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PKM2: A Metabolic Switch Master Regulating Cancer Cell Fate and Energy Metabolism

Endocrinology Diagnostics

Key points about PKM2:

Structure: Pyruvate kinase isoform with tetrameric and dimeric forms, regulated by alternative splicing and post-translational modifications.

Metabolic Role: Converts phosphoenolpyruvate to pyruvate during glycolysis, supporting the Warburg effect in cancer cells.

Cellular Functions:

  • Metabolic bottleneck creation
  • Redirects glycolytic intermediates for cell growth
  • Supports rapid cell division

Nuclear Functions:

  • Protein kinase and transcriptional coactivator
  • Interacts with HIF-1α
  • Modifies histone H3
  • Influences gene expression

Cancer Significance:

  • Preferentially expressed in cancer cells
  • Contributes to tumor growth and survival
  • Maintains cellular redox balance
  • Potential therapeutic target

Research Approaches:

  • Exploring PKM2 tetramer activators
  • Developing inhibitors
  • Investigating as potential diagnostic biomarker

Challenges: Complex protein functions complicate targeted therapy development.

ENQUIRY FORM

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