main Results:

  • Cellular nanomotion displacement distributions differ significantly from random motion.
  • Nanomotion patterns vary substantially based on the cell's metabolic state.
  • Single living yeast cells exhibit oscillations around 2 hertz.

Conclusions:

  • Cellular nanomotion is a sensitive indicator of yeast cell metabolic state.
  • The described technique offers a simple method for analyzing cellular activity.
  • Potential applications include rapid antifungal susceptibility testing.