Quantifying intracellular dynamics using fluorescence fluctuation spectroscopy

Protoplasma. 2014 Mar;251(2):307-16. doi: 10.1007/s00709-013-0602-z. Epub 2014 Jan 14.


Originally developed for the field of physical chemistry, fluorescence fluctuation spectroscopy (FFS) has evolved to a family of methods to quantify concentrations, diffusion rates and interactions of fluorescently labelled molecules. The possibility to measure at the nanomolar concentration level and to combine these techniques with microscopy allow to study biological processes with high sensitivity in the living cell. In this review, the basic principles, challenges and recent developments of the most common FFS methods are being discussed and illustrated by intracellular applications.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Animals
  • Biotechnology / instrumentation
  • Biotechnology / methods
  • Humans
  • Nanotechnology / instrumentation
  • Nanotechnology / methods
  • Spectrometry, Fluorescence / instrumentation
  • Spectrometry, Fluorescence / methods*