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Quantifying pH in Malaria Using pHluorin and Flow Cytometry.

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|May 4, 2023
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Summary

This study introduces a new method to measure intracellular pH (pHi) in Plasmodium falciparum parasites using flow cytometry and a fluorescent protein. This technique allows for precise monitoring of pHi crucial for parasite biology.

Keywords:
AcidificationAlkalizationFlow cytometryFluorescenceGreen fluorescent proteinIntracellular pHPlasmodiumpH quantificationpHluorin2

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Area of Science:

  • Cell Biology
  • Parasitology
  • Biochemistry

Background:

  • Intracellular pH (pHi) is vital for cellular functions, affecting enzymes, ion channels, and transporters.
  • Maintaining specific pH ranges is essential for optimal biological processes within cells.
  • Accurate measurement of pHi is crucial for understanding cellular regulation.

Purpose of the Study:

  • To establish a protocol for measuring cytosolic pHi in Plasmodium falciparum blood-stage parasites.
  • To utilize flow cytometry and the pHluorin2 fluorescent protein for pHi quantification.

Main Methods:

  • Genomic integration of the pHluorin2 fluorescent protein into Plasmodium falciparum.
  • Application of flow cytometry for measuring pHi in parasite cytosol.
  • Development of a standardized protocol for pHi measurement in live parasites.

Main Results:

  • Successfully implemented a flow cytometry-based protocol for pHi measurement.
  • Demonstrated the utility of pHluorin2 for monitoring pHi dynamics in Plasmodium falciparum.
  • Provided a reliable method for quantifying pHi in a key parasitic pathogen.

Conclusions:

  • The developed protocol offers a robust method for assessing pHi in Plasmodium falciparum.
  • This technique facilitates further research into the role of pHi in parasite physiology and drug development.
  • Flow cytometry with pHluorin2 is a valuable tool for studying intracellular pH in parasitic organisms.