Nature Communications (Jul 2021)

Homozygous MTAP deletion in primary human glioblastoma is not associated with elevation of methylthioadenosine

  • Yasaman Barekatain,
  • Jeffrey J. Ackroyd,
  • Victoria C. Yan,
  • Sunada Khadka,
  • Lin Wang,
  • Ko-Chien Chen,
  • Anton H. Poral,
  • Theresa Tran,
  • Dimitra K. Georgiou,
  • Kenisha Arthur,
  • Yu-Hsi Lin,
  • Nikunj Satani,
  • Elliot S. Ballato,
  • Eliot I. Behr,
  • Ana C. deCarvalho,
  • Roel G. W. Verhaak,
  • John de Groot,
  • Jason T. Huse,
  • John M. Asara,
  • Raghu Kalluri,
  • Florian L. Muller

DOI
https://doi.org/10.1038/s41467-021-24240-3
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 13

Abstract

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The metabolite methylthioadenosine (MTA) inhibits PRMT5. Therefore, MTA accumulation due to MTA phosphorylase (MTAP) deletion has been proposed as a vulnerability for PRMT5-targeted therapy in cancer. Here, the authors show that MTA does not accumulate in MTAP-deficient cancer cells but is secreted and metabolized by MTAP-intact cells in the tumour microenvironment.