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Inhibitory and Activating Effects of Some Flavonoid Derivatives on Human Pyruvate Kinase Isoenzyme M2

Sevki Adem1, Abdulselam Aslan2, Ishtiaq Ahmed3,4

  • 1Department of Chemistry, Faculty of Science, Cankiri Karatekin University, Cankiri, Turkey.

Archiv Der Pharmazie
|December 29, 2015
PubMed

Insights

Flavonoid derivatives were tested for their effects on pyruvate kinase isoenzyme M2 (PKM2), a key enzyme in cancer glucose metabolism. Some derivatives showed significant inhibition or activation, suggesting potential as lead compounds for cancer drug development.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Natural Products Chemistry

Background:

  • Pyruvate kinase isoenzyme M2 (PKM2) is upregulated in various cancers and crucial for glucose metabolism.
  • PKM2 is a promising therapeutic target for anti-cancer drug development.
  • Flavonoids, plant-derived compounds with diverse phenolic structures, possess notable biological activities.

Purpose of the Study:

  • To investigate the in vitro effects of various flavonoid derivatives on pyruvate kinase isoenzyme M2 (PKM2) enzyme activity.
  • To identify flavonoid structures that can modulate PKM2 activity for potential therapeutic applications.

Main Methods:

  • In vitro analysis of PKM2 enzyme activity in the presence of different flavonoid derivatives.
  • Determination of IC50 (inhibition concentration) and AC50 (activation concentration) values for selected compounds.

Main Results:

  • Flavonoid derivatives 1 and 2 exhibited potent PKM2 inhibition with IC50 values below 60 μM.
  • Compounds 3-8 showed varying degrees of PKM2 inhibition, with IC50 values ranging from 134 μM to 3.5 mM.
  • Molecules 9-12 demonstrated PKM2 activation with AC50 values under 90 μM.
  • Derivatives 13-17 displayed PKM2 inhibition, with IC50 values between 115 μM and 275 μM.

Conclusions:

  • Certain flavonoid derivatives effectively inhibit or activate PKM2 enzyme activity in vitro.
  • Catechin derivatives show promise as foundational structures for designing novel PKM2 activators and inhibitors.
  • These findings support the exploration of flavonoids as lead compounds for developing targeted cancer therapies.
Keywords:
CancerEnzyme activationEnzyme inhibitionFlavonoid derivativesPyruvate kinase isoenzyme M2

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