Methionine oxidation activates pyruvate kinase M2 to promote pancreatic cancer metastasis

Mol Cell. 2022 Aug 18;82(16):3045-3060.e11. doi: 10.1016/j.molcel.2022.06.005. Epub 2022 Jun 24.

Abstract

Cancer mortality is primarily a consequence of its metastatic spread. Here, we report that methionine sulfoxide reductase A (MSRA), which can reduce oxidized methionine residues, acts as a suppressor of pancreatic ductal adenocarcinoma (PDA) metastasis. MSRA expression is decreased in the metastatic tumors of PDA patients, whereas MSRA loss in primary PDA cells promotes migration and invasion. Chemoproteomic profiling of pancreatic organoids revealed that MSRA loss results in the selective oxidation of a methionine residue (M239) in pyruvate kinase M2 (PKM2). Moreover, M239 oxidation sustains PKM2 in an active tetrameric state to promote respiration, migration, and metastasis, whereas pharmacological activation of PKM2 increases cell migration and metastasis in vivo. These results demonstrate that methionine residues can act as reversible redox switches governing distinct signaling outcomes and that the MSRA-PKM2 axis serves as a regulatory nexus between redox biology and cancer metabolism to control tumor metastasis.

Keywords: PKM2; cancer metabolism; glucose oxidation; metastasis; methionine oxidation; pancreatic cancer; redox signaling.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.
  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carcinoma, Pancreatic Ductal* / genetics
  • Carrier Proteins / metabolism*
  • Humans
  • Membrane Proteins / metabolism*
  • Methionine
  • Methionine Sulfoxide Reductases / chemistry
  • Methionine Sulfoxide Reductases / metabolism
  • Oxidation-Reduction
  • Pancreatic Neoplasms* / genetics
  • Pyruvate Kinase / metabolism
  • Thyroid Hormone-Binding Proteins
  • Thyroid Hormones / metabolism*

Substances

  • Carrier Proteins
  • Membrane Proteins
  • Thyroid Hormones
  • Methionine
  • Methionine Sulfoxide Reductases
  • Pyruvate Kinase