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Updated: Feb 27, 2026

Author Spotlight: Standardizing Spheroid Formation Methods for Metabolic and Oxygenation Analysis Using Fluorescence Lifetime Imaging Microscopy
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Sensing NADH conformation using phasor analysis on fluorescence spectra.

Dylan Palo1, Jeff Maltas1, Laxmi Risal1

  • 1Department of Physics, Miami University, Oxford, OH 45056, USA.

Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
|June 25, 2017
PubMed
Summary
This summary is machine-generated.

Phasor analysis of fluorescence spectrum shape provides quantitative conformational information. This method effectively monitors metabolic transitions and interprets cellular NADH autofluorescence, offering insights into biological systems.

Keywords:
AutofluorescenceFluorescenceMolecular conformationProtein bindingSolvent denaturationSpectral phasor analysis

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Area of Science:

  • Biophysics
  • Biochemistry
  • Spectroscopy

Background:

  • Phasor analysis is a sensitive method for multicomponent systems.
  • Spectral phasor analysis aids in identifying regions during biological spectral imaging.

Purpose of the Study:

  • To demonstrate quantitative conformational information from fluorescence spectrum shape using phasor analysis.
  • To apply phasor analysis for monitoring metabolic transitions via autofluorescence.

Main Methods:

  • Utilized methanol denaturation of NADH and NADH binding to dehydrogenase proteins as model systems.
  • Performed spectral phasor analysis on fluorescence spectrum shape.
  • Quantitatively monitored UV-excited autofluorescence spectrum shape during metabolic changes.

Main Results:

  • Obtained quantitative conformational data from phasor analysis of fluorescence spectra.
  • Calculated thermodynamic constants for model reactions, comparing them to previous studies.
  • Interpreted cellular autofluorescence in terms of NADH-utilizing pathways and two-state behavior.

Conclusions:

  • Phasor analysis of fluorescence spectrum shape is a valuable tool for quantitative conformational analysis.
  • This technique can assess two-state systems and interpret cellular autofluorescence from NADH.
  • Spectral phasor analysis offers insights into metabolic pathways and cellular states.