Cell Reports (Mar 2020)

FKBP10 Regulates Protein Translation to Sustain Lung Cancer Growth

  • Giorgio Ramadori,
  • Rafael M. Ioris,
  • Zoltan Villanyi,
  • Raquel Firnkes,
  • Olesya O. Panasenko,
  • George Allen,
  • Georgia Konstantinidou,
  • Ebru Aras,
  • Xavier Brenachot,
  • Tommasina Biscotti,
  • Anne Charollais,
  • Michele Luchetti,
  • Fedor Bezrukov,
  • Alfredo Santinelli,
  • Muntaha Samad,
  • Pierre Baldi,
  • Martine A. Collart,
  • Roberto Coppari

Journal volume & issue
Vol. 30, no. 11
pp. 3851 – 3863.e6

Abstract

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Summary: Cancer therapy is limited, in part, by lack of specificity. Thus, identifying molecules that are selectively expressed by, and relevant for, cancer cells is of paramount medical importance. Here, we show that peptidyl-prolyl-cis-trans-isomerase (PPIase) FK506-binding protein 10 (FKBP10)-positive cells are present in cancer lesions but absent in the healthy parenchyma of human lung. FKBP10 expression negatively correlates with survival of lung cancer patients, and its downregulation causes a dramatic diminution of lung tumor burden in mice. Mechanistically, our results from gain- and loss-of-function assays show that FKBP10 boosts cancer growth and stemness via its PPIase activity. Also, FKBP10 interacts with ribosomes, and its downregulation leads to reduction of translation elongation at the beginning of open reading frames (ORFs), particularly upon insertion of proline residues. Thus, our data unveil FKBP10 as a cancer-selective molecule with a key role in translational reprogramming, stem-like traits, and growth of lung cancer. : Ramadori et al. show that the peptidyl-prolyl-cis-trans-isomerase FKBP10 is selectively expressed in lung cancer cells, and its expression negatively correlates with patient survival. FKBP10 is associated with ribosomes and regulates translation elongation, in particular upon insertion of proline, hence supporting lung cancer growth and stem-like traits.